/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 0.1.25-5644d1e-m [2020-08-19 06:49:00,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:49:00,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:49:00,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:49:00,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:49:00,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:49:00,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:49:00,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:49:00,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:49:00,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:49:00,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:49:00,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:49:00,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:49:00,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:49:00,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:49:00,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:49:00,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:49:00,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:49:00,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:49:00,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:49:00,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:49:00,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:49:00,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:49:00,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:49:00,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:49:00,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:49:00,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:49:00,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:49:00,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:49:00,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:49:00,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:49:00,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:49:00,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:49:00,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:49:00,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:49:00,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:49:00,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:49:00,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:49:00,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:49:00,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:49:00,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:49:00,608 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 [2020-08-19 06:49:00,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:49:00,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:49:00,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:49:00,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:49:00,630 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:49:00,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:49:00,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:49:00,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:49:00,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:49:00,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:49:00,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:49:00,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:49:00,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:49:00,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:49:00,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:49:00,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:49:00,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:49:00,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:49:00,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:49:00,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:49:00,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:49:00,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:49:00,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:49:00,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:49:00,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:49:00,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:49:00,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:49:00,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:49:00,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:49:00,634 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:49:00,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:49:00,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:49:00,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:49:00,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:49:00,917 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:49:00,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 06:49:00,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca734146b/aca8abc9421a48e28ee04a3d8ee65c20/FLAG72909812e [2020-08-19 06:49:01,479 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:49:01,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 06:49:01,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca734146b/aca8abc9421a48e28ee04a3d8ee65c20/FLAG72909812e [2020-08-19 06:49:01,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca734146b/aca8abc9421a48e28ee04a3d8ee65c20 [2020-08-19 06:49:01,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:49:01,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:49:01,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:01,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:49:01,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:49:01,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:01" (1/1) ... [2020-08-19 06:49:01,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24306fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:01, skipping insertion in model container [2020-08-19 06:49:01,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:01" (1/1) ... [2020-08-19 06:49:01,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:49:01,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:49:02,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:02,203 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:49:02,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:02,367 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:49:02,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02 WrapperNode [2020-08-19 06:49:02,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:02,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:49:02,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:49:02,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:49:02,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (1/1) ... [2020-08-19 06:49:02,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (1/1) ... [2020-08-19 06:49:02,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (1/1) ... [2020-08-19 06:49:02,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (1/1) ... [2020-08-19 06:49:02,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (1/1) ... [2020-08-19 06:49:02,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (1/1) ... [2020-08-19 06:49:02,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (1/1) ... [2020-08-19 06:49:02,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:49:02,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:49:02,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:49:02,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:49:02,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (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 [2020-08-19 06:49:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:49:02,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:49:02,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-19 06:49:02,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:49:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:49:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 06:49:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:49:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 06:49:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 06:49:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-19 06:49:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:49:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:49:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:49:02,682 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:49:03,271 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-19 06:49:03,272 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-19 06:49:03,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:49:03,283 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:49:03,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:03 BoogieIcfgContainer [2020-08-19 06:49:03,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:49:03,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:49:03,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:49:03,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:49:03,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:49:01" (1/3) ... [2020-08-19 06:49:03,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ccf05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:03, skipping insertion in model container [2020-08-19 06:49:03,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:02" (2/3) ... [2020-08-19 06:49:03,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ccf05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:03, skipping insertion in model container [2020-08-19 06:49:03,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:03" (3/3) ... [2020-08-19 06:49:03,297 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-19 06:49:03,307 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:49:03,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:49:03,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:49:03,352 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:49:03,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:49:03,353 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:49:03,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:49:03,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:49:03,354 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:49:03,354 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:49:03,354 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:49:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 06:49:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 06:49:03,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:03,385 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] [2020-08-19 06:49:03,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:03,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-19 06:49:03,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:03,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346827121] [2020-08-19 06:49:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:03,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346827121] [2020-08-19 06:49:03,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:03,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:03,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153547051] [2020-08-19 06:49:03,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:03,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:03,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:03,702 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-19 06:49:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:04,052 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-19 06:49:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:04,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-19 06:49:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:04,067 INFO L225 Difference]: With dead ends: 362 [2020-08-19 06:49:04,068 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 06:49:04,072 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 [2020-08-19 06:49:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 06:49:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-19 06:49:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-19 06:49:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-19 06:49:04,133 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-19 06:49:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:04,133 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-19 06:49:04,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-19 06:49:04,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 06:49:04,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:04,136 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] [2020-08-19 06:49:04,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:49:04,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:04,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:04,137 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-19 06:49:04,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:04,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522264894] [2020-08-19 06:49:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:04,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522264894] [2020-08-19 06:49:04,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:04,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:04,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880857231] [2020-08-19 06:49:04,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:04,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:04,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:04,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:04,273 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-19 06:49:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:04,478 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-19 06:49:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:04,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 06:49:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:04,481 INFO L225 Difference]: With dead ends: 363 [2020-08-19 06:49:04,481 INFO L226 Difference]: Without dead ends: 199 [2020-08-19 06:49:04,483 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 [2020-08-19 06:49:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-19 06:49:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-19 06:49:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-19 06:49:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-19 06:49:04,502 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-19 06:49:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:04,502 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-19 06:49:04,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-19 06:49:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 06:49:04,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:04,505 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] [2020-08-19 06:49:04,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:49:04,505 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:04,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:04,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-19 06:49:04,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:04,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351746684] [2020-08-19 06:49:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:04,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351746684] [2020-08-19 06:49:04,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:04,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:04,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256255969] [2020-08-19 06:49:04,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:04,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:04,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:04,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:04,626 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-19 06:49:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:04,898 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-19 06:49:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:04,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 06:49:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:04,905 INFO L225 Difference]: With dead ends: 393 [2020-08-19 06:49:04,905 INFO L226 Difference]: Without dead ends: 207 [2020-08-19 06:49:04,907 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 [2020-08-19 06:49:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-19 06:49:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-19 06:49:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 06:49:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-19 06:49:04,937 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-19 06:49:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:04,938 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-19 06:49:04,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-19 06:49:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 06:49:04,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:04,941 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] [2020-08-19 06:49:04,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:49:04,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-19 06:49:04,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:04,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47643313] [2020-08-19 06:49:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:05,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47643313] [2020-08-19 06:49:05,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:05,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:05,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425853958] [2020-08-19 06:49:05,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:05,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:05,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:05,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:05,063 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-19 06:49:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:05,275 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-19 06:49:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:05,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 06:49:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:05,277 INFO L225 Difference]: With dead ends: 398 [2020-08-19 06:49:05,277 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 06:49:05,278 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 [2020-08-19 06:49:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 06:49:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 06:49:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 06:49:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-19 06:49:05,292 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-19 06:49:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:05,293 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-19 06:49:05,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-19 06:49:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-19 06:49:05,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:05,295 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] [2020-08-19 06:49:05,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:49:05,295 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-19 06:49:05,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:05,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50356078] [2020-08-19 06:49:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:05,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50356078] [2020-08-19 06:49:05,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:05,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:05,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683121014] [2020-08-19 06:49:05,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:05,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:05,395 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-19 06:49:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:05,575 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-19 06:49:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:05,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-19 06:49:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:05,577 INFO L225 Difference]: With dead ends: 409 [2020-08-19 06:49:05,577 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 06:49:05,579 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 [2020-08-19 06:49:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 06:49:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 06:49:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 06:49:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-19 06:49:05,594 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-19 06:49:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:05,596 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-19 06:49:05,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-19 06:49:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 06:49:05,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:05,604 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] [2020-08-19 06:49:05,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:49:05,604 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-19 06:49:05,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:05,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524060319] [2020-08-19 06:49:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:05,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524060319] [2020-08-19 06:49:05,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:05,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:05,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80390387] [2020-08-19 06:49:05,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:05,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:05,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:05,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:05,678 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-19 06:49:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:05,875 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-19 06:49:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:05,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-19 06:49:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:05,878 INFO L225 Difference]: With dead ends: 409 [2020-08-19 06:49:05,878 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 06:49:05,879 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 [2020-08-19 06:49:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 06:49:05,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 06:49:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 06:49:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-19 06:49:05,889 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-19 06:49:05,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:05,890 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-19 06:49:05,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-19 06:49:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 06:49:05,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:05,891 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] [2020-08-19 06:49:05,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:49:05,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:05,892 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-19 06:49:05,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:05,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470070727] [2020-08-19 06:49:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:05,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470070727] [2020-08-19 06:49:05,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:05,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:05,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141399170] [2020-08-19 06:49:05,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:05,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:05,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:05,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:05,940 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-19 06:49:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:06,123 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-19 06:49:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:06,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-19 06:49:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:06,125 INFO L225 Difference]: With dead ends: 409 [2020-08-19 06:49:06,125 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 06:49:06,126 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 [2020-08-19 06:49:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 06:49:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 06:49:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 06:49:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-19 06:49:06,137 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-19 06:49:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:06,137 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-19 06:49:06,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-19 06:49:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 06:49:06,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:06,139 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] [2020-08-19 06:49:06,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:49:06,139 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:06,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-19 06:49:06,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:06,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354724746] [2020-08-19 06:49:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:06,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354724746] [2020-08-19 06:49:06,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:06,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:49:06,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120283761] [2020-08-19 06:49:06,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:49:06,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:06,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:49:06,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:49:06,201 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-19 06:49:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:06,531 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-19 06:49:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:49:06,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-19 06:49:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:06,535 INFO L225 Difference]: With dead ends: 605 [2020-08-19 06:49:06,535 INFO L226 Difference]: Without dead ends: 412 [2020-08-19 06:49:06,536 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 [2020-08-19 06:49:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-19 06:49:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-19 06:49:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-19 06:49:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-19 06:49:06,559 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-19 06:49:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:06,559 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-19 06:49:06,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:49:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-19 06:49:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-19 06:49:06,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:06,561 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] [2020-08-19 06:49:06,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:49:06,561 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:06,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-19 06:49:06,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:06,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595267312] [2020-08-19 06:49:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:06,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595267312] [2020-08-19 06:49:06,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:06,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:06,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41163434] [2020-08-19 06:49:06,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:06,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:06,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:06,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:06,626 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-19 06:49:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:06,857 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-19 06:49:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:06,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-19 06:49:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:06,867 INFO L225 Difference]: With dead ends: 847 [2020-08-19 06:49:06,868 INFO L226 Difference]: Without dead ends: 472 [2020-08-19 06:49:06,869 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 [2020-08-19 06:49:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-19 06:49:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-19 06:49:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-19 06:49:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-19 06:49:06,896 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-19 06:49:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:06,896 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-19 06:49:06,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-19 06:49:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-19 06:49:06,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:06,900 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] [2020-08-19 06:49:06,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:49:06,901 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-19 06:49:06,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:06,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669710954] [2020-08-19 06:49:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:06,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669710954] [2020-08-19 06:49:06,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:06,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:06,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937835826] [2020-08-19 06:49:06,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:06,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:06,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:06,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:06,976 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-19 06:49:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:07,210 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-19 06:49:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:07,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-19 06:49:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:07,214 INFO L225 Difference]: With dead ends: 936 [2020-08-19 06:49:07,214 INFO L226 Difference]: Without dead ends: 495 [2020-08-19 06:49:07,237 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 [2020-08-19 06:49:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-19 06:49:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-19 06:49:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-19 06:49:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-19 06:49:07,261 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-19 06:49:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:07,261 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-19 06:49:07,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-19 06:49:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 06:49:07,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:07,263 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] [2020-08-19 06:49:07,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:49:07,263 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:07,264 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-19 06:49:07,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:07,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190995743] [2020-08-19 06:49:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 06:49:07,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190995743] [2020-08-19 06:49:07,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:07,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:07,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431151129] [2020-08-19 06:49:07,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:07,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:07,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:07,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:07,312 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-19 06:49:07,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:07,505 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-19 06:49:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:07,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-19 06:49:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:07,509 INFO L225 Difference]: With dead ends: 993 [2020-08-19 06:49:07,509 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 06:49:07,511 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 [2020-08-19 06:49:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 06:49:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 06:49:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 06:49:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-19 06:49:07,537 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-19 06:49:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:07,537 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-19 06:49:07,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-19 06:49:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 06:49:07,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:07,539 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] [2020-08-19 06:49:07,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:49:07,539 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:07,540 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-19 06:49:07,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:07,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337208676] [2020-08-19 06:49:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 06:49:07,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337208676] [2020-08-19 06:49:07,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:07,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:07,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369330239] [2020-08-19 06:49:07,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:07,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:07,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:07,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:07,586 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-19 06:49:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:07,782 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-19 06:49:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:07,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 06:49:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:07,786 INFO L225 Difference]: With dead ends: 1027 [2020-08-19 06:49:07,786 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 06:49:07,787 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 [2020-08-19 06:49:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 06:49:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 06:49:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 06:49:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-19 06:49:07,813 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-19 06:49:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:07,813 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-19 06:49:07,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-19 06:49:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 06:49:07,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:07,815 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] [2020-08-19 06:49:07,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:49:07,816 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-19 06:49:07,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:07,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528039248] [2020-08-19 06:49:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 06:49:07,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528039248] [2020-08-19 06:49:07,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:07,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:07,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928894641] [2020-08-19 06:49:07,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:07,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:07,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:07,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:07,886 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-19 06:49:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:08,096 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-19 06:49:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:08,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 06:49:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:08,100 INFO L225 Difference]: With dead ends: 1074 [2020-08-19 06:49:08,100 INFO L226 Difference]: Without dead ends: 576 [2020-08-19 06:49:08,102 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 [2020-08-19 06:49:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-19 06:49:08,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-19 06:49:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-19 06:49:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-19 06:49:08,128 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-19 06:49:08,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:08,128 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-19 06:49:08,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-19 06:49:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:49:08,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:08,130 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] [2020-08-19 06:49:08,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:49:08,130 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:08,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-19 06:49:08,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:08,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296271989] [2020-08-19 06:49:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:08,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296271989] [2020-08-19 06:49:08,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:08,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:08,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136753460] [2020-08-19 06:49:08,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:08,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:08,189 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-19 06:49:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:08,443 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-19 06:49:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:08,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-19 06:49:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:08,447 INFO L225 Difference]: With dead ends: 1184 [2020-08-19 06:49:08,447 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 06:49:08,448 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 [2020-08-19 06:49:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 06:49:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 06:49:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 06:49:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-19 06:49:08,475 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-19 06:49:08,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:08,476 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-19 06:49:08,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-19 06:49:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-19 06:49:08,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:08,478 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] [2020-08-19 06:49:08,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 06:49:08,478 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:08,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:08,479 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-19 06:49:08,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:08,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607159278] [2020-08-19 06:49:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:08,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607159278] [2020-08-19 06:49:08,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:08,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:08,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115424185] [2020-08-19 06:49:08,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:08,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:08,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:08,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:08,540 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-19 06:49:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:08,796 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-19 06:49:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:08,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-19 06:49:08,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:08,800 INFO L225 Difference]: With dead ends: 1227 [2020-08-19 06:49:08,800 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 06:49:08,803 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 [2020-08-19 06:49:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 06:49:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 06:49:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 06:49:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-19 06:49:08,831 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-19 06:49:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:08,832 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-19 06:49:08,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-19 06:49:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 06:49:08,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:08,834 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] [2020-08-19 06:49:08,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 06:49:08,834 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:08,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:08,835 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-19 06:49:08,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:08,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641798395] [2020-08-19 06:49:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 06:49:08,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641798395] [2020-08-19 06:49:08,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:08,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:08,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478965759] [2020-08-19 06:49:08,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:08,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:08,933 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-19 06:49:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:09,218 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-19 06:49:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:09,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-19 06:49:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:09,222 INFO L225 Difference]: With dead ends: 1223 [2020-08-19 06:49:09,222 INFO L226 Difference]: Without dead ends: 619 [2020-08-19 06:49:09,224 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 [2020-08-19 06:49:09,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-19 06:49:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-19 06:49:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 06:49:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-19 06:49:09,255 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-19 06:49:09,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:09,255 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-19 06:49:09,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-19 06:49:09,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 06:49:09,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:09,257 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] [2020-08-19 06:49:09,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 06:49:09,258 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:09,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-19 06:49:09,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:09,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491907730] [2020-08-19 06:49:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 06:49:09,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491907730] [2020-08-19 06:49:09,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:09,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:09,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723225648] [2020-08-19 06:49:09,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:09,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:09,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:09,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:09,317 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-19 06:49:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:09,553 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-19 06:49:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:09,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-19 06:49:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:09,559 INFO L225 Difference]: With dead ends: 1281 [2020-08-19 06:49:09,560 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 06:49:09,562 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 [2020-08-19 06:49:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 06:49:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 06:49:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 06:49:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-19 06:49:09,601 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-19 06:49:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:09,602 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-19 06:49:09,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:09,602 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-19 06:49:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 06:49:09,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:09,605 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] [2020-08-19 06:49:09,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 06:49:09,605 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:09,606 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-19 06:49:09,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:09,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491012884] [2020-08-19 06:49:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 06:49:09,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491012884] [2020-08-19 06:49:09,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:09,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:09,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376457336] [2020-08-19 06:49:09,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:09,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:09,675 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-19 06:49:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:09,914 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-19 06:49:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:09,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-19 06:49:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:09,918 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 06:49:09,919 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 06:49:09,920 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 [2020-08-19 06:49:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 06:49:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 06:49:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 06:49:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-19 06:49:09,953 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-19 06:49:09,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:09,953 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-19 06:49:09,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:09,954 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-19 06:49:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-19 06:49:09,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:09,956 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] [2020-08-19 06:49:09,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 06:49:09,956 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-19 06:49:09,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:09,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679448148] [2020-08-19 06:49:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:09,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 06:49:10,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679448148] [2020-08-19 06:49:10,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:10,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:10,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436945106] [2020-08-19 06:49:10,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:10,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:10,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:10,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:10,006 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-19 06:49:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:10,253 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-19 06:49:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:10,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-19 06:49:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:10,258 INFO L225 Difference]: With dead ends: 1349 [2020-08-19 06:49:10,258 INFO L226 Difference]: Without dead ends: 713 [2020-08-19 06:49:10,260 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 [2020-08-19 06:49:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-19 06:49:10,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-19 06:49:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-19 06:49:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-19 06:49:10,300 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-19 06:49:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:10,301 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-19 06:49:10,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-19 06:49:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-19 06:49:10,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:10,304 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] [2020-08-19 06:49:10,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 06:49:10,304 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:10,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-19 06:49:10,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:10,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803816702] [2020-08-19 06:49:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 06:49:10,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803816702] [2020-08-19 06:49:10,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:10,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:10,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865606151] [2020-08-19 06:49:10,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:10,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:10,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:10,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:10,386 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-19 06:49:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:10,636 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-19 06:49:10,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:10,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-19 06:49:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:10,641 INFO L225 Difference]: With dead ends: 1406 [2020-08-19 06:49:10,641 INFO L226 Difference]: Without dead ends: 714 [2020-08-19 06:49:10,642 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 [2020-08-19 06:49:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-19 06:49:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-19 06:49:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 06:49:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-19 06:49:10,675 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-19 06:49:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:10,676 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-19 06:49:10,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-19 06:49:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-19 06:49:10,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:10,678 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] [2020-08-19 06:49:10,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 06:49:10,678 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-19 06:49:10,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:10,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264236992] [2020-08-19 06:49:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 06:49:10,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264236992] [2020-08-19 06:49:10,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:10,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:10,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636529580] [2020-08-19 06:49:10,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:10,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:10,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:10,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:10,731 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-19 06:49:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:11,040 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-19 06:49:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:11,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-19 06:49:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:11,047 INFO L225 Difference]: With dead ends: 1438 [2020-08-19 06:49:11,047 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 06:49:11,050 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 [2020-08-19 06:49:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 06:49:11,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 06:49:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 06:49:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-19 06:49:11,107 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-19 06:49:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:11,108 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-19 06:49:11,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-19 06:49:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-19 06:49:11,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:11,112 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] [2020-08-19 06:49:11,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 06:49:11,113 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-19 06:49:11,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:11,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122001768] [2020-08-19 06:49:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 06:49:11,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122001768] [2020-08-19 06:49:11,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:11,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:11,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055611940] [2020-08-19 06:49:11,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:11,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:11,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:11,219 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-19 06:49:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:11,582 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-19 06:49:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:11,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-19 06:49:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:11,590 INFO L225 Difference]: With dead ends: 1479 [2020-08-19 06:49:11,590 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 06:49:11,594 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 [2020-08-19 06:49:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 06:49:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 06:49:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 06:49:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-19 06:49:11,660 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-19 06:49:11,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:11,660 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-19 06:49:11,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-19 06:49:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-19 06:49:11,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:11,668 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] [2020-08-19 06:49:11,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 06:49:11,669 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:11,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-19 06:49:11,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:11,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182691043] [2020-08-19 06:49:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:11,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 06:49:11,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182691043] [2020-08-19 06:49:11,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:11,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:11,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103969164] [2020-08-19 06:49:11,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:11,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:11,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:11,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:11,773 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-19 06:49:12,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:12,073 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-19 06:49:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:12,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-19 06:49:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:12,080 INFO L225 Difference]: With dead ends: 1515 [2020-08-19 06:49:12,080 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 06:49:12,082 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 [2020-08-19 06:49:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 06:49:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 06:49:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 06:49:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-19 06:49:12,146 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-19 06:49:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:12,147 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-19 06:49:12,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-19 06:49:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-19 06:49:12,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:12,151 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] [2020-08-19 06:49:12,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 06:49:12,152 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:12,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-19 06:49:12,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:12,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860788076] [2020-08-19 06:49:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 06:49:12,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860788076] [2020-08-19 06:49:12,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:12,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:12,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854479493] [2020-08-19 06:49:12,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:12,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:12,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:12,250 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-19 06:49:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:12,486 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-19 06:49:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:12,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-19 06:49:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:12,491 INFO L225 Difference]: With dead ends: 1547 [2020-08-19 06:49:12,491 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 06:49:12,493 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 [2020-08-19 06:49:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 06:49:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 06:49:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 06:49:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-19 06:49:12,549 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-19 06:49:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:12,549 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-19 06:49:12,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-19 06:49:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-19 06:49:12,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:12,553 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] [2020-08-19 06:49:12,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 06:49:12,553 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:12,554 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-19 06:49:12,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:12,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248558365] [2020-08-19 06:49:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:12,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-19 06:49:12,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248558365] [2020-08-19 06:49:12,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:12,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:12,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990385426] [2020-08-19 06:49:12,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:12,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:12,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:12,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:12,657 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-19 06:49:12,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:12,894 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-19 06:49:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:12,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-19 06:49:12,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:12,902 INFO L225 Difference]: With dead ends: 1573 [2020-08-19 06:49:12,902 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 06:49:12,905 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 [2020-08-19 06:49:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 06:49:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 06:49:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 06:49:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-19 06:49:12,959 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-19 06:49:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:12,960 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-19 06:49:12,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-19 06:49:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 06:49:12,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:12,963 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] [2020-08-19 06:49:12,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 06:49:12,963 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:12,963 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-19 06:49:12,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:12,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034635933] [2020-08-19 06:49:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-19 06:49:13,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034635933] [2020-08-19 06:49:13,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:13,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348090421] [2020-08-19 06:49:13,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:13,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:13,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:13,046 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-19 06:49:13,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,289 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-19 06:49:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:13,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-19 06:49:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,294 INFO L225 Difference]: With dead ends: 1601 [2020-08-19 06:49:13,294 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 06:49:13,296 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 [2020-08-19 06:49:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 06:49:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 06:49:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 06:49:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-19 06:49:13,342 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-19 06:49:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,343 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-19 06:49:13,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-19 06:49:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 06:49:13,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,346 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] [2020-08-19 06:49:13,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 06:49:13,346 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-19 06:49:13,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397517423] [2020-08-19 06:49:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 06:49:13,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397517423] [2020-08-19 06:49:13,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:13,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89063137] [2020-08-19 06:49:13,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:13,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:13,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:13,428 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-19 06:49:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,688 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-19 06:49:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:13,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-19 06:49:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,693 INFO L225 Difference]: With dead ends: 1656 [2020-08-19 06:49:13,694 INFO L226 Difference]: Without dead ends: 866 [2020-08-19 06:49:13,696 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 [2020-08-19 06:49:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-19 06:49:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-19 06:49:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-19 06:49:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-19 06:49:13,743 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-19 06:49:13,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,743 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-19 06:49:13,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-19 06:49:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 06:49:13,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,746 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] [2020-08-19 06:49:13,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 06:49:13,746 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,747 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-19 06:49:13,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960833330] [2020-08-19 06:49:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 06:49:13,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960833330] [2020-08-19 06:49:13,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:13,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041371707] [2020-08-19 06:49:13,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:13,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:13,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:13,813 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-19 06:49:14,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,061 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-19 06:49:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:14,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-19 06:49:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,066 INFO L225 Difference]: With dead ends: 1705 [2020-08-19 06:49:14,066 INFO L226 Difference]: Without dead ends: 850 [2020-08-19 06:49:14,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:49:14,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-19 06:49:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-19 06:49:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 06:49:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-19 06:49:14,120 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-19 06:49:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,121 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-19 06:49:14,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-19 06:49:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 06:49:14,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,123 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] [2020-08-19 06:49:14,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 06:49:14,124 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,124 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-19 06:49:14,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770693572] [2020-08-19 06:49:14,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-19 06:49:14,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770693572] [2020-08-19 06:49:14,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:14,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620853882] [2020-08-19 06:49:14,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:14,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:14,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:14,204 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-19 06:49:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,452 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-19 06:49:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:14,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-19 06:49:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,457 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 06:49:14,457 INFO L226 Difference]: Without dead ends: 848 [2020-08-19 06:49:14,460 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 [2020-08-19 06:49:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-19 06:49:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-19 06:49:14,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 06:49:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-19 06:49:14,531 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-19 06:49:14,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,531 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-19 06:49:14,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-19 06:49:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 06:49:14,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,535 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] [2020-08-19 06:49:14,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 06:49:14,535 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-19 06:49:14,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374378052] [2020-08-19 06:49:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-19 06:49:14,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374378052] [2020-08-19 06:49:14,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:49:14,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875199764] [2020-08-19 06:49:14,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:49:14,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:49:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:49:14,643 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-19 06:49:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,900 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-19 06:49:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:49:14,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-19 06:49:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,904 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 06:49:14,905 INFO L226 Difference]: Without dead ends: 831 [2020-08-19 06:49:14,906 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 [2020-08-19 06:49:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-19 06:49:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-19 06:49:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-19 06:49:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-19 06:49:14,950 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-19 06:49:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,950 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-19 06:49:14,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:49:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-19 06:49:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 06:49:14,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,953 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] [2020-08-19 06:49:14,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 06:49:14,953 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-19 06:49:14,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354670649] [2020-08-19 06:49:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-19 06:49:15,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354670649] [2020-08-19 06:49:15,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:15,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:15,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971296992] [2020-08-19 06:49:15,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:15,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:15,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:15,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:15,010 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-19 06:49:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:15,091 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-19 06:49:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:15,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 06:49:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:15,099 INFO L225 Difference]: With dead ends: 2417 [2020-08-19 06:49:15,100 INFO L226 Difference]: Without dead ends: 1611 [2020-08-19 06:49:15,102 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 [2020-08-19 06:49:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-19 06:49:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-19 06:49:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 06:49:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-19 06:49:15,153 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-19 06:49:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:15,154 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-19 06:49:15,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-19 06:49:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 06:49:15,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:15,156 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] [2020-08-19 06:49:15,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 06:49:15,156 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:15,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-19 06:49:15,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:15,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374562368] [2020-08-19 06:49:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-19 06:49:15,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374562368] [2020-08-19 06:49:15,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:15,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:15,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789370106] [2020-08-19 06:49:15,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:15,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:15,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:15,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:15,230 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-19 06:49:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:15,377 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-19 06:49:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:15,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 06:49:15,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:15,386 INFO L225 Difference]: With dead ends: 2416 [2020-08-19 06:49:15,387 INFO L226 Difference]: Without dead ends: 1608 [2020-08-19 06:49:15,389 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 [2020-08-19 06:49:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-19 06:49:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-19 06:49:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 06:49:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-19 06:49:15,494 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-19 06:49:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:15,495 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-19 06:49:15,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-19 06:49:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-19 06:49:15,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:15,498 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] [2020-08-19 06:49:15,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 06:49:15,499 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-19 06:49:15,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:15,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355430359] [2020-08-19 06:49:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:15,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-19 06:49:15,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355430359] [2020-08-19 06:49:15,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:15,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:15,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356948755] [2020-08-19 06:49:15,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:15,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:15,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:15,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:15,602 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-19 06:49:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:15,814 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-19 06:49:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:15,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-19 06:49:15,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:15,829 INFO L225 Difference]: With dead ends: 4752 [2020-08-19 06:49:15,829 INFO L226 Difference]: Without dead ends: 3159 [2020-08-19 06:49:15,833 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 [2020-08-19 06:49:15,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-19 06:49:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-19 06:49:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 06:49:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-19 06:49:15,976 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-19 06:49:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:15,976 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-19 06:49:15,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-19 06:49:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 06:49:15,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:15,981 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] [2020-08-19 06:49:15,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 06:49:15,981 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:15,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:15,982 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-19 06:49:15,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:15,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947923956] [2020-08-19 06:49:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-19 06:49:16,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947923956] [2020-08-19 06:49:16,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:16,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:16,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944815338] [2020-08-19 06:49:16,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:16,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:16,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:16,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:16,082 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-19 06:49:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:16,526 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-19 06:49:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:16,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-19 06:49:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:16,541 INFO L225 Difference]: With dead ends: 4792 [2020-08-19 06:49:16,541 INFO L226 Difference]: Without dead ends: 3199 [2020-08-19 06:49:16,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-19 06:49:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-19 06:49:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-19 06:49:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-19 06:49:16,769 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-19 06:49:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:16,770 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-19 06:49:16,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-19 06:49:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 06:49:16,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:16,774 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] [2020-08-19 06:49:16,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 06:49:16,774 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:16,774 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-19 06:49:16,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:16,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274543943] [2020-08-19 06:49:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:49:16,814 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:49:16,814 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:49:16,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 06:49:16,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:49:16 BoogieIcfgContainer [2020-08-19 06:49:16,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:49:16,857 INFO L168 Benchmark]: Toolchain (without parser) took 15015.47 ms. Allocated memory was 141.0 MB in the beginning and 502.3 MB in the end (delta: 361.2 MB). Free memory was 103.7 MB in the beginning and 257.7 MB in the end (delta: -154.0 MB). Peak memory consumption was 207.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:16,857 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-19 06:49:16,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.84 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 179.5 MB in the end (delta: -76.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:16,858 INFO L168 Benchmark]: Boogie Preprocessor took 64.65 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 176.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:16,858 INFO L168 Benchmark]: RCFGBuilder took 855.52 ms. Allocated memory is still 204.5 MB. Free memory was 176.5 MB in the beginning and 118.5 MB in the end (delta: 58.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:16,859 INFO L168 Benchmark]: TraceAbstraction took 13564.13 ms. Allocated memory was 204.5 MB in the beginning and 502.3 MB in the end (delta: 297.8 MB). Free memory was 117.5 MB in the beginning and 257.7 MB in the end (delta: -140.2 MB). Peak memory consumption was 157.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:16,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 526.84 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 179.5 MB in the end (delta: -76.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.65 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 176.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 855.52 ms. Allocated memory is still 204.5 MB. Free memory was 176.5 MB in the beginning and 118.5 MB in the end (delta: 58.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13564.13 ms. Allocated memory was 204.5 MB in the beginning and 502.3 MB in the end (delta: 297.8 MB). Free memory was 117.5 MB in the beginning and 257.7 MB in the end (delta: -140.2 MB). Peak memory consumption was 157.6 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: 13.4s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 8.6s, 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, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.6s 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...