/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:33:31,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:33:31,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:33:31,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:33:31,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:33:31,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:33:31,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:33:32,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:33:32,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:33:32,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:33:32,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:33:32,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:33:32,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:33:32,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:33:32,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:33:32,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:33:32,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:33:32,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:33:32,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:33:32,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:33:32,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:33:32,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:33:32,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:33:32,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:33:32,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:33:32,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:33:32,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:33:32,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:33:32,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:33:32,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:33:32,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:33:32,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:33:32,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:33:32,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:33:32,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:33:32,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:33:32,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:33:32,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:33:32,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:33:32,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:33:32,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:33:32,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:33:32,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:33:32,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:33:32,072 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:33:32,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:33:32,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:33:32,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:33:32,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:33:32,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:33:32,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:33:32,073 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:33:32,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:33:32,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:33:32,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:33:32,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:33:32,573 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:33:32,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-04 16:33:32,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7477f4d/3aaa1513375945dcbef2e2162fb2e0aa/FLAG72ad22a43 [2020-09-04 16:33:33,388 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:33:33,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-04 16:33:33,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7477f4d/3aaa1513375945dcbef2e2162fb2e0aa/FLAG72ad22a43 [2020-09-04 16:33:33,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7477f4d/3aaa1513375945dcbef2e2162fb2e0aa [2020-09-04 16:33:33,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:33:33,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:33:33,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:33,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:33:33,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:33:33,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:33" (1/1) ... [2020-09-04 16:33:33,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a90197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:33, skipping insertion in model container [2020-09-04 16:33:33,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:33" (1/1) ... [2020-09-04 16:33:33,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:33:33,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:33:34,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:34,076 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:33:34,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:34,288 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:33:34,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34 WrapperNode [2020-09-04 16:33:34,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:34,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:33:34,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:33:34,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:33:34,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... [2020-09-04 16:33:34,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... [2020-09-04 16:33:34,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... [2020-09-04 16:33:34,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... [2020-09-04 16:33:34,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... [2020-09-04 16:33:34,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... [2020-09-04 16:33:34,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... [2020-09-04 16:33:34,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:33:34,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:33:34,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:33:34,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:33:34,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:33:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:33:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:33:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-04 16:33:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:33:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:33:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:33:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:33:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-04 16:33:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-04 16:33:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-04 16:33:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:33:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:33:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:33:34,694 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:33:35,516 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-04 16:33:35,517 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-04 16:33:35,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:33:35,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:33:35,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:35 BoogieIcfgContainer [2020-09-04 16:33:35,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:33:35,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:33:35,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:33:35,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:33:35,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:33:33" (1/3) ... [2020-09-04 16:33:35,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bd85d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:35, skipping insertion in model container [2020-09-04 16:33:35,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:34" (2/3) ... [2020-09-04 16:33:35,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bd85d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:35, skipping insertion in model container [2020-09-04 16:33:35,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:35" (3/3) ... [2020-09-04 16:33:35,573 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-04 16:33:35,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:33:35,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:33:35,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:33:35,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:33:35,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:33:35,662 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:33:35,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:33:35,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:33:35,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:33:35,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:33:35,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:33:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-04 16:33:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 16:33:35,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:35,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:35,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:35,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:35,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-04 16:33:35,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:35,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526373258] [2020-09-04 16:33:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:35,843 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:36,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526373258] [2020-09-04 16:33:36,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:36,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:36,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554424303] [2020-09-04 16:33:36,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:36,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:36,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:36,492 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 6 states. [2020-09-04 16:33:37,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:37,116 INFO L93 Difference]: Finished difference Result 897 states and 1196 transitions. [2020-09-04 16:33:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:37,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-04 16:33:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:37,146 INFO L225 Difference]: With dead ends: 897 [2020-09-04 16:33:37,147 INFO L226 Difference]: Without dead ends: 505 [2020-09-04 16:33:37,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:33:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-09-04 16:33:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 490. [2020-09-04 16:33:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-04 16:33:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 595 transitions. [2020-09-04 16:33:37,319 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 595 transitions. Word has length 161 [2020-09-04 16:33:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:37,321 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 595 transitions. [2020-09-04 16:33:37,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 595 transitions. [2020-09-04 16:33:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-04 16:33:37,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:37,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:37,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:33:37,326 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:37,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1547598949, now seen corresponding path program 1 times [2020-09-04 16:33:37,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:37,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754435150] [2020-09-04 16:33:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:37,331 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:37,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754435150] [2020-09-04 16:33:37,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:37,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:37,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956848510] [2020-09-04 16:33:37,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:37,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:37,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:37,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:37,556 INFO L87 Difference]: Start difference. First operand 490 states and 595 transitions. Second operand 6 states. [2020-09-04 16:33:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:37,993 INFO L93 Difference]: Finished difference Result 937 states and 1192 transitions. [2020-09-04 16:33:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:37,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-04 16:33:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:37,999 INFO L225 Difference]: With dead ends: 937 [2020-09-04 16:33:37,999 INFO L226 Difference]: Without dead ends: 573 [2020-09-04 16:33:38,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:33:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-09-04 16:33:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2020-09-04 16:33:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-09-04 16:33:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 691 transitions. [2020-09-04 16:33:38,083 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 691 transitions. Word has length 169 [2020-09-04 16:33:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:38,084 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 691 transitions. [2020-09-04 16:33:38,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 691 transitions. [2020-09-04 16:33:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-04 16:33:38,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:38,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:38,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:33:38,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:38,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2044458217, now seen corresponding path program 1 times [2020-09-04 16:33:38,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:38,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358146458] [2020-09-04 16:33:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:38,121 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:38,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358146458] [2020-09-04 16:33:38,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:38,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:38,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110209781] [2020-09-04 16:33:38,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:38,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:38,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:38,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:38,228 INFO L87 Difference]: Start difference. First operand 555 states and 691 transitions. Second operand 3 states. [2020-09-04 16:33:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:38,422 INFO L93 Difference]: Finished difference Result 987 states and 1256 transitions. [2020-09-04 16:33:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:38,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-09-04 16:33:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:38,428 INFO L225 Difference]: With dead ends: 987 [2020-09-04 16:33:38,429 INFO L226 Difference]: Without dead ends: 571 [2020-09-04 16:33:38,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-09-04 16:33:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-09-04 16:33:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-09-04 16:33:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 707 transitions. [2020-09-04 16:33:38,506 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 707 transitions. Word has length 186 [2020-09-04 16:33:38,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:38,507 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 707 transitions. [2020-09-04 16:33:38,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 707 transitions. [2020-09-04 16:33:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-04 16:33:38,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:38,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:38,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:33:38,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:38,515 INFO L82 PathProgramCache]: Analyzing trace with hash 570616873, now seen corresponding path program 1 times [2020-09-04 16:33:38,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:38,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262568032] [2020-09-04 16:33:38,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:38,526 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:38,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262568032] [2020-09-04 16:33:38,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:38,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:38,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686023997] [2020-09-04 16:33:38,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:38,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:38,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:38,688 INFO L87 Difference]: Start difference. First operand 571 states and 707 transitions. Second operand 3 states. [2020-09-04 16:33:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:39,077 INFO L93 Difference]: Finished difference Result 1044 states and 1347 transitions. [2020-09-04 16:33:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:39,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-04 16:33:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:39,083 INFO L225 Difference]: With dead ends: 1044 [2020-09-04 16:33:39,083 INFO L226 Difference]: Without dead ends: 628 [2020-09-04 16:33:39,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-04 16:33:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 599. [2020-09-04 16:33:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-09-04 16:33:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2020-09-04 16:33:39,149 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 187 [2020-09-04 16:33:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:39,149 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2020-09-04 16:33:39,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2020-09-04 16:33:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 16:33:39,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:39,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:39,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:33:39,154 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:39,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1436054601, now seen corresponding path program 1 times [2020-09-04 16:33:39,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:39,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742157918] [2020-09-04 16:33:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:39,170 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:39,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742157918] [2020-09-04 16:33:39,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:39,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:39,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739922156] [2020-09-04 16:33:39,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:39,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:39,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:39,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:39,294 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand 3 states. [2020-09-04 16:33:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:39,566 INFO L93 Difference]: Finished difference Result 1084 states and 1380 transitions. [2020-09-04 16:33:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:39,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-09-04 16:33:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:39,570 INFO L225 Difference]: With dead ends: 1084 [2020-09-04 16:33:39,571 INFO L226 Difference]: Without dead ends: 615 [2020-09-04 16:33:39,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-09-04 16:33:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2020-09-04 16:33:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-04 16:33:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 760 transitions. [2020-09-04 16:33:39,631 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 760 transitions. Word has length 195 [2020-09-04 16:33:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:39,632 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 760 transitions. [2020-09-04 16:33:39,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 760 transitions. [2020-09-04 16:33:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 16:33:39,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:39,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:39,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:33:39,636 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1774700262, now seen corresponding path program 1 times [2020-09-04 16:33:39,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:39,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288756162] [2020-09-04 16:33:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:39,646 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:39,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288756162] [2020-09-04 16:33:39,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:39,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:39,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115342826] [2020-09-04 16:33:39,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:39,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:39,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:39,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:39,740 INFO L87 Difference]: Start difference. First operand 613 states and 760 transitions. Second operand 4 states. [2020-09-04 16:33:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:40,116 INFO L93 Difference]: Finished difference Result 1162 states and 1468 transitions. [2020-09-04 16:33:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:40,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-09-04 16:33:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:40,122 INFO L225 Difference]: With dead ends: 1162 [2020-09-04 16:33:40,122 INFO L226 Difference]: Without dead ends: 704 [2020-09-04 16:33:40,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-09-04 16:33:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 643. [2020-09-04 16:33:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-09-04 16:33:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 794 transitions. [2020-09-04 16:33:40,215 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 794 transitions. Word has length 200 [2020-09-04 16:33:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:40,216 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 794 transitions. [2020-09-04 16:33:40,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 794 transitions. [2020-09-04 16:33:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-04 16:33:40,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:40,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:40,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:33:40,223 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:40,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1774597616, now seen corresponding path program 1 times [2020-09-04 16:33:40,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:40,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070706110] [2020-09-04 16:33:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:40,235 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:40,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070706110] [2020-09-04 16:33:40,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:40,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:40,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166733209] [2020-09-04 16:33:40,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:40,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:40,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:40,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:40,378 INFO L87 Difference]: Start difference. First operand 643 states and 794 transitions. Second operand 4 states. [2020-09-04 16:33:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:40,792 INFO L93 Difference]: Finished difference Result 1198 states and 1507 transitions. [2020-09-04 16:33:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:40,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-04 16:33:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:40,798 INFO L225 Difference]: With dead ends: 1198 [2020-09-04 16:33:40,798 INFO L226 Difference]: Without dead ends: 710 [2020-09-04 16:33:40,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-09-04 16:33:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 635. [2020-09-04 16:33:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-09-04 16:33:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 786 transitions. [2020-09-04 16:33:40,897 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 786 transitions. Word has length 201 [2020-09-04 16:33:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:40,898 INFO L479 AbstractCegarLoop]: Abstraction has 635 states and 786 transitions. [2020-09-04 16:33:40,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 786 transitions. [2020-09-04 16:33:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-04 16:33:40,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:40,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:40,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:33:40,906 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-04 16:33:40,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:40,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212986202] [2020-09-04 16:33:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:40,916 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:41,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212986202] [2020-09-04 16:33:41,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:41,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:41,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422702134] [2020-09-04 16:33:41,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:41,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:41,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:41,115 INFO L87 Difference]: Start difference. First operand 635 states and 786 transitions. Second operand 3 states. [2020-09-04 16:33:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:41,455 INFO L93 Difference]: Finished difference Result 1148 states and 1455 transitions. [2020-09-04 16:33:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:41,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-04 16:33:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:41,462 INFO L225 Difference]: With dead ends: 1148 [2020-09-04 16:33:41,463 INFO L226 Difference]: Without dead ends: 668 [2020-09-04 16:33:41,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-09-04 16:33:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 657. [2020-09-04 16:33:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-09-04 16:33:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 811 transitions. [2020-09-04 16:33:41,561 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 811 transitions. Word has length 202 [2020-09-04 16:33:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:41,562 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 811 transitions. [2020-09-04 16:33:41,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 811 transitions. [2020-09-04 16:33:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-04 16:33:41,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:41,569 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:41,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:33:41,570 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1597515948, now seen corresponding path program 1 times [2020-09-04 16:33:41,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:41,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640854750] [2020-09-04 16:33:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:41,583 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:41,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640854750] [2020-09-04 16:33:41,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:41,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:41,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586982327] [2020-09-04 16:33:41,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:41,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:41,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:41,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:41,774 INFO L87 Difference]: Start difference. First operand 657 states and 811 transitions. Second operand 3 states. [2020-09-04 16:33:42,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:42,112 INFO L93 Difference]: Finished difference Result 1640 states and 2094 transitions. [2020-09-04 16:33:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:42,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-09-04 16:33:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:42,123 INFO L225 Difference]: With dead ends: 1640 [2020-09-04 16:33:42,123 INFO L226 Difference]: Without dead ends: 1138 [2020-09-04 16:33:42,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-09-04 16:33:42,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1136. [2020-09-04 16:33:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2020-09-04 16:33:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1420 transitions. [2020-09-04 16:33:42,307 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1420 transitions. Word has length 210 [2020-09-04 16:33:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:42,311 INFO L479 AbstractCegarLoop]: Abstraction has 1136 states and 1420 transitions. [2020-09-04 16:33:42,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1420 transitions. [2020-09-04 16:33:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-04 16:33:42,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:42,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:42,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:33:42,318 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1924666477, now seen corresponding path program 1 times [2020-09-04 16:33:42,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:42,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769999400] [2020-09-04 16:33:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:42,333 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:42,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769999400] [2020-09-04 16:33:42,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:42,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:42,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253353125] [2020-09-04 16:33:42,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:42,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:42,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:42,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:42,438 INFO L87 Difference]: Start difference. First operand 1136 states and 1420 transitions. Second operand 4 states. [2020-09-04 16:33:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:43,240 INFO L93 Difference]: Finished difference Result 3282 states and 4260 transitions. [2020-09-04 16:33:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:43,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-09-04 16:33:43,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:43,254 INFO L225 Difference]: With dead ends: 3282 [2020-09-04 16:33:43,255 INFO L226 Difference]: Without dead ends: 2213 [2020-09-04 16:33:43,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2020-09-04 16:33:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1172. [2020-09-04 16:33:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-09-04 16:33:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1468 transitions. [2020-09-04 16:33:43,470 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1468 transitions. Word has length 213 [2020-09-04 16:33:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:43,471 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1468 transitions. [2020-09-04 16:33:43,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1468 transitions. [2020-09-04 16:33:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-04 16:33:43,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:43,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:43,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:33:43,477 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:43,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-04 16:33:43,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:43,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636841569] [2020-09-04 16:33:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:43,486 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:43,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636841569] [2020-09-04 16:33:43,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:43,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:43,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270457750] [2020-09-04 16:33:43,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:43,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:43,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:43,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:43,620 INFO L87 Difference]: Start difference. First operand 1172 states and 1468 transitions. Second operand 3 states. [2020-09-04 16:33:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:44,047 INFO L93 Difference]: Finished difference Result 2297 states and 2945 transitions. [2020-09-04 16:33:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:44,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-04 16:33:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:44,055 INFO L225 Difference]: With dead ends: 2297 [2020-09-04 16:33:44,056 INFO L226 Difference]: Without dead ends: 1280 [2020-09-04 16:33:44,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-09-04 16:33:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1268. [2020-09-04 16:33:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-09-04 16:33:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1582 transitions. [2020-09-04 16:33:44,198 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1582 transitions. Word has length 230 [2020-09-04 16:33:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:44,199 INFO L479 AbstractCegarLoop]: Abstraction has 1268 states and 1582 transitions. [2020-09-04 16:33:44,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1582 transitions. [2020-09-04 16:33:44,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-04 16:33:44,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:44,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:44,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:33:44,205 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:44,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:44,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1305865704, now seen corresponding path program 1 times [2020-09-04 16:33:44,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:44,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745814799] [2020-09-04 16:33:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:44,215 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:44,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745814799] [2020-09-04 16:33:44,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:44,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:44,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677522393] [2020-09-04 16:33:44,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:44,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:44,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:44,356 INFO L87 Difference]: Start difference. First operand 1268 states and 1582 transitions. Second operand 3 states. [2020-09-04 16:33:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:44,658 INFO L93 Difference]: Finished difference Result 2474 states and 3125 transitions. [2020-09-04 16:33:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:44,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-04 16:33:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:44,666 INFO L225 Difference]: With dead ends: 2474 [2020-09-04 16:33:44,666 INFO L226 Difference]: Without dead ends: 1361 [2020-09-04 16:33:44,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-04 16:33:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1330. [2020-09-04 16:33:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-04 16:33:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1656 transitions. [2020-09-04 16:33:44,792 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1656 transitions. Word has length 230 [2020-09-04 16:33:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:44,794 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1656 transitions. [2020-09-04 16:33:44,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1656 transitions. [2020-09-04 16:33:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-04 16:33:44,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:44,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:44,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:33:44,803 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:44,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1647539560, now seen corresponding path program 1 times [2020-09-04 16:33:44,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:44,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229124932] [2020-09-04 16:33:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:44,811 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:44,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229124932] [2020-09-04 16:33:44,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:44,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:44,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274096153] [2020-09-04 16:33:44,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:44,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:44,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:44,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:44,916 INFO L87 Difference]: Start difference. First operand 1330 states and 1656 transitions. Second operand 3 states. [2020-09-04 16:33:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:45,332 INFO L93 Difference]: Finished difference Result 3083 states and 3902 transitions. [2020-09-04 16:33:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:45,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-09-04 16:33:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:45,346 INFO L225 Difference]: With dead ends: 3083 [2020-09-04 16:33:45,346 INFO L226 Difference]: Without dead ends: 1908 [2020-09-04 16:33:45,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-09-04 16:33:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2020-09-04 16:33:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2020-09-04 16:33:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2384 transitions. [2020-09-04 16:33:45,588 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2384 transitions. Word has length 238 [2020-09-04 16:33:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:45,589 INFO L479 AbstractCegarLoop]: Abstraction has 1906 states and 2384 transitions. [2020-09-04 16:33:45,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2384 transitions. [2020-09-04 16:33:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-04 16:33:45,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:45,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:45,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:33:45,598 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:45,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1847120940, now seen corresponding path program 1 times [2020-09-04 16:33:45,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:45,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553591415] [2020-09-04 16:33:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:45,607 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:45,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553591415] [2020-09-04 16:33:45,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:45,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:45,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663364969] [2020-09-04 16:33:45,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:45,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:45,713 INFO L87 Difference]: Start difference. First operand 1906 states and 2384 transitions. Second operand 3 states. [2020-09-04 16:33:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:46,006 INFO L93 Difference]: Finished difference Result 3622 states and 4566 transitions. [2020-09-04 16:33:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:46,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-04 16:33:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:46,017 INFO L225 Difference]: With dead ends: 3622 [2020-09-04 16:33:46,017 INFO L226 Difference]: Without dead ends: 1871 [2020-09-04 16:33:46,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-09-04 16:33:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1869. [2020-09-04 16:33:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2020-09-04 16:33:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2338 transitions. [2020-09-04 16:33:46,173 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2338 transitions. Word has length 240 [2020-09-04 16:33:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:46,174 INFO L479 AbstractCegarLoop]: Abstraction has 1869 states and 2338 transitions. [2020-09-04 16:33:46,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2338 transitions. [2020-09-04 16:33:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-04 16:33:46,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:46,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:46,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 16:33:46,181 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash 400073983, now seen corresponding path program 1 times [2020-09-04 16:33:46,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:46,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204574860] [2020-09-04 16:33:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:46,191 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:46,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204574860] [2020-09-04 16:33:46,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:46,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:46,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396698736] [2020-09-04 16:33:46,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:46,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:46,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:46,348 INFO L87 Difference]: Start difference. First operand 1869 states and 2338 transitions. Second operand 4 states. [2020-09-04 16:33:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:47,134 INFO L93 Difference]: Finished difference Result 5375 states and 6855 transitions. [2020-09-04 16:33:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:47,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-09-04 16:33:47,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:47,155 INFO L225 Difference]: With dead ends: 5375 [2020-09-04 16:33:47,156 INFO L226 Difference]: Without dead ends: 3661 [2020-09-04 16:33:47,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2020-09-04 16:33:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 1878. [2020-09-04 16:33:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-09-04 16:33:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2347 transitions. [2020-09-04 16:33:47,375 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2347 transitions. Word has length 241 [2020-09-04 16:33:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:47,376 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2347 transitions. [2020-09-04 16:33:47,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2347 transitions. [2020-09-04 16:33:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-04 16:33:47,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:47,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:47,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 16:33:47,383 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash -255766369, now seen corresponding path program 1 times [2020-09-04 16:33:47,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:47,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955431107] [2020-09-04 16:33:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:47,392 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:47,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955431107] [2020-09-04 16:33:47,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:47,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:47,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441867666] [2020-09-04 16:33:47,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:47,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:47,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:47,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:47,553 INFO L87 Difference]: Start difference. First operand 1878 states and 2347 transitions. Second operand 4 states. [2020-09-04 16:33:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:48,219 INFO L93 Difference]: Finished difference Result 5427 states and 6873 transitions. [2020-09-04 16:33:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:48,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-09-04 16:33:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:48,239 INFO L225 Difference]: With dead ends: 5427 [2020-09-04 16:33:48,239 INFO L226 Difference]: Without dead ends: 3680 [2020-09-04 16:33:48,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2020-09-04 16:33:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 1918. [2020-09-04 16:33:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-09-04 16:33:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2409 transitions. [2020-09-04 16:33:48,518 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2409 transitions. Word has length 241 [2020-09-04 16:33:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:48,519 INFO L479 AbstractCegarLoop]: Abstraction has 1918 states and 2409 transitions. [2020-09-04 16:33:48,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2409 transitions. [2020-09-04 16:33:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-04 16:33:48,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:48,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:48,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 16:33:48,527 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:48,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:48,527 INFO L82 PathProgramCache]: Analyzing trace with hash -460241056, now seen corresponding path program 1 times [2020-09-04 16:33:48,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:48,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914358648] [2020-09-04 16:33:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:48,541 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:48,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914358648] [2020-09-04 16:33:48,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:48,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:48,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942722579] [2020-09-04 16:33:48,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:48,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:48,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:48,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:48,678 INFO L87 Difference]: Start difference. First operand 1918 states and 2409 transitions. Second operand 4 states. [2020-09-04 16:33:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:49,426 INFO L93 Difference]: Finished difference Result 4553 states and 5817 transitions. [2020-09-04 16:33:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:49,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-09-04 16:33:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:49,442 INFO L225 Difference]: With dead ends: 4553 [2020-09-04 16:33:49,442 INFO L226 Difference]: Without dead ends: 2760 [2020-09-04 16:33:49,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2020-09-04 16:33:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1425. [2020-09-04 16:33:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-09-04 16:33:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1761 transitions. [2020-09-04 16:33:49,636 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1761 transitions. Word has length 244 [2020-09-04 16:33:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:49,637 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 1761 transitions. [2020-09-04 16:33:49,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1761 transitions. [2020-09-04 16:33:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-04 16:33:49,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:49,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:49,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 16:33:49,643 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1274309676, now seen corresponding path program 1 times [2020-09-04 16:33:49,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:49,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507335394] [2020-09-04 16:33:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:49,651 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:49,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507335394] [2020-09-04 16:33:49,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:49,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:49,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865623829] [2020-09-04 16:33:49,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:49,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:49,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:49,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:49,754 INFO L87 Difference]: Start difference. First operand 1425 states and 1761 transitions. Second operand 3 states. [2020-09-04 16:33:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:50,066 INFO L93 Difference]: Finished difference Result 2821 states and 3513 transitions. [2020-09-04 16:33:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:50,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-09-04 16:33:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:50,076 INFO L225 Difference]: With dead ends: 2821 [2020-09-04 16:33:50,076 INFO L226 Difference]: Without dead ends: 1551 [2020-09-04 16:33:50,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2020-09-04 16:33:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1521. [2020-09-04 16:33:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-09-04 16:33:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1869 transitions. [2020-09-04 16:33:50,372 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1869 transitions. Word has length 251 [2020-09-04 16:33:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:50,373 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 1869 transitions. [2020-09-04 16:33:50,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1869 transitions. [2020-09-04 16:33:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-04 16:33:50,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:50,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:50,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 16:33:50,378 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:50,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1565810676, now seen corresponding path program 1 times [2020-09-04 16:33:50,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:50,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634509677] [2020-09-04 16:33:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:50,386 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:50,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634509677] [2020-09-04 16:33:50,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:50,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:50,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862606685] [2020-09-04 16:33:50,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:50,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:50,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:50,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:50,504 INFO L87 Difference]: Start difference. First operand 1521 states and 1869 transitions. Second operand 4 states. [2020-09-04 16:33:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:51,224 INFO L93 Difference]: Finished difference Result 4339 states and 5411 transitions. [2020-09-04 16:33:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:51,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 259 [2020-09-04 16:33:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:51,239 INFO L225 Difference]: With dead ends: 4339 [2020-09-04 16:33:51,239 INFO L226 Difference]: Without dead ends: 2961 [2020-09-04 16:33:51,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-09-04 16:33:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1543. [2020-09-04 16:33:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-09-04 16:33:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1901 transitions. [2020-09-04 16:33:51,432 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1901 transitions. Word has length 259 [2020-09-04 16:33:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:51,432 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 1901 transitions. [2020-09-04 16:33:51,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1901 transitions. [2020-09-04 16:33:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-04 16:33:51,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:51,436 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:51,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 16:33:51,437 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:51,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1099402533, now seen corresponding path program 1 times [2020-09-04 16:33:51,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:51,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592210517] [2020-09-04 16:33:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:51,446 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:51,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592210517] [2020-09-04 16:33:51,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:51,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:51,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124828433] [2020-09-04 16:33:51,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:51,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:51,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:51,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:51,591 INFO L87 Difference]: Start difference. First operand 1543 states and 1901 transitions. Second operand 3 states. [2020-09-04 16:33:51,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:51,911 INFO L93 Difference]: Finished difference Result 3074 states and 3825 transitions. [2020-09-04 16:33:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:51,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-09-04 16:33:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:51,919 INFO L225 Difference]: With dead ends: 3074 [2020-09-04 16:33:51,919 INFO L226 Difference]: Without dead ends: 1686 [2020-09-04 16:33:51,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-09-04 16:33:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1609. [2020-09-04 16:33:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-09-04 16:33:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 1979 transitions. [2020-09-04 16:33:52,092 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 1979 transitions. Word has length 263 [2020-09-04 16:33:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:52,092 INFO L479 AbstractCegarLoop]: Abstraction has 1609 states and 1979 transitions. [2020-09-04 16:33:52,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 1979 transitions. [2020-09-04 16:33:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-04 16:33:52,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:52,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:52,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 16:33:52,097 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:52,097 INFO L82 PathProgramCache]: Analyzing trace with hash -962704645, now seen corresponding path program 1 times [2020-09-04 16:33:52,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:52,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826180736] [2020-09-04 16:33:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:52,103 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:52,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826180736] [2020-09-04 16:33:52,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:52,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:52,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817009671] [2020-09-04 16:33:52,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:52,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:52,198 INFO L87 Difference]: Start difference. First operand 1609 states and 1979 transitions. Second operand 3 states. [2020-09-04 16:33:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:52,355 INFO L93 Difference]: Finished difference Result 3095 states and 3839 transitions. [2020-09-04 16:33:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:52,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-09-04 16:33:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:52,360 INFO L225 Difference]: With dead ends: 3095 [2020-09-04 16:33:52,360 INFO L226 Difference]: Without dead ends: 1641 [2020-09-04 16:33:52,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2020-09-04 16:33:52,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1637. [2020-09-04 16:33:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-04 16:33:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2011 transitions. [2020-09-04 16:33:52,579 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2011 transitions. Word has length 271 [2020-09-04 16:33:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:52,580 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2011 transitions. [2020-09-04 16:33:52,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:52,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2011 transitions. [2020-09-04 16:33:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-04 16:33:52,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:52,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:52,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 16:33:52,586 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:52,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1268615101, now seen corresponding path program 1 times [2020-09-04 16:33:52,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:52,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624234956] [2020-09-04 16:33:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:52,597 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:52,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624234956] [2020-09-04 16:33:52,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:52,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:52,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739781012] [2020-09-04 16:33:52,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:52,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:52,790 INFO L87 Difference]: Start difference. First operand 1637 states and 2011 transitions. Second operand 4 states. [2020-09-04 16:33:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:53,499 INFO L93 Difference]: Finished difference Result 4705 states and 5841 transitions. [2020-09-04 16:33:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:53,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 272 [2020-09-04 16:33:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:53,508 INFO L225 Difference]: With dead ends: 4705 [2020-09-04 16:33:53,508 INFO L226 Difference]: Without dead ends: 3223 [2020-09-04 16:33:53,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2020-09-04 16:33:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 1643. [2020-09-04 16:33:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2020-09-04 16:33:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2017 transitions. [2020-09-04 16:33:53,693 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2017 transitions. Word has length 272 [2020-09-04 16:33:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:53,694 INFO L479 AbstractCegarLoop]: Abstraction has 1643 states and 2017 transitions. [2020-09-04 16:33:53,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2017 transitions. [2020-09-04 16:33:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-04 16:33:53,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:53,705 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:53,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 16:33:53,705 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:53,705 INFO L82 PathProgramCache]: Analyzing trace with hash 794458964, now seen corresponding path program 1 times [2020-09-04 16:33:53,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:53,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453325712] [2020-09-04 16:33:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:53,714 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:53,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453325712] [2020-09-04 16:33:53,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:53,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:53,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190596350] [2020-09-04 16:33:53,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:53,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:53,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:53,826 INFO L87 Difference]: Start difference. First operand 1643 states and 2017 transitions. Second operand 3 states. [2020-09-04 16:33:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:54,181 INFO L93 Difference]: Finished difference Result 4573 states and 5675 transitions. [2020-09-04 16:33:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:54,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-09-04 16:33:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:54,190 INFO L225 Difference]: With dead ends: 4573 [2020-09-04 16:33:54,190 INFO L226 Difference]: Without dead ends: 3085 [2020-09-04 16:33:54,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2020-09-04 16:33:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 1645. [2020-09-04 16:33:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-09-04 16:33:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2019 transitions. [2020-09-04 16:33:54,445 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2019 transitions. Word has length 299 [2020-09-04 16:33:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:54,446 INFO L479 AbstractCegarLoop]: Abstraction has 1645 states and 2019 transitions. [2020-09-04 16:33:54,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2019 transitions. [2020-09-04 16:33:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-04 16:33:54,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:54,450 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:54,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 16:33:54,450 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:54,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:54,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1359318092, now seen corresponding path program 1 times [2020-09-04 16:33:54,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:54,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537698245] [2020-09-04 16:33:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:54,461 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:54,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537698245] [2020-09-04 16:33:54,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:54,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:54,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202973945] [2020-09-04 16:33:54,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:54,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:54,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:54,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:54,582 INFO L87 Difference]: Start difference. First operand 1645 states and 2019 transitions. Second operand 3 states. [2020-09-04 16:33:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:54,940 INFO L93 Difference]: Finished difference Result 3276 states and 4059 transitions. [2020-09-04 16:33:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:54,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-09-04 16:33:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:54,946 INFO L225 Difference]: With dead ends: 3276 [2020-09-04 16:33:54,946 INFO L226 Difference]: Without dead ends: 1786 [2020-09-04 16:33:54,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-09-04 16:33:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1725. [2020-09-04 16:33:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-09-04 16:33:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2113 transitions. [2020-09-04 16:33:55,292 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2113 transitions. Word has length 299 [2020-09-04 16:33:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:55,293 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2113 transitions. [2020-09-04 16:33:55,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2113 transitions. [2020-09-04 16:33:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-04 16:33:55,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:55,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:55,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 16:33:55,297 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:55,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash 893866712, now seen corresponding path program 1 times [2020-09-04 16:33:55,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:55,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993251103] [2020-09-04 16:33:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:55,305 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:55,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993251103] [2020-09-04 16:33:55,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:55,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:55,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74654328] [2020-09-04 16:33:55,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:55,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:55,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:55,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:55,437 INFO L87 Difference]: Start difference. First operand 1725 states and 2113 transitions. Second operand 4 states. [2020-09-04 16:33:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:55,999 INFO L93 Difference]: Finished difference Result 3667 states and 4517 transitions. [2020-09-04 16:33:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:55,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2020-09-04 16:33:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:56,003 INFO L225 Difference]: With dead ends: 3667 [2020-09-04 16:33:56,003 INFO L226 Difference]: Without dead ends: 1993 [2020-09-04 16:33:56,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-09-04 16:33:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1951. [2020-09-04 16:33:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-09-04 16:33:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2383 transitions. [2020-09-04 16:33:56,219 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2383 transitions. Word has length 302 [2020-09-04 16:33:56,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:56,219 INFO L479 AbstractCegarLoop]: Abstraction has 1951 states and 2383 transitions. [2020-09-04 16:33:56,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2383 transitions. [2020-09-04 16:33:56,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-04 16:33:56,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:56,222 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:56,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 16:33:56,223 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:56,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:56,223 INFO L82 PathProgramCache]: Analyzing trace with hash -444397713, now seen corresponding path program 1 times [2020-09-04 16:33:56,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:56,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225478579] [2020-09-04 16:33:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:56,230 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:56,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225478579] [2020-09-04 16:33:56,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:56,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:56,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568041285] [2020-09-04 16:33:56,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:56,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:56,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:56,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:56,385 INFO L87 Difference]: Start difference. First operand 1951 states and 2383 transitions. Second operand 4 states. [2020-09-04 16:33:56,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:56,993 INFO L93 Difference]: Finished difference Result 4774 states and 5863 transitions. [2020-09-04 16:33:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:56,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-09-04 16:33:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:56,998 INFO L225 Difference]: With dead ends: 4774 [2020-09-04 16:33:56,998 INFO L226 Difference]: Without dead ends: 2886 [2020-09-04 16:33:57,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-09-04 16:33:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2374. [2020-09-04 16:33:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-09-04 16:33:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 2904 transitions. [2020-09-04 16:33:57,341 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 2904 transitions. Word has length 306 [2020-09-04 16:33:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:57,341 INFO L479 AbstractCegarLoop]: Abstraction has 2374 states and 2904 transitions. [2020-09-04 16:33:57,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 2904 transitions. [2020-09-04 16:33:57,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-09-04 16:33:57,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:57,347 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:57,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 16:33:57,348 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:57,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1267878306, now seen corresponding path program 1 times [2020-09-04 16:33:57,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:57,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330488887] [2020-09-04 16:33:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:57,354 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:57,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330488887] [2020-09-04 16:33:57,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:57,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:57,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183749279] [2020-09-04 16:33:57,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:57,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:57,497 INFO L87 Difference]: Start difference. First operand 2374 states and 2904 transitions. Second operand 4 states. [2020-09-04 16:33:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:58,535 INFO L93 Difference]: Finished difference Result 6751 states and 8361 transitions. [2020-09-04 16:33:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:58,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-09-04 16:33:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:58,542 INFO L225 Difference]: With dead ends: 6751 [2020-09-04 16:33:58,542 INFO L226 Difference]: Without dead ends: 4506 [2020-09-04 16:33:58,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2020-09-04 16:33:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2422. [2020-09-04 16:33:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-09-04 16:33:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 2964 transitions. [2020-09-04 16:33:58,867 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 2964 transitions. Word has length 309 [2020-09-04 16:33:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:58,868 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 2964 transitions. [2020-09-04 16:33:58,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 2964 transitions. [2020-09-04 16:33:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-04 16:33:58,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:58,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:58,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 16:33:58,873 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:58,874 INFO L82 PathProgramCache]: Analyzing trace with hash -747447560, now seen corresponding path program 1 times [2020-09-04 16:33:58,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:58,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326520596] [2020-09-04 16:33:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:58,883 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:59,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326520596] [2020-09-04 16:33:59,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:59,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:33:59,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073402186] [2020-09-04 16:33:59,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:33:59,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:59,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:33:59,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:33:59,014 INFO L87 Difference]: Start difference. First operand 2422 states and 2964 transitions. Second operand 5 states. [2020-09-04 16:34:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:00,615 INFO L93 Difference]: Finished difference Result 6975 states and 8625 transitions. [2020-09-04 16:34:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:34:00,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-09-04 16:34:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:00,623 INFO L225 Difference]: With dead ends: 6975 [2020-09-04 16:34:00,623 INFO L226 Difference]: Without dead ends: 4604 [2020-09-04 16:34:00,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:34:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2020-09-04 16:34:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 2356. [2020-09-04 16:34:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2356 states. [2020-09-04 16:34:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 2892 transitions. [2020-09-04 16:34:00,897 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 2892 transitions. Word has length 310 [2020-09-04 16:34:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:00,898 INFO L479 AbstractCegarLoop]: Abstraction has 2356 states and 2892 transitions. [2020-09-04 16:34:00,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:34:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 2892 transitions. [2020-09-04 16:34:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-09-04 16:34:00,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:00,903 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:00,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 16:34:00,904 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:00,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1909019013, now seen corresponding path program 1 times [2020-09-04 16:34:00,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:00,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990006492] [2020-09-04 16:34:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:00,910 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:01,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990006492] [2020-09-04 16:34:01,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:01,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:34:01,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769187499] [2020-09-04 16:34:01,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:34:01,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:01,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:34:01,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:34:01,027 INFO L87 Difference]: Start difference. First operand 2356 states and 2892 transitions. Second operand 4 states. [2020-09-04 16:34:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:01,581 INFO L93 Difference]: Finished difference Result 4839 states and 5953 transitions. [2020-09-04 16:34:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:34:01,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-09-04 16:34:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:01,586 INFO L225 Difference]: With dead ends: 4839 [2020-09-04 16:34:01,587 INFO L226 Difference]: Without dead ends: 2638 [2020-09-04 16:34:01,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:34:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2020-09-04 16:34:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2182. [2020-09-04 16:34:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2020-09-04 16:34:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2683 transitions. [2020-09-04 16:34:01,926 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2683 transitions. Word has length 316 [2020-09-04 16:34:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:01,927 INFO L479 AbstractCegarLoop]: Abstraction has 2182 states and 2683 transitions. [2020-09-04 16:34:01,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:34:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2683 transitions. [2020-09-04 16:34:01,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-04 16:34:01,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:01,932 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:01,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 16:34:01,933 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:01,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1455323989, now seen corresponding path program 1 times [2020-09-04 16:34:01,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:01,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772299663] [2020-09-04 16:34:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:01,940 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:02,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772299663] [2020-09-04 16:34:02,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:02,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:34:02,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872925234] [2020-09-04 16:34:02,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:34:02,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:02,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:34:02,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:02,085 INFO L87 Difference]: Start difference. First operand 2182 states and 2683 transitions. Second operand 3 states. [2020-09-04 16:34:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:02,598 INFO L93 Difference]: Finished difference Result 6128 states and 7596 transitions. [2020-09-04 16:34:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:02,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-09-04 16:34:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:02,605 INFO L225 Difference]: With dead ends: 6128 [2020-09-04 16:34:02,605 INFO L226 Difference]: Without dead ends: 4101 [2020-09-04 16:34:02,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2020-09-04 16:34:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4097. [2020-09-04 16:34:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4097 states. [2020-09-04 16:34:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 5063 transitions. [2020-09-04 16:34:03,119 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 5063 transitions. Word has length 328 [2020-09-04 16:34:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:03,119 INFO L479 AbstractCegarLoop]: Abstraction has 4097 states and 5063 transitions. [2020-09-04 16:34:03,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 5063 transitions. [2020-09-04 16:34:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-09-04 16:34:03,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:03,123 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:03,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 16:34:03,124 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:03,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:03,124 INFO L82 PathProgramCache]: Analyzing trace with hash 837433633, now seen corresponding path program 1 times [2020-09-04 16:34:03,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:03,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541304731] [2020-09-04 16:34:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:03,133 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:03,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541304731] [2020-09-04 16:34:03,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:03,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:34:03,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432195980] [2020-09-04 16:34:03,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:34:03,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:03,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:34:03,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:03,249 INFO L87 Difference]: Start difference. First operand 4097 states and 5063 transitions. Second operand 3 states. [2020-09-04 16:34:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:03,951 INFO L93 Difference]: Finished difference Result 8155 states and 10119 transitions. [2020-09-04 16:34:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:03,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-09-04 16:34:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:03,957 INFO L225 Difference]: With dead ends: 8155 [2020-09-04 16:34:03,957 INFO L226 Difference]: Without dead ends: 4213 [2020-09-04 16:34:03,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2020-09-04 16:34:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4189. [2020-09-04 16:34:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4189 states. [2020-09-04 16:34:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 5155 transitions. [2020-09-04 16:34:04,469 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 5155 transitions. Word has length 329 [2020-09-04 16:34:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:04,469 INFO L479 AbstractCegarLoop]: Abstraction has 4189 states and 5155 transitions. [2020-09-04 16:34:04,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 5155 transitions. [2020-09-04 16:34:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-04 16:34:04,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:04,474 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:04,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 16:34:04,474 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:04,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:04,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1972793019, now seen corresponding path program 1 times [2020-09-04 16:34:04,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:04,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430787447] [2020-09-04 16:34:04,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:04,482 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:04,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430787447] [2020-09-04 16:34:04,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:04,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:34:04,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676829945] [2020-09-04 16:34:04,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:34:04,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:04,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:34:04,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:04,843 INFO L87 Difference]: Start difference. First operand 4189 states and 5155 transitions. Second operand 3 states. [2020-09-04 16:34:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:06,870 INFO L93 Difference]: Finished difference Result 12117 states and 14971 transitions. [2020-09-04 16:34:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:06,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-09-04 16:34:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:06,881 INFO L225 Difference]: With dead ends: 12117 [2020-09-04 16:34:06,882 INFO L226 Difference]: Without dead ends: 8083 [2020-09-04 16:34:06,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8083 states. [2020-09-04 16:34:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8083 to 4185. [2020-09-04 16:34:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4185 states. [2020-09-04 16:34:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 5147 transitions. [2020-09-04 16:34:07,568 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 5147 transitions. Word has length 331 [2020-09-04 16:34:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:07,568 INFO L479 AbstractCegarLoop]: Abstraction has 4185 states and 5147 transitions. [2020-09-04 16:34:07,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 5147 transitions. [2020-09-04 16:34:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-04 16:34:07,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:07,572 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:07,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 16:34:07,572 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:07,573 INFO L82 PathProgramCache]: Analyzing trace with hash -522042299, now seen corresponding path program 1 times [2020-09-04 16:34:07,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:07,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547775216] [2020-09-04 16:34:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:07,578 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:34:07,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:34:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:34:07,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:34:07,976 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:34:07,976 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:34:07,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 16:34:08,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:34:08 BoogieIcfgContainer [2020-09-04 16:34:08,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:34:08,090 INFO L168 Benchmark]: Toolchain (without parser) took 34451.22 ms. Allocated memory was 137.9 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 101.9 MB in the beginning and 929.1 MB in the end (delta: -827.2 MB). Peak memory consumption was 577.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:08,093 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 16:34:08,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.19 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 177.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:08,094 INFO L168 Benchmark]: Boogie Preprocessor took 70.18 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 174.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:08,095 INFO L168 Benchmark]: RCFGBuilder took 1201.45 ms. Allocated memory is still 202.9 MB. Free memory was 174.4 MB in the beginning and 96.1 MB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:08,100 INFO L168 Benchmark]: TraceAbstraction took 32519.65 ms. Allocated memory was 202.9 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 95.4 MB in the beginning and 929.1 MB in the end (delta: -833.6 MB). Peak memory consumption was 505.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:08,103 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 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.19 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 177.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.18 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 174.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1201.45 ms. Allocated memory is still 202.9 MB. Free memory was 174.4 MB in the beginning and 96.1 MB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32519.65 ms. Allocated memory was 202.9 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 95.4 MB in the beginning and 929.1 MB in the end (delta: -833.6 MB). Peak memory consumption was 505.9 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, 471 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.3s, OverallIterations: 33, TraceHistogramMax: 6, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20438 SDtfs, 12801 SDslu, 22036 SDs, 0 SdLazy, 5119 SolverSat, 726 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4189occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.1s AutomataMinimizationTime, 32 MinimizatonAttempts, 20059 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...