/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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 0.1.25-177f698 [2020-08-22 03:02:46,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:02:46,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:02:46,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:02:46,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:02:46,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:02:46,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:02:46,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:02:46,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:02:46,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:02:46,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:02:46,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:02:46,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:02:46,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:02:46,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:02:46,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:02:46,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:02:46,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:02:46,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:02:46,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:02:46,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:02:46,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:02:46,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:02:46,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:02:46,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:02:46,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:02:46,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:02:46,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:02:46,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:02:46,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:02:46,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:02:46,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:02:46,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:02:46,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:02:46,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:02:46,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:02:46,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:02:46,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:02:46,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:02:46,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:02:46,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:02:46,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 03:02:46,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:02:46,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:02:46,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:02:46,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:02:46,215 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:02:46,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:02:46,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:02:46,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:02:46,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:02:46,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:02:46,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:02:46,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:02:46,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:02:46,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:02:46,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:02:46,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:02:46,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:02:46,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:02:46,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:02:46,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:02:46,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:02:46,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:02:46,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:02:46,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:02:46,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:02:46,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:02:46,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:02:46,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:02:46,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:02:46,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 03:02:46,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:02:46,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:02:46,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:02:46,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:02:46,591 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:02:46,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 03:02:46,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4259577dd/118adc012f3949c2ae801d267fffdac5/FLAG51e82268f [2020-08-22 03:02:47,183 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:02:47,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 03:02:47,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4259577dd/118adc012f3949c2ae801d267fffdac5/FLAG51e82268f [2020-08-22 03:02:47,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4259577dd/118adc012f3949c2ae801d267fffdac5 [2020-08-22 03:02:47,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:02:47,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:02:47,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:02:47,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:02:47,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:02:47,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:02:47" (1/1) ... [2020-08-22 03:02:47,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcb8091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:47, skipping insertion in model container [2020-08-22 03:02:47,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:02:47" (1/1) ... [2020-08-22 03:02:47,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:02:47,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:02:47,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:02:47,841 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:02:48,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:02:48,036 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:02:48,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48 WrapperNode [2020-08-22 03:02:48,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:02:48,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:02:48,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:02:48,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:02:48,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... [2020-08-22 03:02:48,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... [2020-08-22 03:02:48,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... [2020-08-22 03:02:48,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... [2020-08-22 03:02:48,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... [2020-08-22 03:02:48,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... [2020-08-22 03:02:48,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... [2020-08-22 03:02:48,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:02:48,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:02:48,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:02:48,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:02:48,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:02:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:02:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:02:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-22 03:02:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:02:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:02:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 03:02:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:02:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 03:02:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 03:02:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-22 03:02:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:02:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:02:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:02:48,377 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:02:49,016 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-22 03:02:49,016 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-22 03:02:49,028 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:02:49,028 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 03:02:49,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:02:49 BoogieIcfgContainer [2020-08-22 03:02:49,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:02:49,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:02:49,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:02:49,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:02:49,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:02:47" (1/3) ... [2020-08-22 03:02:49,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3772a819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:02:49, skipping insertion in model container [2020-08-22 03:02:49,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:02:48" (2/3) ... [2020-08-22 03:02:49,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3772a819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:02:49, skipping insertion in model container [2020-08-22 03:02:49,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:02:49" (3/3) ... [2020-08-22 03:02:49,044 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-22 03:02:49,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:02:49,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:02:49,079 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:02:49,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:02:49,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:02:49,109 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:02:49,109 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:02:49,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:02:49,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:02:49,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:02:49,110 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:02:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 03:02:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 03:02:49,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:49,147 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] [2020-08-22 03:02:49,147 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:49,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-22 03:02:49,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:49,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364681904] [2020-08-22 03:02:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:49,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:49,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364681904] [2020-08-22 03:02:49,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:49,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:49,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167542709] [2020-08-22 03:02:49,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:49,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:49,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:49,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:49,525 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-22 03:02:49,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:49,961 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-22 03:02:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:49,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-22 03:02:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:49,979 INFO L225 Difference]: With dead ends: 362 [2020-08-22 03:02:49,979 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 03:02:49,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 03:02:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-22 03:02:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 03:02:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-22 03:02:50,049 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-22 03:02:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:50,049 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-22 03:02:50,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-22 03:02:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 03:02:50,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:50,052 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] [2020-08-22 03:02:50,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:02:50,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:50,053 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-22 03:02:50,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:50,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72644306] [2020-08-22 03:02:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:50,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72644306] [2020-08-22 03:02:50,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:50,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:50,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424750874] [2020-08-22 03:02:50,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:50,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:50,173 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-22 03:02:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:50,521 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-22 03:02:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:50,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 03:02:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:50,526 INFO L225 Difference]: With dead ends: 363 [2020-08-22 03:02:50,526 INFO L226 Difference]: Without dead ends: 199 [2020-08-22 03:02:50,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-22 03:02:50,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-22 03:02:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-22 03:02:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-22 03:02:50,576 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-22 03:02:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:50,576 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-22 03:02:50,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-22 03:02:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 03:02:50,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:50,578 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] [2020-08-22 03:02:50,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:02:50,579 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:50,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-22 03:02:50,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:50,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794638967] [2020-08-22 03:02:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:50,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794638967] [2020-08-22 03:02:50,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:50,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:50,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122980803] [2020-08-22 03:02:50,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:50,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:50,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:50,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:50,661 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-22 03:02:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:50,896 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-22 03:02:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:50,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 03:02:50,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:50,899 INFO L225 Difference]: With dead ends: 393 [2020-08-22 03:02:50,900 INFO L226 Difference]: Without dead ends: 207 [2020-08-22 03:02:50,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-22 03:02:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-22 03:02:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 03:02:50,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-22 03:02:50,920 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-22 03:02:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:50,921 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-22 03:02:50,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-22 03:02:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 03:02:50,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:50,923 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] [2020-08-22 03:02:50,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:02:50,924 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:50,924 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-22 03:02:50,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:50,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994799279] [2020-08-22 03:02:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:51,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994799279] [2020-08-22 03:02:51,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:51,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:51,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157412712] [2020-08-22 03:02:51,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:51,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:51,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:51,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:51,014 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-22 03:02:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:51,233 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-22 03:02:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:51,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 03:02:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:51,237 INFO L225 Difference]: With dead ends: 398 [2020-08-22 03:02:51,238 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 03:02:51,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 03:02:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 03:02:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:02:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-22 03:02:51,269 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-22 03:02:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:51,273 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-22 03:02:51,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-22 03:02:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 03:02:51,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:51,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:51,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:02:51,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-22 03:02:51,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:51,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437570951] [2020-08-22 03:02:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:51,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437570951] [2020-08-22 03:02:51,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:51,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:51,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503178271] [2020-08-22 03:02:51,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:51,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:51,356 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-22 03:02:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:51,546 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-22 03:02:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:51,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-22 03:02:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:51,549 INFO L225 Difference]: With dead ends: 409 [2020-08-22 03:02:51,549 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 03:02:51,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 03:02:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 03:02:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:02:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-22 03:02:51,564 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-22 03:02:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:51,564 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-22 03:02:51,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-22 03:02:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 03:02:51,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:51,566 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] [2020-08-22 03:02:51,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:02:51,567 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-22 03:02:51,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:51,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855832265] [2020-08-22 03:02:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:51,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855832265] [2020-08-22 03:02:51,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:51,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:51,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519230174] [2020-08-22 03:02:51,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:51,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:51,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:51,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:51,637 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-22 03:02:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:51,819 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-22 03:02:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:51,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-22 03:02:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:51,822 INFO L225 Difference]: With dead ends: 409 [2020-08-22 03:02:51,822 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 03:02:51,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 03:02:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 03:02:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:02:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-22 03:02:51,834 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-22 03:02:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:51,834 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-22 03:02:51,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-22 03:02:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 03:02:51,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:51,836 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] [2020-08-22 03:02:51,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:02:51,836 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:51,837 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-22 03:02:51,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:51,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156051320] [2020-08-22 03:02:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:51,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156051320] [2020-08-22 03:02:51,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:51,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:51,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091864870] [2020-08-22 03:02:51,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:51,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:51,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:51,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:51,905 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-22 03:02:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:52,100 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-22 03:02:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:52,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 03:02:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:52,102 INFO L225 Difference]: With dead ends: 409 [2020-08-22 03:02:52,102 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 03:02:52,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 03:02:52,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 03:02:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:02:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-22 03:02:52,116 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-22 03:02:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:52,117 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-22 03:02:52,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-22 03:02:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 03:02:52,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:52,120 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] [2020-08-22 03:02:52,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:02:52,121 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-22 03:02:52,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:52,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018555530] [2020-08-22 03:02:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:52,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018555530] [2020-08-22 03:02:52,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:52,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:02:52,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895996299] [2020-08-22 03:02:52,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:02:52,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:52,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:02:52,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:52,227 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-22 03:02:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:52,582 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-22 03:02:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 03:02:52,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-22 03:02:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:52,585 INFO L225 Difference]: With dead ends: 605 [2020-08-22 03:02:52,585 INFO L226 Difference]: Without dead ends: 412 [2020-08-22 03:02:52,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:02:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-22 03:02:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-22 03:02:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-22 03:02:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-22 03:02:52,638 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-22 03:02:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:52,638 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-22 03:02:52,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:02:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-22 03:02:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 03:02:52,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:52,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:52,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:02:52,640 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-22 03:02:52,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:52,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351317387] [2020-08-22 03:02:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:52,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351317387] [2020-08-22 03:02:52,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:52,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:52,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580768703] [2020-08-22 03:02:52,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:52,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:52,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:52,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:52,698 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-22 03:02:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:52,944 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-22 03:02:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:52,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-22 03:02:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:52,948 INFO L225 Difference]: With dead ends: 847 [2020-08-22 03:02:52,948 INFO L226 Difference]: Without dead ends: 472 [2020-08-22 03:02:52,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-22 03:02:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-22 03:02:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-22 03:02:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-22 03:02:52,975 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-22 03:02:52,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:52,975 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-22 03:02:52,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:52,975 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-22 03:02:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 03:02:52,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:52,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:52,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:02:52,977 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-22 03:02:52,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:52,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207866377] [2020-08-22 03:02:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:53,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207866377] [2020-08-22 03:02:53,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:53,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:53,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990099329] [2020-08-22 03:02:53,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:53,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:53,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:53,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:53,042 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-22 03:02:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:53,301 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-22 03:02:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:53,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-22 03:02:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:53,306 INFO L225 Difference]: With dead ends: 936 [2020-08-22 03:02:53,306 INFO L226 Difference]: Without dead ends: 495 [2020-08-22 03:02:53,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-22 03:02:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-22 03:02:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-22 03:02:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-22 03:02:53,342 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-22 03:02:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:53,343 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-22 03:02:53,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-22 03:02:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 03:02:53,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:53,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:53,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:02:53,346 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-22 03:02:53,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:53,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934335371] [2020-08-22 03:02:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:53,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 03:02:53,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934335371] [2020-08-22 03:02:53,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:53,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:53,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520843983] [2020-08-22 03:02:53,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:53,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:53,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:53,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:53,430 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-22 03:02:53,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:53,700 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-22 03:02:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:53,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-22 03:02:53,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:53,706 INFO L225 Difference]: With dead ends: 993 [2020-08-22 03:02:53,706 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 03:02:53,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 03:02:53,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 03:02:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 03:02:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-22 03:02:53,734 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-22 03:02:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:53,734 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-22 03:02:53,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-22 03:02:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 03:02:53,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:53,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:53,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:02:53,736 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:53,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:53,737 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-22 03:02:53,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:53,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220371255] [2020-08-22 03:02:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:53,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 03:02:53,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220371255] [2020-08-22 03:02:53,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:53,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:53,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994615346] [2020-08-22 03:02:53,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:53,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:53,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:53,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:53,802 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-22 03:02:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:54,025 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-22 03:02:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:54,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 03:02:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:54,029 INFO L225 Difference]: With dead ends: 1027 [2020-08-22 03:02:54,029 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 03:02:54,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 03:02:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 03:02:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 03:02:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-22 03:02:54,057 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-22 03:02:54,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:54,057 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-22 03:02:54,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-22 03:02:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 03:02:54,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:54,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:54,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 03:02:54,059 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-22 03:02:54,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:54,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074367898] [2020-08-22 03:02:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 03:02:54,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074367898] [2020-08-22 03:02:54,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:54,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:54,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430574929] [2020-08-22 03:02:54,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:54,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:54,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:54,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:54,123 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-22 03:02:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:54,381 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-22 03:02:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:54,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 03:02:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:54,384 INFO L225 Difference]: With dead ends: 1074 [2020-08-22 03:02:54,385 INFO L226 Difference]: Without dead ends: 576 [2020-08-22 03:02:54,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-22 03:02:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-22 03:02:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-22 03:02:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-22 03:02:54,414 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-22 03:02:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:54,416 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-22 03:02:54,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-22 03:02:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 03:02:54,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:54,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 03:02:54,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 03:02:54,421 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:54,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-22 03:02:54,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:54,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747364282] [2020-08-22 03:02:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:54,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747364282] [2020-08-22 03:02:54,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:54,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:54,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577937644] [2020-08-22 03:02:54,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:54,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:54,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:54,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:54,480 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-22 03:02:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:54,724 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-22 03:02:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:54,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-22 03:02:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:54,728 INFO L225 Difference]: With dead ends: 1184 [2020-08-22 03:02:54,728 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 03:02:54,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 03:02:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 03:02:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 03:02:54,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-22 03:02:54,762 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-22 03:02:54,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:54,763 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-22 03:02:54,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-22 03:02:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 03:02:54,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:54,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 03:02:54,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 03:02:54,765 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:54,765 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-22 03:02:54,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:54,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353833323] [2020-08-22 03:02:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:02:54,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353833323] [2020-08-22 03:02:54,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:54,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:54,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690872613] [2020-08-22 03:02:54,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:54,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:54,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:54,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:54,810 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-22 03:02:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:55,048 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-22 03:02:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:55,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-22 03:02:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:55,053 INFO L225 Difference]: With dead ends: 1227 [2020-08-22 03:02:55,053 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 03:02:55,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 03:02:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 03:02:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 03:02:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-22 03:02:55,091 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-22 03:02:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:55,091 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-22 03:02:55,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-22 03:02:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 03:02:55,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:55,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 03:02:55,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 03:02:55,094 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:55,095 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-22 03:02:55,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:55,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349764997] [2020-08-22 03:02:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:55,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:02:55,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349764997] [2020-08-22 03:02:55,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:55,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:55,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135844787] [2020-08-22 03:02:55,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:55,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:55,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:55,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:55,187 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-22 03:02:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:55,402 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-22 03:02:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:55,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-22 03:02:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:55,406 INFO L225 Difference]: With dead ends: 1223 [2020-08-22 03:02:55,406 INFO L226 Difference]: Without dead ends: 619 [2020-08-22 03:02:55,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-22 03:02:55,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-22 03:02:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 03:02:55,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-22 03:02:55,436 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-22 03:02:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:55,437 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-22 03:02:55,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-22 03:02:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 03:02:55,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:55,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:55,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 03:02:55,439 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:55,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-22 03:02:55,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:55,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570861549] [2020-08-22 03:02:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 03:02:55,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570861549] [2020-08-22 03:02:55,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:55,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:55,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957431920] [2020-08-22 03:02:55,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:55,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:55,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:55,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:55,501 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-22 03:02:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:55,777 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-22 03:02:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:55,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-22 03:02:55,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:55,783 INFO L225 Difference]: With dead ends: 1281 [2020-08-22 03:02:55,783 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 03:02:55,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 03:02:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 03:02:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 03:02:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-22 03:02:55,846 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-22 03:02:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:55,846 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-22 03:02:55,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-22 03:02:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 03:02:55,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:55,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 03:02:55,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 03:02:55,849 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:55,850 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-22 03:02:55,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:55,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968939253] [2020-08-22 03:02:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:55,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 03:02:55,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968939253] [2020-08-22 03:02:55,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:55,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:55,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645820601] [2020-08-22 03:02:55,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:55,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:55,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:55,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:55,945 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-22 03:02:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:56,295 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-22 03:02:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:56,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-22 03:02:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:56,301 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 03:02:56,302 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 03:02:56,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 03:02:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 03:02:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 03:02:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-22 03:02:56,354 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-22 03:02:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:56,354 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-22 03:02:56,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-22 03:02:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-22 03:02:56,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:56,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 03:02:56,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 03:02:56,363 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-22 03:02:56,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:56,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264804575] [2020-08-22 03:02:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:02:56,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264804575] [2020-08-22 03:02:56,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:56,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:56,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606109056] [2020-08-22 03:02:56,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:56,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:56,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:56,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:56,466 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-22 03:02:56,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:56,814 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-22 03:02:56,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:56,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-22 03:02:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:56,820 INFO L225 Difference]: With dead ends: 1349 [2020-08-22 03:02:56,821 INFO L226 Difference]: Without dead ends: 713 [2020-08-22 03:02:56,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-22 03:02:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-22 03:02:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-22 03:02:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-22 03:02:56,871 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-22 03:02:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:56,871 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-22 03:02:56,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-22 03:02:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-22 03:02:56,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:56,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 03:02:56,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 03:02:56,874 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-22 03:02:56,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:56,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426682642] [2020-08-22 03:02:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:02:56,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426682642] [2020-08-22 03:02:56,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:56,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:56,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145145004] [2020-08-22 03:02:56,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:56,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:56,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:56,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:56,935 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-22 03:02:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:57,197 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-22 03:02:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:57,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-22 03:02:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:57,202 INFO L225 Difference]: With dead ends: 1406 [2020-08-22 03:02:57,202 INFO L226 Difference]: Without dead ends: 714 [2020-08-22 03:02:57,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-22 03:02:57,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-22 03:02:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 03:02:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-22 03:02:57,251 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-22 03:02:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:57,251 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-22 03:02:57,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-22 03:02:57,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 03:02:57,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:57,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:57,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 03:02:57,254 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:57,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:57,255 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-22 03:02:57,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:57,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761559837] [2020-08-22 03:02:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 03:02:57,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761559837] [2020-08-22 03:02:57,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:57,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:57,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984864612] [2020-08-22 03:02:57,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:57,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:57,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:57,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:57,348 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-22 03:02:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:57,605 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-22 03:02:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:57,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-22 03:02:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:57,610 INFO L225 Difference]: With dead ends: 1438 [2020-08-22 03:02:57,610 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 03:02:57,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 03:02:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 03:02:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 03:02:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-22 03:02:57,663 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-22 03:02:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:57,663 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-22 03:02:57,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:57,663 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-22 03:02:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-22 03:02:57,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:57,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:02:57,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 03:02:57,666 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-22 03:02:57,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:57,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356207582] [2020-08-22 03:02:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:57,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 03:02:57,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356207582] [2020-08-22 03:02:57,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:57,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:57,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562373155] [2020-08-22 03:02:57,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:57,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:57,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:57,761 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-22 03:02:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:58,058 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-22 03:02:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:58,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-22 03:02:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:58,065 INFO L225 Difference]: With dead ends: 1479 [2020-08-22 03:02:58,065 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 03:02:58,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 03:02:58,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 03:02:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 03:02:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-22 03:02:58,114 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-22 03:02:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:58,114 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-22 03:02:58,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-22 03:02:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 03:02:58,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:58,119 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-22 03:02:58,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 03:02:58,119 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:58,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-22 03:02:58,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:58,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85087341] [2020-08-22 03:02:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 03:02:58,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85087341] [2020-08-22 03:02:58,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:58,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:58,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215231522] [2020-08-22 03:02:58,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:58,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:58,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:58,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:58,189 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-22 03:02:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:58,437 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-22 03:02:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:58,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-22 03:02:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:58,443 INFO L225 Difference]: With dead ends: 1515 [2020-08-22 03:02:58,443 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 03:02:58,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 03:02:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 03:02:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 03:02:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-22 03:02:58,486 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-22 03:02:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:58,486 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-22 03:02:58,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-22 03:02:58,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 03:02:58,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:58,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-22 03:02:58,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 03:02:58,490 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:58,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-22 03:02:58,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:58,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168476399] [2020-08-22 03:02:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:58,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 03:02:58,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168476399] [2020-08-22 03:02:58,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:58,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:58,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529896161] [2020-08-22 03:02:58,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:58,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:58,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:58,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:58,585 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-22 03:02:58,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:58,836 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-22 03:02:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:58,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-22 03:02:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:58,841 INFO L225 Difference]: With dead ends: 1547 [2020-08-22 03:02:58,841 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 03:02:58,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 03:02:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 03:02:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 03:02:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-22 03:02:58,886 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-22 03:02:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:58,887 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-22 03:02:58,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-22 03:02:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 03:02:58,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:58,890 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-08-22 03:02:58,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 03:02:58,890 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-22 03:02:58,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:58,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269704987] [2020-08-22 03:02:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-22 03:02:58,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269704987] [2020-08-22 03:02:58,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:58,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:58,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595208277] [2020-08-22 03:02:58,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:58,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:58,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:58,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:58,978 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-22 03:02:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:59,221 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-22 03:02:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:59,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-22 03:02:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:59,226 INFO L225 Difference]: With dead ends: 1573 [2020-08-22 03:02:59,226 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 03:02:59,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 03:02:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 03:02:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 03:02:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-22 03:02:59,279 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-22 03:02:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:59,279 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-22 03:02:59,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-22 03:02:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 03:02:59,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:59,283 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-08-22 03:02:59,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 03:02:59,283 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:59,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:59,284 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-22 03:02:59,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:59,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360052912] [2020-08-22 03:02:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-22 03:02:59,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360052912] [2020-08-22 03:02:59,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:59,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:59,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562528733] [2020-08-22 03:02:59,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:59,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:59,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:59,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:59,368 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-22 03:02:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:59,603 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-22 03:02:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:59,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-22 03:02:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:59,608 INFO L225 Difference]: With dead ends: 1601 [2020-08-22 03:02:59,608 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 03:02:59,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 03:02:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 03:02:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 03:02:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-22 03:02:59,654 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-22 03:02:59,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:02:59,654 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-22 03:02:59,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:02:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-22 03:02:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 03:02:59,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:02:59,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 03:02:59,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 03:02:59,657 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:02:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:02:59,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-22 03:02:59,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:02:59,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996798135] [2020-08-22 03:02:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:02:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:02:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:02:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 03:02:59,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996798135] [2020-08-22 03:02:59,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:02:59,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:02:59,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111543693] [2020-08-22 03:02:59,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:02:59,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:02:59,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:02:59,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:02:59,719 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-22 03:02:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:02:59,975 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-22 03:02:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:02:59,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 03:02:59,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:02:59,980 INFO L225 Difference]: With dead ends: 1656 [2020-08-22 03:02:59,981 INFO L226 Difference]: Without dead ends: 866 [2020-08-22 03:02:59,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:02:59,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-22 03:03:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-22 03:03:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-22 03:03:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-22 03:03:00,030 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-22 03:03:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:00,030 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-22 03:03:00,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:03:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-22 03:03:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 03:03:00,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:00,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 03:03:00,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 03:03:00,034 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-22 03:03:00,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:00,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284078694] [2020-08-22 03:03:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:00,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 03:03:00,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284078694] [2020-08-22 03:03:00,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:00,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:03:00,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388276476] [2020-08-22 03:03:00,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:03:00,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:00,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:03:00,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:03:00,091 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-22 03:03:00,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:00,374 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-22 03:03:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:03:00,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-22 03:03:00,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:00,379 INFO L225 Difference]: With dead ends: 1705 [2020-08-22 03:03:00,379 INFO L226 Difference]: Without dead ends: 850 [2020-08-22 03:03:00,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:03:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-22 03:03:00,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-22 03:03:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 03:03:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-22 03:03:00,424 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-22 03:03:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:00,424 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-22 03:03:00,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:03:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-22 03:03:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 03:03:00,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:00,427 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:03:00,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 03:03:00,427 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:00,427 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-22 03:03:00,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:00,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966067420] [2020-08-22 03:03:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-22 03:03:00,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966067420] [2020-08-22 03:03:00,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:00,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:03:00,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708187675] [2020-08-22 03:03:00,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:03:00,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:00,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:03:00,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:03:00,488 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-22 03:03:00,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:00,739 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-22 03:03:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:03:00,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-22 03:03:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:00,744 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 03:03:00,744 INFO L226 Difference]: Without dead ends: 848 [2020-08-22 03:03:00,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:03:00,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-22 03:03:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-22 03:03:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 03:03:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-22 03:03:00,791 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-22 03:03:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:00,791 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-22 03:03:00,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:03:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-22 03:03:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 03:03:00,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:00,794 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-22 03:03:00,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 03:03:00,794 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-22 03:03:00,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:00,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170093473] [2020-08-22 03:03:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:00,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-22 03:03:00,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170093473] [2020-08-22 03:03:00,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:00,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:03:00,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964247797] [2020-08-22 03:03:00,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:03:00,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:03:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:03:00,868 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-22 03:03:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:01,155 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-22 03:03:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:03:01,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 03:03:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:01,160 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 03:03:01,161 INFO L226 Difference]: Without dead ends: 831 [2020-08-22 03:03:01,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:03:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-22 03:03:01,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-22 03:03:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-22 03:03:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-22 03:03:01,217 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-22 03:03:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:01,217 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-22 03:03:01,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:03:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-22 03:03:01,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 03:03:01,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:01,220 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] [2020-08-22 03:03:01,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 03:03:01,221 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:01,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-22 03:03:01,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:01,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166814174] [2020-08-22 03:03:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-22 03:03:01,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166814174] [2020-08-22 03:03:01,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:01,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:03:01,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773381369] [2020-08-22 03:03:01,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:03:01,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:01,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:03:01,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:01,300 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-22 03:03:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:01,384 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-22 03:03:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:03:01,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 03:03:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:01,392 INFO L225 Difference]: With dead ends: 2417 [2020-08-22 03:03:01,392 INFO L226 Difference]: Without dead ends: 1611 [2020-08-22 03:03:01,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-22 03:03:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-22 03:03:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-22 03:03:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-22 03:03:01,470 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-22 03:03:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:01,471 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-22 03:03:01,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:03:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-22 03:03:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 03:03:01,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:01,475 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] [2020-08-22 03:03:01,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 03:03:01,475 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:01,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:01,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-22 03:03:01,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:01,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862644339] [2020-08-22 03:03:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-22 03:03:01,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862644339] [2020-08-22 03:03:01,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:01,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:03:01,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689885842] [2020-08-22 03:03:01,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:03:01,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:01,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:03:01,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:01,589 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-22 03:03:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:01,715 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-22 03:03:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:03:01,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 03:03:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:01,723 INFO L225 Difference]: With dead ends: 2416 [2020-08-22 03:03:01,723 INFO L226 Difference]: Without dead ends: 1608 [2020-08-22 03:03:01,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-22 03:03:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-22 03:03:01,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 03:03:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-22 03:03:01,824 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-22 03:03:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:01,825 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-22 03:03:01,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:03:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-22 03:03:01,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 03:03:01,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:01,828 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] [2020-08-22 03:03:01,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 03:03:01,828 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:01,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-22 03:03:01,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:01,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361468112] [2020-08-22 03:03:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:01,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-22 03:03:01,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361468112] [2020-08-22 03:03:01,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:01,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:03:01,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287316688] [2020-08-22 03:03:01,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:03:01,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:03:01,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:01,984 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-22 03:03:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:02,275 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-22 03:03:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:03:02,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-22 03:03:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:02,293 INFO L225 Difference]: With dead ends: 4752 [2020-08-22 03:03:02,293 INFO L226 Difference]: Without dead ends: 3159 [2020-08-22 03:03:02,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-22 03:03:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-22 03:03:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 03:03:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-22 03:03:02,429 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-22 03:03:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:02,429 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-22 03:03:02,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:03:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-22 03:03:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 03:03:02,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:02,432 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] [2020-08-22 03:03:02,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 03:03:02,432 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-22 03:03:02,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:02,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785698273] [2020-08-22 03:03:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-22 03:03:02,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785698273] [2020-08-22 03:03:02,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:02,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:03:02,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654279213] [2020-08-22 03:03:02,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:03:02,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:03:02,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:02,525 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-22 03:03:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:02,843 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-22 03:03:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:03:02,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-22 03:03:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:02,867 INFO L225 Difference]: With dead ends: 4792 [2020-08-22 03:03:02,867 INFO L226 Difference]: Without dead ends: 3199 [2020-08-22 03:03:02,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:03:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-22 03:03:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-22 03:03:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-22 03:03:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-22 03:03:03,109 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-22 03:03:03,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:03,109 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-22 03:03:03,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:03:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-22 03:03:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 03:03:03,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:03,113 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] [2020-08-22 03:03:03,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 03:03:03,113 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:03,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:03,114 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-22 03:03:03,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:03,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243214315] [2020-08-22 03:03:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:03:03,159 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:03:03,159 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:03:03,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 03:03:03,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:03:03 BoogieIcfgContainer [2020-08-22 03:03:03,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:03:03,200 INFO L168 Benchmark]: Toolchain (without parser) took 15690.32 ms. Allocated memory was 146.8 MB in the beginning and 486.5 MB in the end (delta: 339.7 MB). Free memory was 102.5 MB in the beginning and 353.7 MB in the end (delta: -251.2 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:03:03,200 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:03:03,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.62 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.3 MB in the beginning and 176.8 MB in the end (delta: -74.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:03:03,201 INFO L168 Benchmark]: Boogie Preprocessor took 64.58 ms. Allocated memory is still 202.4 MB. Free memory was 176.8 MB in the beginning and 174.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:03:03,201 INFO L168 Benchmark]: RCFGBuilder took 932.11 ms. Allocated memory is still 202.4 MB. Free memory was 174.1 MB in the beginning and 116.0 MB in the end (delta: 58.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:03:03,202 INFO L168 Benchmark]: TraceAbstraction took 14161.77 ms. Allocated memory was 202.4 MB in the beginning and 486.5 MB in the end (delta: 284.2 MB). Free memory was 115.3 MB in the beginning and 353.7 MB in the end (delta: -238.4 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:03:03,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 526.62 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.3 MB in the beginning and 176.8 MB in the end (delta: -74.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.58 ms. Allocated memory is still 202.4 MB. Free memory was 176.8 MB in the beginning and 174.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 932.11 ms. Allocated memory is still 202.4 MB. Free memory was 174.1 MB in the beginning and 116.0 MB in the end (delta: 58.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14161.77 ms. Allocated memory was 202.4 MB in the beginning and 486.5 MB in the end (delta: 284.2 MB). Free memory was 115.3 MB in the beginning and 353.7 MB in the end (delta: -238.4 MB). Peak memory consumption was 45.8 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: 14.0s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7259 SDtfs, 16112 SDslu, 7753 SDs, 0 SdLazy, 4949 SolverSat, 1408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 3391 NumberOfCodeBlocks, 3391 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3195 ConstructedInterpolants, 0 QuantifiedInterpolants, 632376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 2752/2752 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...