/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_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:33:35,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:33:35,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:33:35,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 16:33:35,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:33:35,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:33:35,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:33:35,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:33:35,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:33:35,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:33:35,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:33:35,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:33:35,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:33:35,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:33:35,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:33:35,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:33:35,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:33:35,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:33:35,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:33:35,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:33:35,225 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 16:33:35,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:33:35,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:33:35,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:33:35,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:33:35,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:33:35,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:33:35,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:33:35,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:33:35,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:33:35,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:33:35,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:33:35,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:33:35,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:33:35,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:33:35,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:33:35,244 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:33:35,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:33:35,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:33:35,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:33:35,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:33:35,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:33:35,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:33:35,246 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:33:35,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:33:35,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:33:35,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:33:35,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:33:35,783 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:33:35,784 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-04 16:33:35,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/380cc0eca/c36737b9a6bf420981d4a42b4e1341f0/FLAGec4f6d376 [2020-09-04 16:33:36,481 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:33:36,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-04 16:33:36,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/380cc0eca/c36737b9a6bf420981d4a42b4e1341f0/FLAGec4f6d376 [2020-09-04 16:33:36,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/380cc0eca/c36737b9a6bf420981d4a42b4e1341f0 [2020-09-04 16:33:36,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:33:36,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:33:36,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:36,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:33:36,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:33:36,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:36" (1/1) ... [2020-09-04 16:33:36,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:36, skipping insertion in model container [2020-09-04 16:33:36,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:36" (1/1) ... [2020-09-04 16:33:36,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:33:36,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:33:37,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:37,536 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:33:37,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:37,620 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:33:37,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37 WrapperNode [2020-09-04 16:33:37,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:37,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:33:37,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:33:37,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:33:37,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (1/1) ... [2020-09-04 16:33:37,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (1/1) ... [2020-09-04 16:33:37,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (1/1) ... [2020-09-04 16:33:37,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (1/1) ... [2020-09-04 16:33:37,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (1/1) ... [2020-09-04 16:33:37,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (1/1) ... [2020-09-04 16:33:37,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (1/1) ... [2020-09-04 16:33:37,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:33:37,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:33:37,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:33:37,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:33:37,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (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 16:33:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:33:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:33:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-04 16:33:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:33:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:33:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:33:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:33:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-04 16:33:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-04 16:33:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:33:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:33:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:33:38,027 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:33:38,863 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-04 16:33:38,864 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-04 16:33:38,881 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:33:38,881 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:33:38,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:38 BoogieIcfgContainer [2020-09-04 16:33:38,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:33:38,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:33:38,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:33:38,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:33:38,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:33:36" (1/3) ... [2020-09-04 16:33:38,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413ae34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:38, skipping insertion in model container [2020-09-04 16:33:38,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:37" (2/3) ... [2020-09-04 16:33:38,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413ae34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:38, skipping insertion in model container [2020-09-04 16:33:38,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:38" (3/3) ... [2020-09-04 16:33:38,910 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-04 16:33:38,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:33:38,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:33:38,958 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:33:38,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:33:38,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:33:38,991 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:33:38,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:33:38,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:33:38,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:33:38,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:33:38,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:33:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-04 16:33:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-04 16:33:39,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:39,047 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] [2020-09-04 16:33:39,048 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:39,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:39,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-04 16:33:39,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:39,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207739095] [2020-09-04 16:33:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:39,169 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:39,744 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 16:33:39,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207739095] [2020-09-04 16:33:39,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:39,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:39,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373861499] [2020-09-04 16:33:39,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:39,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:39,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:39,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:39,784 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-09-04 16:33:40,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:40,406 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-09-04 16:33:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:40,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-04 16:33:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:40,452 INFO L225 Difference]: With dead ends: 802 [2020-09-04 16:33:40,453 INFO L226 Difference]: Without dead ends: 459 [2020-09-04 16:33:40,466 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 16:33:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-04 16:33:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-09-04 16:33:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-04 16:33:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-09-04 16:33:40,616 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-09-04 16:33:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:40,618 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-09-04 16:33:40,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-09-04 16:33:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 16:33:40,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:40,624 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] [2020-09-04 16:33:40,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:33:40,625 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:40,625 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-09-04 16:33:40,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:40,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700786591] [2020-09-04 16:33:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:40,629 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:40,852 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 16:33:40,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700786591] [2020-09-04 16:33:40,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:40,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:40,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530936866] [2020-09-04 16:33:40,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:40,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:40,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:40,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:40,856 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-09-04 16:33:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:41,299 INFO L93 Difference]: Finished difference Result 839 states and 1069 transitions. [2020-09-04 16:33:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:41,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-04 16:33:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:41,305 INFO L225 Difference]: With dead ends: 839 [2020-09-04 16:33:41,305 INFO L226 Difference]: Without dead ends: 525 [2020-09-04 16:33:41,308 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 16:33:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-09-04 16:33:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 507. [2020-09-04 16:33:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-04 16:33:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 634 transitions. [2020-09-04 16:33:41,359 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 634 transitions. Word has length 166 [2020-09-04 16:33:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:41,360 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 634 transitions. [2020-09-04 16:33:41,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 634 transitions. [2020-09-04 16:33:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 16:33:41,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:41,364 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] [2020-09-04 16:33:41,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:33:41,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:41,365 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-09-04 16:33:41,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:41,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560597548] [2020-09-04 16:33:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:41,368 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,493 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 16:33:41,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560597548] [2020-09-04 16:33:41,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:41,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:41,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023263964] [2020-09-04 16:33:41,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:41,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:41,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:41,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:41,497 INFO L87 Difference]: Start difference. First operand 507 states and 634 transitions. Second operand 3 states. [2020-09-04 16:33:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:41,629 INFO L93 Difference]: Finished difference Result 887 states and 1138 transitions. [2020-09-04 16:33:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:41,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-09-04 16:33:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:41,635 INFO L225 Difference]: With dead ends: 887 [2020-09-04 16:33:41,636 INFO L226 Difference]: Without dead ends: 523 [2020-09-04 16:33:41,638 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 16:33:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-09-04 16:33:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2020-09-04 16:33:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-09-04 16:33:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2020-09-04 16:33:41,709 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 167 [2020-09-04 16:33:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:41,710 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2020-09-04 16:33:41,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:41,710 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2020-09-04 16:33:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-04 16:33:41,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:41,714 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] [2020-09-04 16:33:41,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:33:41,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:41,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:41,716 INFO L82 PathProgramCache]: Analyzing trace with hash 611444181, now seen corresponding path program 1 times [2020-09-04 16:33:41,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:41,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070973812] [2020-09-04 16:33:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:41,720 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:41,843 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 16:33:41,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070973812] [2020-09-04 16:33:41,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:41,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:41,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768406687] [2020-09-04 16:33:41,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:41,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:41,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:41,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:41,846 INFO L87 Difference]: Start difference. First operand 523 states and 650 transitions. Second operand 3 states. [2020-09-04 16:33:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:42,013 INFO L93 Difference]: Finished difference Result 1256 states and 1619 transitions. [2020-09-04 16:33:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:42,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-04 16:33:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:42,020 INFO L225 Difference]: With dead ends: 1256 [2020-09-04 16:33:42,020 INFO L226 Difference]: Without dead ends: 892 [2020-09-04 16:33:42,023 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 16:33:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-04 16:33:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2020-09-04 16:33:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-04 16:33:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1127 transitions. [2020-09-04 16:33:42,128 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1127 transitions. Word has length 168 [2020-09-04 16:33:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:42,129 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1127 transitions. [2020-09-04 16:33:42,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1127 transitions. [2020-09-04 16:33:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-04 16:33:42,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:42,132 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 16:33:42,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:33:42,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:42,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:42,134 INFO L82 PathProgramCache]: Analyzing trace with hash 283864666, now seen corresponding path program 1 times [2020-09-04 16:33:42,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:42,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123847119] [2020-09-04 16:33:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:42,137 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,237 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 16:33:42,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123847119] [2020-09-04 16:33:42,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:42,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:42,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083769145] [2020-09-04 16:33:42,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:42,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:42,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:42,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:42,240 INFO L87 Difference]: Start difference. First operand 890 states and 1127 transitions. Second operand 3 states. [2020-09-04 16:33:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:42,436 INFO L93 Difference]: Finished difference Result 2331 states and 3030 transitions. [2020-09-04 16:33:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:42,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-04 16:33:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:42,448 INFO L225 Difference]: With dead ends: 2331 [2020-09-04 16:33:42,448 INFO L226 Difference]: Without dead ends: 1617 [2020-09-04 16:33:42,452 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 16:33:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2020-09-04 16:33:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1265. [2020-09-04 16:33:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-09-04 16:33:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1618 transitions. [2020-09-04 16:33:42,633 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1618 transitions. Word has length 169 [2020-09-04 16:33:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:42,634 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1618 transitions. [2020-09-04 16:33:42,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1618 transitions. [2020-09-04 16:33:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-04 16:33:42,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:42,638 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 16:33:42,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:33:42,638 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:42,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:42,639 INFO L82 PathProgramCache]: Analyzing trace with hash 261232412, now seen corresponding path program 1 times [2020-09-04 16:33:42,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:42,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458979983] [2020-09-04 16:33:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:42,642 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,732 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 16:33:42,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458979983] [2020-09-04 16:33:42,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:42,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:42,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011441580] [2020-09-04 16:33:42,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:42,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:42,735 INFO L87 Difference]: Start difference. First operand 1265 states and 1618 transitions. Second operand 4 states. [2020-09-04 16:33:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:43,267 INFO L93 Difference]: Finished difference Result 1462 states and 1856 transitions. [2020-09-04 16:33:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:43,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-09-04 16:33:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:43,281 INFO L225 Difference]: With dead ends: 1462 [2020-09-04 16:33:43,282 INFO L226 Difference]: Without dead ends: 1460 [2020-09-04 16:33:43,284 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 16:33:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-09-04 16:33:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1292. [2020-09-04 16:33:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-09-04 16:33:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1654 transitions. [2020-09-04 16:33:43,552 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1654 transitions. Word has length 169 [2020-09-04 16:33:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:43,554 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1654 transitions. [2020-09-04 16:33:43,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1654 transitions. [2020-09-04 16:33:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-04 16:33:43,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:43,561 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-04 16:33:43,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:33:43,562 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:43,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:43,562 INFO L82 PathProgramCache]: Analyzing trace with hash 780905830, now seen corresponding path program 1 times [2020-09-04 16:33:43,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:43,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569023661] [2020-09-04 16:33:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:43,603 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,727 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 16:33:43,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569023661] [2020-09-04 16:33:43,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:43,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:43,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082406923] [2020-09-04 16:33:43,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:43,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:43,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:43,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:43,731 INFO L87 Difference]: Start difference. First operand 1292 states and 1654 transitions. Second operand 3 states. [2020-09-04 16:33:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:43,963 INFO L93 Difference]: Finished difference Result 2391 states and 3111 transitions. [2020-09-04 16:33:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:43,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-09-04 16:33:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:43,974 INFO L225 Difference]: With dead ends: 2391 [2020-09-04 16:33:43,974 INFO L226 Difference]: Without dead ends: 1292 [2020-09-04 16:33:43,979 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 16:33:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-09-04 16:33:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2020-09-04 16:33:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-09-04 16:33:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1640 transitions. [2020-09-04 16:33:44,167 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1640 transitions. Word has length 182 [2020-09-04 16:33:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:44,168 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1640 transitions. [2020-09-04 16:33:44,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1640 transitions. [2020-09-04 16:33:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-04 16:33:44,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:44,173 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] [2020-09-04 16:33:44,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:33:44,174 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2039964467, now seen corresponding path program 1 times [2020-09-04 16:33:44,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:44,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194038428] [2020-09-04 16:33:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:44,182 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,347 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 16:33:44,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194038428] [2020-09-04 16:33:44,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:44,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:44,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954261535] [2020-09-04 16:33:44,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:44,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:44,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:44,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:44,349 INFO L87 Difference]: Start difference. First operand 1292 states and 1640 transitions. Second operand 3 states. [2020-09-04 16:33:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:44,567 INFO L93 Difference]: Finished difference Result 2412 states and 3107 transitions. [2020-09-04 16:33:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:44,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-09-04 16:33:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:44,577 INFO L225 Difference]: With dead ends: 2412 [2020-09-04 16:33:44,577 INFO L226 Difference]: Without dead ends: 1313 [2020-09-04 16:33:44,582 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 16:33:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-04 16:33:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1310. [2020-09-04 16:33:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-09-04 16:33:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1647 transitions. [2020-09-04 16:33:44,760 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1647 transitions. Word has length 183 [2020-09-04 16:33:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:44,761 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1647 transitions. [2020-09-04 16:33:44,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1647 transitions. [2020-09-04 16:33:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-04 16:33:44,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:44,765 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 16:33:44,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:33:44,766 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-09-04 16:33:44,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:44,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048167276] [2020-09-04 16:33:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:44,774 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,855 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 16:33:44,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048167276] [2020-09-04 16:33:44,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:44,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:44,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618838095] [2020-09-04 16:33:44,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:44,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:44,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:44,858 INFO L87 Difference]: Start difference. First operand 1310 states and 1647 transitions. Second operand 3 states. [2020-09-04 16:33:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:45,373 INFO L93 Difference]: Finished difference Result 2612 states and 3392 transitions. [2020-09-04 16:33:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:45,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-04 16:33:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:45,382 INFO L225 Difference]: With dead ends: 2612 [2020-09-04 16:33:45,383 INFO L226 Difference]: Without dead ends: 1429 [2020-09-04 16:33:45,387 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 16:33:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-09-04 16:33:45,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1390. [2020-09-04 16:33:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-09-04 16:33:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1757 transitions. [2020-09-04 16:33:45,541 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1757 transitions. Word has length 187 [2020-09-04 16:33:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:45,542 INFO L479 AbstractCegarLoop]: Abstraction has 1390 states and 1757 transitions. [2020-09-04 16:33:45,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1757 transitions. [2020-09-04 16:33:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-04 16:33:45,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:45,549 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] [2020-09-04 16:33:45,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:33:45,552 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:45,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:45,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1739161684, now seen corresponding path program 1 times [2020-09-04 16:33:45,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:45,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513255135] [2020-09-04 16:33:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:45,560 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,642 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 16:33:45,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513255135] [2020-09-04 16:33:45,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:45,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:45,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475497757] [2020-09-04 16:33:45,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:45,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:45,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:45,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:45,645 INFO L87 Difference]: Start difference. First operand 1390 states and 1757 transitions. Second operand 3 states. [2020-09-04 16:33:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:46,167 INFO L93 Difference]: Finished difference Result 2715 states and 3508 transitions. [2020-09-04 16:33:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:46,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-09-04 16:33:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:46,179 INFO L225 Difference]: With dead ends: 2715 [2020-09-04 16:33:46,179 INFO L226 Difference]: Without dead ends: 1518 [2020-09-04 16:33:46,185 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 16:33:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-09-04 16:33:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1467. [2020-09-04 16:33:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-09-04 16:33:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1829 transitions. [2020-09-04 16:33:46,488 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1829 transitions. Word has length 189 [2020-09-04 16:33:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:46,489 INFO L479 AbstractCegarLoop]: Abstraction has 1467 states and 1829 transitions. [2020-09-04 16:33:46,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1829 transitions. [2020-09-04 16:33:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-04 16:33:46,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:46,496 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] [2020-09-04 16:33:46,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:33:46,497 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:46,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1187027627, now seen corresponding path program 1 times [2020-09-04 16:33:46,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:46,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057282917] [2020-09-04 16:33:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:46,519 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,616 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 16:33:46,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057282917] [2020-09-04 16:33:46,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:46,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:46,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38798885] [2020-09-04 16:33:46,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:46,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:46,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:46,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:46,620 INFO L87 Difference]: Start difference. First operand 1467 states and 1829 transitions. Second operand 4 states. [2020-09-04 16:33:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:47,029 INFO L93 Difference]: Finished difference Result 1670 states and 2059 transitions. [2020-09-04 16:33:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:47,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-09-04 16:33:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:47,040 INFO L225 Difference]: With dead ends: 1670 [2020-09-04 16:33:47,040 INFO L226 Difference]: Without dead ends: 1668 [2020-09-04 16:33:47,041 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 16:33:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-09-04 16:33:47,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1457. [2020-09-04 16:33:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-09-04 16:33:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1817 transitions. [2020-09-04 16:33:47,202 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1817 transitions. Word has length 193 [2020-09-04 16:33:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:47,203 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 1817 transitions. [2020-09-04 16:33:47,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1817 transitions. [2020-09-04 16:33:47,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 16:33:47,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:47,208 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-04 16:33:47,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:33:47,208 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854146, now seen corresponding path program 1 times [2020-09-04 16:33:47,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:47,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890008530] [2020-09-04 16:33:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:47,218 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,330 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 16:33:47,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890008530] [2020-09-04 16:33:47,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:47,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:47,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749379880] [2020-09-04 16:33:47,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:47,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:47,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:47,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:47,333 INFO L87 Difference]: Start difference. First operand 1457 states and 1817 transitions. Second operand 4 states. [2020-09-04 16:33:47,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:47,763 INFO L93 Difference]: Finished difference Result 1625 states and 2006 transitions. [2020-09-04 16:33:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:47,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-04 16:33:47,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:47,776 INFO L225 Difference]: With dead ends: 1625 [2020-09-04 16:33:47,776 INFO L226 Difference]: Without dead ends: 1623 [2020-09-04 16:33:47,779 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 16:33:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-09-04 16:33:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1452. [2020-09-04 16:33:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-09-04 16:33:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1811 transitions. [2020-09-04 16:33:47,954 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1811 transitions. Word has length 199 [2020-09-04 16:33:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:47,954 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1811 transitions. [2020-09-04 16:33:47,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1811 transitions. [2020-09-04 16:33:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 16:33:47,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:47,960 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] [2020-09-04 16:33:47,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:33:47,961 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:47,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:47,962 INFO L82 PathProgramCache]: Analyzing trace with hash -455131385, now seen corresponding path program 1 times [2020-09-04 16:33:47,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:47,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429421789] [2020-09-04 16:33:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:47,971 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,069 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 16:33:48,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429421789] [2020-09-04 16:33:48,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:48,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:48,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607817130] [2020-09-04 16:33:48,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:48,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:48,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:48,072 INFO L87 Difference]: Start difference. First operand 1452 states and 1811 transitions. Second operand 3 states. [2020-09-04 16:33:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:48,650 INFO L93 Difference]: Finished difference Result 3925 states and 4991 transitions. [2020-09-04 16:33:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:48,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-04 16:33:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:48,667 INFO L225 Difference]: With dead ends: 3925 [2020-09-04 16:33:48,667 INFO L226 Difference]: Without dead ends: 2666 [2020-09-04 16:33:48,672 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 16:33:48,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-09-04 16:33:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2020-09-04 16:33:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-09-04 16:33:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3343 transitions. [2020-09-04 16:33:48,949 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3343 transitions. Word has length 200 [2020-09-04 16:33:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:48,949 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3343 transitions. [2020-09-04 16:33:48,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3343 transitions. [2020-09-04 16:33:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-04 16:33:48,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:48,955 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] [2020-09-04 16:33:48,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:33:48,956 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash 595350838, now seen corresponding path program 1 times [2020-09-04 16:33:48,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:48,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143529724] [2020-09-04 16:33:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:48,970 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,098 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 16:33:49,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143529724] [2020-09-04 16:33:49,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:49,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:33:49,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15364969] [2020-09-04 16:33:49,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:33:49,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:49,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:33:49,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:33:49,101 INFO L87 Difference]: Start difference. First operand 2664 states and 3343 transitions. Second operand 4 states. [2020-09-04 16:33:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:49,904 INFO L93 Difference]: Finished difference Result 8995 states and 11372 transitions. [2020-09-04 16:33:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:33:49,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-04 16:33:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:49,941 INFO L225 Difference]: With dead ends: 8995 [2020-09-04 16:33:49,942 INFO L226 Difference]: Without dead ends: 6524 [2020-09-04 16:33:49,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 16:33:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2020-09-04 16:33:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 4051. [2020-09-04 16:33:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4051 states. [2020-09-04 16:33:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 5031 transitions. [2020-09-04 16:33:50,614 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 5031 transitions. Word has length 201 [2020-09-04 16:33:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:50,615 INFO L479 AbstractCegarLoop]: Abstraction has 4051 states and 5031 transitions. [2020-09-04 16:33:50,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:33:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 5031 transitions. [2020-09-04 16:33:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-04 16:33:50,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:50,623 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] [2020-09-04 16:33:50,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 16:33:50,624 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:50,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:50,624 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-04 16:33:50,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:50,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611995377] [2020-09-04 16:33:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:50,637 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:50,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:50,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:50,787 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:33:50,788 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:33:50,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 16:33:50,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:33:50 BoogieIcfgContainer [2020-09-04 16:33:50,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:33:50,827 INFO L168 Benchmark]: Toolchain (without parser) took 13970.61 ms. Allocated memory was 143.7 MB in the beginning and 649.6 MB in the end (delta: 505.9 MB). Free memory was 100.2 MB in the beginning and 73.8 MB in the end (delta: 26.3 MB). Peak memory consumption was 532.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:50,828 INFO L168 Benchmark]: CDTParser took 1.09 ms. Allocated memory is still 143.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:33:50,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.24 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 174.7 MB in the end (delta: -74.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:50,830 INFO L168 Benchmark]: Boogie Preprocessor took 74.46 ms. Allocated memory is still 200.8 MB. Free memory was 174.7 MB in the beginning and 172.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:50,830 INFO L168 Benchmark]: RCFGBuilder took 1198.15 ms. Allocated memory is still 200.8 MB. Free memory was 172.6 MB in the beginning and 100.9 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:50,831 INFO L168 Benchmark]: TraceAbstraction took 11927.62 ms. Allocated memory was 200.8 MB in the beginning and 649.6 MB in the end (delta: 448.8 MB). Free memory was 100.2 MB in the beginning and 73.8 MB in the end (delta: 26.4 MB). Peak memory consumption was 475.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:50,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09 ms. Allocated memory is still 143.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.24 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 174.7 MB in the end (delta: -74.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.46 ms. Allocated memory is still 200.8 MB. Free memory was 174.7 MB in the beginning and 172.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1198.15 ms. Allocated memory is still 200.8 MB. Free memory was 172.6 MB in the beginning and 100.9 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11927.62 ms. Allocated memory was 200.8 MB in the beginning and 649.6 MB in the end (delta: 448.8 MB). Free memory was 100.2 MB in the beginning and 73.8 MB in the end (delta: 26.4 MB). Peak memory consumption was 475.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 640]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L645] int s ; [L646] int tmp ; [L650] s = 8464 [L651] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__reuse_message = 0 [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND TRUE tmp___1 + 12288 [L90] COND TRUE tmp___2 + 16384 [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND FALSE !(state == 8496) [L614] COND FALSE !(\read(s__debug)) [L620] COND FALSE !(cb != 0) [L629] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 8512 [L297] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND TRUE state == 8496 [L640] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 426 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 15, TraceHistogramMax: 2, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6683 SDtfs, 6299 SDslu, 6738 SDs, 0 SdLazy, 1313 SolverSat, 235 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4051occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 3505 StatesRemovedByMinimization, 12 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...