/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:47:56,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:47:56,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:47:56,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:47:56,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:47:56,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:47:56,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:47:56,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:47:56,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:47:56,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:47:56,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:47:56,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:47:56,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:47:56,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:47:56,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:47:56,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:47:56,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:47:56,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:47:56,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:47:56,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:47:56,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:47:56,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:47:56,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:47:56,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:47:56,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:47:56,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:47:56,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:47:56,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:47:56,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:47:56,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:47:56,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:47:56,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:47:56,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:47:56,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:47:56,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:47:56,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:47:56,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:47:56,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:47:56,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:47:56,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:47:56,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:47:56,426 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 [2020-08-21 23:47:56,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:47:56,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:47:56,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:47:56,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:47:56,468 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:47:56,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:47:56,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:47:56,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:47:56,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:47:56,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:47:56,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:47:56,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:47:56,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:47:56,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:47:56,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:47:56,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:47:56,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:47:56,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:47:56,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:47:56,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:47:56,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:47:56,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:47:56,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:47:56,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:47:56,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:47:56,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:47:56,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:47:56,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:47:56,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:47:56,475 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:47:56,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:47:56,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:47:56,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:47:56,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:47:56,784 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:47:56,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 23:47:56,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/069e94274/4cf1048fe0504e3ca0f4bbb811057475/FLAG49045fe0f [2020-08-21 23:47:57,351 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:47:57,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 23:47:57,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/069e94274/4cf1048fe0504e3ca0f4bbb811057475/FLAG49045fe0f [2020-08-21 23:47:57,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/069e94274/4cf1048fe0504e3ca0f4bbb811057475 [2020-08-21 23:47:57,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:47:57,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:47:57,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:47:57,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:47:57,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:47:57,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:47:57" (1/1) ... [2020-08-21 23:47:57,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc86df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:57, skipping insertion in model container [2020-08-21 23:47:57,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:47:57" (1/1) ... [2020-08-21 23:47:57,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:47:57,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:47:58,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:47:58,228 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:47:58,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:47:58,317 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:47:58,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58 WrapperNode [2020-08-21 23:47:58,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:47:58,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:47:58,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:47:58,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:47:58,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... [2020-08-21 23:47:58,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... [2020-08-21 23:47:58,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... [2020-08-21 23:47:58,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... [2020-08-21 23:47:58,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... [2020-08-21 23:47:58,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... [2020-08-21 23:47:58,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... [2020-08-21 23:47:58,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:47:58,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:47:58,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:47:58,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:47:58,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:47:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:47:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:47:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-21 23:47:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:47:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:47:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 23:47:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:47:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-21 23:47:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 23:47:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-21 23:47:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:47:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:47:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:47:58,670 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-21 23:47:59,299 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-21 23:47:59,300 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-21 23:47:59,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:47:59,312 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 23:47:59,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:47:59 BoogieIcfgContainer [2020-08-21 23:47:59,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:47:59,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:47:59,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:47:59,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:47:59,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:47:57" (1/3) ... [2020-08-21 23:47:59,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6556b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:47:59, skipping insertion in model container [2020-08-21 23:47:59,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:47:58" (2/3) ... [2020-08-21 23:47:59,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6556b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:47:59, skipping insertion in model container [2020-08-21 23:47:59,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:47:59" (3/3) ... [2020-08-21 23:47:59,328 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-21 23:47:59,340 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:47:59,349 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:47:59,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:47:59,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:47:59,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:47:59,394 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:47:59,394 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:47:59,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:47:59,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:47:59,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:47:59,395 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:47:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 23:47:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 23:47:59,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:47:59,429 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] [2020-08-21 23:47:59,429 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:47:59,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:47:59,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-21 23:47:59,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:47:59,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372363893] [2020-08-21 23:47:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:47:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:47:59,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:47:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:47:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:47:59,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372363893] [2020-08-21 23:47:59,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:47:59,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:47:59,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763681314] [2020-08-21 23:47:59,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:47:59,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:47:59,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:47:59,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:47:59,808 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-21 23:48:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:00,265 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-21 23:48:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:00,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-21 23:48:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:00,282 INFO L225 Difference]: With dead ends: 362 [2020-08-21 23:48:00,282 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 23:48:00,287 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 [2020-08-21 23:48:00,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 23:48:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-21 23:48:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-21 23:48:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-21 23:48:00,359 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-21 23:48:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:00,365 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-21 23:48:00,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-21 23:48:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 23:48:00,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:00,370 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] [2020-08-21 23:48:00,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:48:00,370 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-21 23:48:00,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:00,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335251942] [2020-08-21 23:48:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:00,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:00,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335251942] [2020-08-21 23:48:00,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:00,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:00,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437617371] [2020-08-21 23:48:00,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:00,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:00,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:00,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:00,512 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-21 23:48:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:00,732 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-21 23:48:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:00,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 23:48:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:00,735 INFO L225 Difference]: With dead ends: 363 [2020-08-21 23:48:00,735 INFO L226 Difference]: Without dead ends: 199 [2020-08-21 23:48:00,737 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 [2020-08-21 23:48:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-21 23:48:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-21 23:48:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-21 23:48:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-21 23:48:00,756 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-21 23:48:00,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:00,756 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-21 23:48:00,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-21 23:48:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 23:48:00,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:00,761 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] [2020-08-21 23:48:00,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:48:00,762 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:00,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:00,762 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-21 23:48:00,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:00,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21222179] [2020-08-21 23:48:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:00,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:00,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21222179] [2020-08-21 23:48:00,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:00,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:00,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947397869] [2020-08-21 23:48:00,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:00,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:00,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:00,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:00,904 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-21 23:48:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:01,168 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-21 23:48:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:01,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 23:48:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:01,173 INFO L225 Difference]: With dead ends: 393 [2020-08-21 23:48:01,173 INFO L226 Difference]: Without dead ends: 207 [2020-08-21 23:48:01,176 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 [2020-08-21 23:48:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-21 23:48:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-21 23:48:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-21 23:48:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-21 23:48:01,210 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-21 23:48:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:01,211 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-21 23:48:01,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-21 23:48:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 23:48:01,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:01,214 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] [2020-08-21 23:48:01,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:48:01,215 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:01,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:01,215 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-21 23:48:01,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:01,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138889225] [2020-08-21 23:48:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:01,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138889225] [2020-08-21 23:48:01,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:01,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:01,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961201986] [2020-08-21 23:48:01,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:01,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:01,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:01,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:01,292 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-21 23:48:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:01,506 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-21 23:48:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:01,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 23:48:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:01,509 INFO L225 Difference]: With dead ends: 398 [2020-08-21 23:48:01,510 INFO L226 Difference]: Without dead ends: 206 [2020-08-21 23:48:01,511 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 [2020-08-21 23:48:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-21 23:48:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-21 23:48:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 23:48:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-21 23:48:01,539 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-21 23:48:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:01,539 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-21 23:48:01,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-21 23:48:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 23:48:01,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:01,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:48:01,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:48:01,545 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-21 23:48:01,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:01,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611031230] [2020-08-21 23:48:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:01,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611031230] [2020-08-21 23:48:01,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:01,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:01,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525518213] [2020-08-21 23:48:01,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:01,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:01,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:01,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:01,604 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-21 23:48:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:01,794 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-21 23:48:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:01,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-21 23:48:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:01,797 INFO L225 Difference]: With dead ends: 409 [2020-08-21 23:48:01,797 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 23:48:01,798 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 [2020-08-21 23:48:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 23:48:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 23:48:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 23:48:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-21 23:48:01,811 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-21 23:48:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:01,811 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-21 23:48:01,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-21 23:48:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 23:48:01,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:01,813 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] [2020-08-21 23:48:01,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:48:01,814 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:01,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:01,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-21 23:48:01,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:01,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350817941] [2020-08-21 23:48:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:01,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:01,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350817941] [2020-08-21 23:48:01,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:01,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:01,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785365031] [2020-08-21 23:48:01,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:01,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:01,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:01,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:01,880 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-21 23:48:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:02,079 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-21 23:48:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:02,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-21 23:48:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:02,082 INFO L225 Difference]: With dead ends: 409 [2020-08-21 23:48:02,082 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 23:48:02,083 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 [2020-08-21 23:48:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 23:48:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 23:48:02,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 23:48:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-21 23:48:02,103 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-21 23:48:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:02,104 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-21 23:48:02,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-21 23:48:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 23:48:02,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:02,107 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] [2020-08-21 23:48:02,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:48:02,108 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:02,108 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-21 23:48:02,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:02,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754936452] [2020-08-21 23:48:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:02,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754936452] [2020-08-21 23:48:02,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:02,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:02,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769589363] [2020-08-21 23:48:02,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:02,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:02,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:02,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:02,175 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-21 23:48:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:02,352 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-21 23:48:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:02,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-21 23:48:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:02,354 INFO L225 Difference]: With dead ends: 409 [2020-08-21 23:48:02,354 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 23:48:02,355 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 [2020-08-21 23:48:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 23:48:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 23:48:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 23:48:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-21 23:48:02,368 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-21 23:48:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:02,368 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-21 23:48:02,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-21 23:48:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 23:48:02,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:02,369 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] [2020-08-21 23:48:02,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:48:02,370 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-21 23:48:02,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:02,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803990819] [2020-08-21 23:48:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:02,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:02,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803990819] [2020-08-21 23:48:02,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:02,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:48:02,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756825003] [2020-08-21 23:48:02,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:48:02,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:02,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:48:02,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:48:02,458 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-21 23:48:02,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:02,819 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-21 23:48:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:48:02,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-21 23:48:02,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:02,824 INFO L225 Difference]: With dead ends: 605 [2020-08-21 23:48:02,824 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 23:48:02,825 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 [2020-08-21 23:48:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 23:48:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-21 23:48:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-21 23:48:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-21 23:48:02,857 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-21 23:48:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:02,857 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-21 23:48:02,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:48:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-21 23:48:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 23:48:02,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:02,860 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] [2020-08-21 23:48:02,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:48:02,861 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-21 23:48:02,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:02,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260446033] [2020-08-21 23:48:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:02,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260446033] [2020-08-21 23:48:02,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:02,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:02,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620845991] [2020-08-21 23:48:02,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:02,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:02,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:02,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:02,983 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-21 23:48:03,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:03,325 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-21 23:48:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:03,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-21 23:48:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:03,333 INFO L225 Difference]: With dead ends: 847 [2020-08-21 23:48:03,334 INFO L226 Difference]: Without dead ends: 472 [2020-08-21 23:48:03,336 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 [2020-08-21 23:48:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-21 23:48:03,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-21 23:48:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-21 23:48:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-21 23:48:03,375 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-21 23:48:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:03,375 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-21 23:48:03,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-21 23:48:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-21 23:48:03,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:03,380 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] [2020-08-21 23:48:03,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:48:03,381 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:03,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-21 23:48:03,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:03,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870070284] [2020-08-21 23:48:03,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:03,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870070284] [2020-08-21 23:48:03,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:03,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:03,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810133857] [2020-08-21 23:48:03,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:03,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:03,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:03,501 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-21 23:48:03,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:03,824 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-21 23:48:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:03,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-21 23:48:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:03,829 INFO L225 Difference]: With dead ends: 936 [2020-08-21 23:48:03,829 INFO L226 Difference]: Without dead ends: 495 [2020-08-21 23:48:03,831 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 [2020-08-21 23:48:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-21 23:48:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-21 23:48:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-21 23:48:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-21 23:48:03,860 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-21 23:48:03,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:03,861 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-21 23:48:03,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-21 23:48:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 23:48:03,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:03,863 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] [2020-08-21 23:48:03,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:48:03,863 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:03,864 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-21 23:48:03,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:03,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711919581] [2020-08-21 23:48:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 23:48:03,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711919581] [2020-08-21 23:48:03,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:03,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:03,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450759356] [2020-08-21 23:48:03,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:03,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:03,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:03,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:03,937 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-21 23:48:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:04,174 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-21 23:48:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:04,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-21 23:48:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:04,180 INFO L225 Difference]: With dead ends: 993 [2020-08-21 23:48:04,180 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 23:48:04,181 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 [2020-08-21 23:48:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 23:48:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 23:48:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 23:48:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-21 23:48:04,210 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-21 23:48:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:04,210 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-21 23:48:04,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-21 23:48:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 23:48:04,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:04,213 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] [2020-08-21 23:48:04,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:48:04,213 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:04,213 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-21 23:48:04,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:04,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630822645] [2020-08-21 23:48:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:04,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 23:48:04,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630822645] [2020-08-21 23:48:04,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:04,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:04,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387066683] [2020-08-21 23:48:04,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:04,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:04,288 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-21 23:48:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:04,540 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-21 23:48:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:04,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 23:48:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:04,544 INFO L225 Difference]: With dead ends: 1027 [2020-08-21 23:48:04,545 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 23:48:04,546 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 [2020-08-21 23:48:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 23:48:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 23:48:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 23:48:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-21 23:48:04,580 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-21 23:48:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:04,580 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-21 23:48:04,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-21 23:48:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 23:48:04,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:04,582 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] [2020-08-21 23:48:04,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 23:48:04,582 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-21 23:48:04,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:04,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107271692] [2020-08-21 23:48:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 23:48:04,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107271692] [2020-08-21 23:48:04,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:04,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:04,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399984664] [2020-08-21 23:48:04,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:04,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:04,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:04,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:04,659 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-21 23:48:04,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:04,937 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-21 23:48:04,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:04,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 23:48:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:04,942 INFO L225 Difference]: With dead ends: 1074 [2020-08-21 23:48:04,942 INFO L226 Difference]: Without dead ends: 576 [2020-08-21 23:48:04,943 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 [2020-08-21 23:48:04,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-21 23:48:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-21 23:48:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-21 23:48:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-21 23:48:04,973 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-21 23:48:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:04,974 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-21 23:48:04,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-21 23:48:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 23:48:04,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:04,979 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] [2020-08-21 23:48:04,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 23:48:04,980 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-21 23:48:04,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:04,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375314076] [2020-08-21 23:48:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:05,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375314076] [2020-08-21 23:48:05,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:05,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:05,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654399678] [2020-08-21 23:48:05,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:05,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:05,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:05,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:05,045 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-21 23:48:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:05,293 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-21 23:48:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:05,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-21 23:48:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:05,297 INFO L225 Difference]: With dead ends: 1184 [2020-08-21 23:48:05,297 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 23:48:05,300 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 [2020-08-21 23:48:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 23:48:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 23:48:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 23:48:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-21 23:48:05,335 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-21 23:48:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:05,335 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-21 23:48:05,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-21 23:48:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-21 23:48:05,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:05,341 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] [2020-08-21 23:48:05,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 23:48:05,341 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-21 23:48:05,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:05,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389302099] [2020-08-21 23:48:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:48:05,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389302099] [2020-08-21 23:48:05,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:05,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:05,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171334393] [2020-08-21 23:48:05,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:05,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:05,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:05,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:05,448 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-21 23:48:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:05,724 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-21 23:48:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:05,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-21 23:48:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:05,728 INFO L225 Difference]: With dead ends: 1227 [2020-08-21 23:48:05,729 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 23:48:05,732 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 [2020-08-21 23:48:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 23:48:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 23:48:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 23:48:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-21 23:48:05,762 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-21 23:48:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:05,762 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-21 23:48:05,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-21 23:48:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 23:48:05,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:05,764 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] [2020-08-21 23:48:05,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 23:48:05,765 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:05,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:05,765 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-21 23:48:05,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:05,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461289106] [2020-08-21 23:48:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:05,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 23:48:05,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461289106] [2020-08-21 23:48:05,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:05,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:05,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736122588] [2020-08-21 23:48:05,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:05,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:05,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:05,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:05,834 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-21 23:48:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:06,094 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-21 23:48:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:06,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-21 23:48:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:06,100 INFO L225 Difference]: With dead ends: 1223 [2020-08-21 23:48:06,100 INFO L226 Difference]: Without dead ends: 619 [2020-08-21 23:48:06,103 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 [2020-08-21 23:48:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-21 23:48:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-21 23:48:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 23:48:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-21 23:48:06,150 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-21 23:48:06,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:06,151 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-21 23:48:06,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-21 23:48:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 23:48:06,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:06,155 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] [2020-08-21 23:48:06,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 23:48:06,155 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-21 23:48:06,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:06,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702703154] [2020-08-21 23:48:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 23:48:06,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702703154] [2020-08-21 23:48:06,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:06,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:06,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126357660] [2020-08-21 23:48:06,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:06,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:06,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:06,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:06,245 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-21 23:48:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:06,577 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-21 23:48:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:06,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-21 23:48:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:06,582 INFO L225 Difference]: With dead ends: 1281 [2020-08-21 23:48:06,582 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 23:48:06,585 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 [2020-08-21 23:48:06,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 23:48:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 23:48:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 23:48:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-21 23:48:06,646 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-21 23:48:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:06,646 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-21 23:48:06,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-21 23:48:06,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 23:48:06,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:06,650 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] [2020-08-21 23:48:06,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 23:48:06,651 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:06,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:06,651 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-21 23:48:06,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:06,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174090002] [2020-08-21 23:48:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:06,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 23:48:06,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174090002] [2020-08-21 23:48:06,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:06,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:06,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528847985] [2020-08-21 23:48:06,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:06,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:06,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:06,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:06,749 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-21 23:48:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:07,007 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-21 23:48:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:07,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-21 23:48:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:07,012 INFO L225 Difference]: With dead ends: 1313 [2020-08-21 23:48:07,012 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 23:48:07,014 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 [2020-08-21 23:48:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 23:48:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 23:48:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 23:48:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-21 23:48:07,053 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-21 23:48:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:07,053 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-21 23:48:07,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-21 23:48:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 23:48:07,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:07,058 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] [2020-08-21 23:48:07,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 23:48:07,058 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-21 23:48:07,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:07,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912458767] [2020-08-21 23:48:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 23:48:07,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912458767] [2020-08-21 23:48:07,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:07,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:07,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634262517] [2020-08-21 23:48:07,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:07,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:07,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:07,122 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-21 23:48:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:07,451 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-21 23:48:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:07,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-21 23:48:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:07,456 INFO L225 Difference]: With dead ends: 1349 [2020-08-21 23:48:07,456 INFO L226 Difference]: Without dead ends: 713 [2020-08-21 23:48:07,459 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 [2020-08-21 23:48:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-21 23:48:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-21 23:48:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-21 23:48:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-21 23:48:07,543 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-21 23:48:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:07,543 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-21 23:48:07,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-21 23:48:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 23:48:07,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:07,545 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] [2020-08-21 23:48:07,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 23:48:07,546 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-21 23:48:07,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:07,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053470873] [2020-08-21 23:48:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:07,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 23:48:07,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053470873] [2020-08-21 23:48:07,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:07,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:07,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910582085] [2020-08-21 23:48:07,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:07,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:07,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:07,614 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-21 23:48:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:07,886 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-21 23:48:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:07,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-21 23:48:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:07,891 INFO L225 Difference]: With dead ends: 1406 [2020-08-21 23:48:07,891 INFO L226 Difference]: Without dead ends: 714 [2020-08-21 23:48:07,893 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 [2020-08-21 23:48:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-21 23:48:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-21 23:48:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 23:48:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-21 23:48:07,932 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-21 23:48:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:07,933 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-21 23:48:07,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-21 23:48:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 23:48:07,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:07,935 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] [2020-08-21 23:48:07,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 23:48:07,936 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:07,936 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-21 23:48:07,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:07,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525557070] [2020-08-21 23:48:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:08,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 23:48:08,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525557070] [2020-08-21 23:48:08,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:08,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:08,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318092789] [2020-08-21 23:48:08,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:08,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:08,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:08,031 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-21 23:48:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:08,327 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-21 23:48:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:08,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-21 23:48:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:08,332 INFO L225 Difference]: With dead ends: 1438 [2020-08-21 23:48:08,332 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 23:48:08,334 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 [2020-08-21 23:48:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 23:48:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 23:48:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 23:48:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-21 23:48:08,381 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-21 23:48:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:08,381 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-21 23:48:08,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-21 23:48:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-21 23:48:08,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:08,384 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] [2020-08-21 23:48:08,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-21 23:48:08,384 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:08,384 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-21 23:48:08,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:08,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4650320] [2020-08-21 23:48:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:08,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 23:48:08,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4650320] [2020-08-21 23:48:08,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:08,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:08,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391438772] [2020-08-21 23:48:08,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:08,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:08,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:08,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:08,481 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-21 23:48:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:08,809 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-21 23:48:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:08,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-21 23:48:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:08,817 INFO L225 Difference]: With dead ends: 1479 [2020-08-21 23:48:08,818 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 23:48:08,822 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 [2020-08-21 23:48:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 23:48:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 23:48:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 23:48:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-21 23:48:08,896 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-21 23:48:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:08,896 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-21 23:48:08,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-21 23:48:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-21 23:48:08,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:08,900 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] [2020-08-21 23:48:08,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-21 23:48:08,901 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-21 23:48:08,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:08,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519083444] [2020-08-21 23:48:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 23:48:09,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519083444] [2020-08-21 23:48:09,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:09,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:09,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298429179] [2020-08-21 23:48:09,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:09,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:09,010 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-21 23:48:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:09,336 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-21 23:48:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:09,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-21 23:48:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:09,343 INFO L225 Difference]: With dead ends: 1515 [2020-08-21 23:48:09,344 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 23:48:09,346 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 [2020-08-21 23:48:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 23:48:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 23:48:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 23:48:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-21 23:48:09,408 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-21 23:48:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:09,408 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-21 23:48:09,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-21 23:48:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 23:48:09,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:09,413 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] [2020-08-21 23:48:09,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-21 23:48:09,414 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:09,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-21 23:48:09,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:09,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885809933] [2020-08-21 23:48:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 23:48:09,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885809933] [2020-08-21 23:48:09,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:09,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:09,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808758026] [2020-08-21 23:48:09,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:09,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:09,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:09,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:09,541 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-21 23:48:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:09,887 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-21 23:48:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:09,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-21 23:48:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:09,893 INFO L225 Difference]: With dead ends: 1547 [2020-08-21 23:48:09,893 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 23:48:09,895 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 [2020-08-21 23:48:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 23:48:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 23:48:09,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 23:48:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-21 23:48:09,944 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-21 23:48:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:09,944 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-21 23:48:09,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-21 23:48:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-21 23:48:09,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:09,947 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] [2020-08-21 23:48:09,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-21 23:48:09,947 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:09,949 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-21 23:48:09,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:09,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672272653] [2020-08-21 23:48:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 23:48:10,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672272653] [2020-08-21 23:48:10,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:10,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:10,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106989480] [2020-08-21 23:48:10,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:10,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:10,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:10,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:10,022 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-21 23:48:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:10,259 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-21 23:48:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:10,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-21 23:48:10,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:10,264 INFO L225 Difference]: With dead ends: 1573 [2020-08-21 23:48:10,265 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 23:48:10,267 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 [2020-08-21 23:48:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 23:48:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 23:48:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 23:48:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-21 23:48:10,316 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-21 23:48:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:10,316 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-21 23:48:10,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-21 23:48:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 23:48:10,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:10,319 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] [2020-08-21 23:48:10,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-21 23:48:10,320 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-21 23:48:10,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:10,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348983264] [2020-08-21 23:48:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:10,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 23:48:10,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348983264] [2020-08-21 23:48:10,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:10,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:10,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532873526] [2020-08-21 23:48:10,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:10,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:10,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:10,399 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-21 23:48:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:10,644 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-21 23:48:10,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:10,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-21 23:48:10,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:10,649 INFO L225 Difference]: With dead ends: 1601 [2020-08-21 23:48:10,649 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 23:48:10,652 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 [2020-08-21 23:48:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 23:48:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 23:48:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 23:48:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-21 23:48:10,749 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-21 23:48:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:10,750 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-21 23:48:10,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-21 23:48:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 23:48:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:10,755 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] [2020-08-21 23:48:10,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-21 23:48:10,755 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-21 23:48:10,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:10,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527597725] [2020-08-21 23:48:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:10,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 23:48:10,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527597725] [2020-08-21 23:48:10,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:10,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:10,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818587239] [2020-08-21 23:48:10,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:10,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:10,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:10,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:10,857 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-21 23:48:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:11,167 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-21 23:48:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:11,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-21 23:48:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:11,172 INFO L225 Difference]: With dead ends: 1656 [2020-08-21 23:48:11,172 INFO L226 Difference]: Without dead ends: 866 [2020-08-21 23:48:11,174 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 [2020-08-21 23:48:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-21 23:48:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-21 23:48:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-21 23:48:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-21 23:48:11,222 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-21 23:48:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:11,222 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-21 23:48:11,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-21 23:48:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 23:48:11,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:11,226 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] [2020-08-21 23:48:11,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-21 23:48:11,226 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:11,227 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-21 23:48:11,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:11,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873340005] [2020-08-21 23:48:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 23:48:11,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873340005] [2020-08-21 23:48:11,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:11,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:11,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143740098] [2020-08-21 23:48:11,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:11,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:11,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:11,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:11,311 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-21 23:48:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:11,609 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-21 23:48:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:11,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-21 23:48:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:11,614 INFO L225 Difference]: With dead ends: 1705 [2020-08-21 23:48:11,614 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 23:48:11,617 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 [2020-08-21 23:48:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 23:48:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-21 23:48:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 23:48:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-21 23:48:11,669 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-21 23:48:11,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:11,669 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-21 23:48:11,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-21 23:48:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 23:48:11,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:11,672 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] [2020-08-21 23:48:11,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-21 23:48:11,672 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:11,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:11,673 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-21 23:48:11,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:11,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509313818] [2020-08-21 23:48:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 23:48:11,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509313818] [2020-08-21 23:48:11,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:11,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:11,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156073087] [2020-08-21 23:48:11,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:11,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:11,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:11,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:11,765 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-21 23:48:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:12,023 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-21 23:48:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:12,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-21 23:48:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:12,028 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 23:48:12,029 INFO L226 Difference]: Without dead ends: 848 [2020-08-21 23:48:12,032 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 [2020-08-21 23:48:12,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-21 23:48:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-21 23:48:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 23:48:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-21 23:48:12,083 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-21 23:48:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:12,083 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-21 23:48:12,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-21 23:48:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 23:48:12,086 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:12,086 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] [2020-08-21 23:48:12,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-21 23:48:12,087 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:12,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-21 23:48:12,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:12,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959517093] [2020-08-21 23:48:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 23:48:12,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959517093] [2020-08-21 23:48:12,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:12,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:48:12,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771302056] [2020-08-21 23:48:12,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:48:12,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:12,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:48:12,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:48:12,169 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-21 23:48:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:12,431 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-21 23:48:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:48:12,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 23:48:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:12,437 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 23:48:12,437 INFO L226 Difference]: Without dead ends: 831 [2020-08-21 23:48:12,439 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 [2020-08-21 23:48:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-21 23:48:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-21 23:48:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-21 23:48:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-21 23:48:12,486 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-21 23:48:12,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:12,486 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-21 23:48:12,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:48:12,487 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-21 23:48:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 23:48:12,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:12,489 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] [2020-08-21 23:48:12,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-21 23:48:12,489 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-21 23:48:12,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:12,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396418138] [2020-08-21 23:48:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 23:48:12,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396418138] [2020-08-21 23:48:12,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:12,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:48:12,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728417576] [2020-08-21 23:48:12,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:48:12,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:12,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:48:12,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:48:12,561 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-21 23:48:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:12,647 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-21 23:48:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:48:12,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 23:48:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:12,656 INFO L225 Difference]: With dead ends: 2417 [2020-08-21 23:48:12,656 INFO L226 Difference]: Without dead ends: 1611 [2020-08-21 23:48:12,658 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 [2020-08-21 23:48:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-21 23:48:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-21 23:48:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-21 23:48:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-21 23:48:12,737 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-21 23:48:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:12,737 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-21 23:48:12,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:48:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-21 23:48:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 23:48:12,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:12,740 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] [2020-08-21 23:48:12,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-21 23:48:12,740 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:12,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:12,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-21 23:48:12,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:12,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403872333] [2020-08-21 23:48:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:12,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-21 23:48:12,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403872333] [2020-08-21 23:48:12,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:12,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:48:12,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272268383] [2020-08-21 23:48:12,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:48:12,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:12,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:48:12,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:48:12,842 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-21 23:48:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:12,949 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-21 23:48:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:48:12,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 23:48:12,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:12,959 INFO L225 Difference]: With dead ends: 2416 [2020-08-21 23:48:12,959 INFO L226 Difference]: Without dead ends: 1608 [2020-08-21 23:48:12,962 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 [2020-08-21 23:48:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-21 23:48:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-21 23:48:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 23:48:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-21 23:48:13,067 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-21 23:48:13,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:13,068 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-21 23:48:13,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:48:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-21 23:48:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-21 23:48:13,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:13,071 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] [2020-08-21 23:48:13,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-21 23:48:13,071 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:13,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-21 23:48:13,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:13,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059979875] [2020-08-21 23:48:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 23:48:13,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059979875] [2020-08-21 23:48:13,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:13,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:48:13,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917475791] [2020-08-21 23:48:13,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:48:13,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:13,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:48:13,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:48:13,274 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-21 23:48:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:13,557 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-21 23:48:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:48:13,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-21 23:48:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:13,573 INFO L225 Difference]: With dead ends: 4752 [2020-08-21 23:48:13,574 INFO L226 Difference]: Without dead ends: 3159 [2020-08-21 23:48:13,580 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 [2020-08-21 23:48:13,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-21 23:48:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-21 23:48:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 23:48:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-21 23:48:13,755 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-21 23:48:13,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:13,756 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-21 23:48:13,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:48:13,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-21 23:48:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 23:48:13,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:13,759 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] [2020-08-21 23:48:13,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-21 23:48:13,759 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-21 23:48:13,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:13,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717626696] [2020-08-21 23:48:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:13,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-21 23:48:13,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717626696] [2020-08-21 23:48:13,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:13,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:48:13,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895597272] [2020-08-21 23:48:13,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:48:13,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:48:13,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:48:13,899 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-21 23:48:14,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:14,226 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-21 23:48:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:48:14,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-21 23:48:14,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:14,267 INFO L225 Difference]: With dead ends: 4792 [2020-08-21 23:48:14,267 INFO L226 Difference]: Without dead ends: 3199 [2020-08-21 23:48:14,278 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 [2020-08-21 23:48:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-21 23:48:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-21 23:48:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-21 23:48:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-21 23:48:14,590 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-21 23:48:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:14,590 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-21 23:48:14,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:48:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-21 23:48:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 23:48:14,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:14,595 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] [2020-08-21 23:48:14,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-21 23:48:14,596 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-21 23:48:14,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:14,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464144313] [2020-08-21 23:48:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:48:14,643 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:48:14,643 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:48:14,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-21 23:48:14,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:48:14 BoogieIcfgContainer [2020-08-21 23:48:14,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:48:14,716 INFO L168 Benchmark]: Toolchain (without parser) took 16970.99 ms. Allocated memory was 141.0 MB in the beginning and 473.4 MB in the end (delta: 332.4 MB). Free memory was 102.1 MB in the beginning and 93.9 MB in the end (delta: 8.2 MB). Peak memory consumption was 340.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:14,717 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:48:14,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.80 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 178.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:14,719 INFO L168 Benchmark]: Boogie Preprocessor took 89.55 ms. Allocated memory is still 204.5 MB. Free memory was 178.9 MB in the beginning and 175.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:14,719 INFO L168 Benchmark]: RCFGBuilder took 909.09 ms. Allocated memory is still 204.5 MB. Free memory was 175.7 MB in the beginning and 118.0 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:14,719 INFO L168 Benchmark]: TraceAbstraction took 15393.20 ms. Allocated memory was 204.5 MB in the beginning and 473.4 MB in the end (delta: 269.0 MB). Free memory was 118.0 MB in the beginning and 93.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 293.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:48:14,721 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 571.80 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 178.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.55 ms. Allocated memory is still 204.5 MB. Free memory was 178.9 MB in the beginning and 175.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 909.09 ms. Allocated memory is still 204.5 MB. Free memory was 175.7 MB in the beginning and 118.0 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15393.20 ms. Allocated memory was 204.5 MB in the beginning and 473.4 MB in the end (delta: 269.0 MB). Free memory was 118.0 MB in the beginning and 93.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 293.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.2s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.5s, 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, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s 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: 1.9s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.8s 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...