/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_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:00:07,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:00:07,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:00:07,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 19:00:07,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:00:07,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:00:07,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:00:07,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:00:07,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:00:07,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:00:07,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:00:07,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:00:07,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:00:07,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:00:07,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:00:07,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:00:07,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:00:07,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:00:07,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:00:07,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:00:07,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:00:07,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:00:07,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:00:07,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:00:07,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:00:07,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:00:07,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:00:07,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:00:07,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:00:07,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:00:07,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:00:07,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:00:07,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:00:07,595 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:00:07,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:00:07,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:00:07,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:00:07,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:00:07,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:00:07,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:00:07,597 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:00:07,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:00:07,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:00:07,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:00:07,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:00:07,916 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:00:07,916 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-08-22 19:00:07,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1e580a3/0f3ac4b7d8434444b8800cef9ef14ef6/FLAG4faa4257b [2020-08-22 19:00:08,536 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:00:08,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-08-22 19:00:08,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1e580a3/0f3ac4b7d8434444b8800cef9ef14ef6/FLAG4faa4257b [2020-08-22 19:00:08,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1e580a3/0f3ac4b7d8434444b8800cef9ef14ef6 [2020-08-22 19:00:08,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:00:08,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:00:08,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:00:08,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:00:08,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:00:08,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:00:08" (1/1) ... [2020-08-22 19:00:08,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363614eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:08, skipping insertion in model container [2020-08-22 19:00:08,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:00:08" (1/1) ... [2020-08-22 19:00:08,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:00:08,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:00:09,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:00:09,233 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:00:09,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:00:09,421 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:00:09,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09 WrapperNode [2020-08-22 19:00:09,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:00:09,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:00:09,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:00:09,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:00:09,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... [2020-08-22 19:00:09,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... [2020-08-22 19:00:09,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... [2020-08-22 19:00:09,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... [2020-08-22 19:00:09,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... [2020-08-22 19:00:09,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... [2020-08-22 19:00:09,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... [2020-08-22 19:00:09,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:00:09,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:00:09,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:00:09,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:00:09,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:00:09,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:00:09,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:00:09,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-22 19:00:09,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:00:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:00:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 19:00:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:00:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 19:00:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-22 19:00:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:00:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:00:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:00:09,790 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 19:00:10,440 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-22 19:00:10,441 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-22 19:00:10,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:00:10,458 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:00:10,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:00:10 BoogieIcfgContainer [2020-08-22 19:00:10,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:00:10,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:00:10,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:00:10,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:00:10,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:00:08" (1/3) ... [2020-08-22 19:00:10,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a746cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:00:10, skipping insertion in model container [2020-08-22 19:00:10,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:00:09" (2/3) ... [2020-08-22 19:00:10,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a746cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:00:10, skipping insertion in model container [2020-08-22 19:00:10,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:00:10" (3/3) ... [2020-08-22 19:00:10,478 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-08-22 19:00:10,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:00:10,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:00:10,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:00:10,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:00:10,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:00:10,545 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:00:10,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:00:10,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:00:10,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:00:10,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:00:10,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:00:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-08-22 19:00:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-22 19:00:10,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:10,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:10,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:10,626 INFO L82 PathProgramCache]: Analyzing trace with hash -51904500, now seen corresponding path program 1 times [2020-08-22 19:00:10,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:10,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707328500] [2020-08-22 19:00:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:10,704 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:11,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707328500] [2020-08-22 19:00:11,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:11,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:00:11,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858804605] [2020-08-22 19:00:11,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:00:11,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:11,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:00:11,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:00:11,303 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 6 states. [2020-08-22 19:00:11,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:11,966 INFO L93 Difference]: Finished difference Result 765 states and 1012 transitions. [2020-08-22 19:00:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:00:11,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-08-22 19:00:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:12,007 INFO L225 Difference]: With dead ends: 765 [2020-08-22 19:00:12,007 INFO L226 Difference]: Without dead ends: 438 [2020-08-22 19:00:12,019 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 [2020-08-22 19:00:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-08-22 19:00:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 425. [2020-08-22 19:00:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-22 19:00:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 503 transitions. [2020-08-22 19:00:12,202 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 503 transitions. Word has length 181 [2020-08-22 19:00:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:12,208 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 503 transitions. [2020-08-22 19:00:12,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:00:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2020-08-22 19:00:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-08-22 19:00:12,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:12,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:12,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:00:12,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1773900517, now seen corresponding path program 1 times [2020-08-22 19:00:12,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:12,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481660813] [2020-08-22 19:00:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:12,266 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:12,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481660813] [2020-08-22 19:00:12,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:12,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:12,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333154972] [2020-08-22 19:00:12,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:12,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:12,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:12,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:12,504 INFO L87 Difference]: Start difference. First operand 425 states and 503 transitions. Second operand 3 states. [2020-08-22 19:00:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:12,626 INFO L93 Difference]: Finished difference Result 977 states and 1204 transitions. [2020-08-22 19:00:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:12,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-08-22 19:00:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:12,633 INFO L225 Difference]: With dead ends: 977 [2020-08-22 19:00:12,633 INFO L226 Difference]: Without dead ends: 696 [2020-08-22 19:00:12,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-22 19:00:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-08-22 19:00:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-22 19:00:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 844 transitions. [2020-08-22 19:00:12,710 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 844 transitions. Word has length 203 [2020-08-22 19:00:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:12,711 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 844 transitions. [2020-08-22 19:00:12,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 844 transitions. [2020-08-22 19:00:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 19:00:12,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:12,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:12,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:00:12,719 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:12,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:12,720 INFO L82 PathProgramCache]: Analyzing trace with hash -144089876, now seen corresponding path program 1 times [2020-08-22 19:00:12,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:12,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744437020] [2020-08-22 19:00:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:12,732 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:12,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744437020] [2020-08-22 19:00:12,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:12,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:12,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640761623] [2020-08-22 19:00:12,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:12,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:12,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:12,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:12,882 INFO L87 Difference]: Start difference. First operand 696 states and 844 transitions. Second operand 3 states. [2020-08-22 19:00:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:13,124 INFO L93 Difference]: Finished difference Result 1023 states and 1266 transitions. [2020-08-22 19:00:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:13,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-08-22 19:00:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:13,130 INFO L225 Difference]: With dead ends: 1023 [2020-08-22 19:00:13,130 INFO L226 Difference]: Without dead ends: 742 [2020-08-22 19:00:13,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-08-22 19:00:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 720. [2020-08-22 19:00:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-08-22 19:00:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 873 transitions. [2020-08-22 19:00:13,188 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 873 transitions. Word has length 204 [2020-08-22 19:00:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:13,189 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 873 transitions. [2020-08-22 19:00:13,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 873 transitions. [2020-08-22 19:00:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-08-22 19:00:13,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:13,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:13,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:00:13,195 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash -764991549, now seen corresponding path program 1 times [2020-08-22 19:00:13,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:13,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914250349] [2020-08-22 19:00:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:13,209 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:13,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:13,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914250349] [2020-08-22 19:00:13,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:13,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:13,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121294661] [2020-08-22 19:00:13,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:13,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:13,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:13,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:13,336 INFO L87 Difference]: Start difference. First operand 720 states and 873 transitions. Second operand 3 states. [2020-08-22 19:00:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:13,503 INFO L93 Difference]: Finished difference Result 1867 states and 2315 transitions. [2020-08-22 19:00:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:13,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-08-22 19:00:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:13,514 INFO L225 Difference]: With dead ends: 1867 [2020-08-22 19:00:13,515 INFO L226 Difference]: Without dead ends: 1291 [2020-08-22 19:00:13,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-08-22 19:00:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2020-08-22 19:00:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2020-08-22 19:00:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1580 transitions. [2020-08-22 19:00:13,666 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1580 transitions. Word has length 211 [2020-08-22 19:00:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:13,667 INFO L479 AbstractCegarLoop]: Abstraction has 1289 states and 1580 transitions. [2020-08-22 19:00:13,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1580 transitions. [2020-08-22 19:00:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-08-22 19:00:13,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:13,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:13,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:00:13,677 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:13,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:13,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1086176952, now seen corresponding path program 1 times [2020-08-22 19:00:13,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:13,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777502780] [2020-08-22 19:00:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:13,695 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:13,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777502780] [2020-08-22 19:00:13,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:13,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:13,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058067539] [2020-08-22 19:00:13,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:13,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:13,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:13,868 INFO L87 Difference]: Start difference. First operand 1289 states and 1580 transitions. Second operand 3 states. [2020-08-22 19:00:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:14,122 INFO L93 Difference]: Finished difference Result 2483 states and 3077 transitions. [2020-08-22 19:00:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:14,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-08-22 19:00:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:14,135 INFO L225 Difference]: With dead ends: 2483 [2020-08-22 19:00:14,136 INFO L226 Difference]: Without dead ends: 1881 [2020-08-22 19:00:14,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:14,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-08-22 19:00:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1881. [2020-08-22 19:00:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-08-22 19:00:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2318 transitions. [2020-08-22 19:00:14,364 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2318 transitions. Word has length 211 [2020-08-22 19:00:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:14,365 INFO L479 AbstractCegarLoop]: Abstraction has 1881 states and 2318 transitions. [2020-08-22 19:00:14,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2318 transitions. [2020-08-22 19:00:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-08-22 19:00:14,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:14,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:14,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:00:14,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:14,379 INFO L82 PathProgramCache]: Analyzing trace with hash 955931285, now seen corresponding path program 1 times [2020-08-22 19:00:14,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:14,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249971558] [2020-08-22 19:00:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:14,391 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:14,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:14,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249971558] [2020-08-22 19:00:14,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:14,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:14,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293829707] [2020-08-22 19:00:14,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:14,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:14,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:14,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:14,571 INFO L87 Difference]: Start difference. First operand 1881 states and 2318 transitions. Second operand 3 states. [2020-08-22 19:00:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:15,198 INFO L93 Difference]: Finished difference Result 3929 states and 5009 transitions. [2020-08-22 19:00:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:15,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-08-22 19:00:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:15,215 INFO L225 Difference]: With dead ends: 3929 [2020-08-22 19:00:15,219 INFO L226 Difference]: Without dead ends: 2198 [2020-08-22 19:00:15,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-08-22 19:00:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2142. [2020-08-22 19:00:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2020-08-22 19:00:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2603 transitions. [2020-08-22 19:00:15,444 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2603 transitions. Word has length 229 [2020-08-22 19:00:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:15,444 INFO L479 AbstractCegarLoop]: Abstraction has 2142 states and 2603 transitions. [2020-08-22 19:00:15,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2603 transitions. [2020-08-22 19:00:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-08-22 19:00:15,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:15,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:15,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:00:15,455 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:15,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1369562677, now seen corresponding path program 1 times [2020-08-22 19:00:15,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:15,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699854152] [2020-08-22 19:00:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:15,468 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:15,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699854152] [2020-08-22 19:00:15,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:15,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:15,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183827342] [2020-08-22 19:00:15,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:15,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:15,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:15,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:15,600 INFO L87 Difference]: Start difference. First operand 2142 states and 2603 transitions. Second operand 3 states. [2020-08-22 19:00:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:16,089 INFO L93 Difference]: Finished difference Result 4341 states and 5371 transitions. [2020-08-22 19:00:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:16,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-08-22 19:00:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:16,104 INFO L225 Difference]: With dead ends: 4341 [2020-08-22 19:00:16,105 INFO L226 Difference]: Without dead ends: 2349 [2020-08-22 19:00:16,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2020-08-22 19:00:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2295. [2020-08-22 19:00:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-08-22 19:00:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2780 transitions. [2020-08-22 19:00:16,313 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2780 transitions. Word has length 229 [2020-08-22 19:00:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:16,314 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 2780 transitions. [2020-08-22 19:00:16,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2780 transitions. [2020-08-22 19:00:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-08-22 19:00:16,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:16,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:16,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:00:16,324 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:16,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1436458987, now seen corresponding path program 1 times [2020-08-22 19:00:16,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:16,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913049959] [2020-08-22 19:00:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:16,333 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:16,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913049959] [2020-08-22 19:00:16,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:16,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:16,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24127873] [2020-08-22 19:00:16,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:16,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:16,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:16,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:16,422 INFO L87 Difference]: Start difference. First operand 2295 states and 2780 transitions. Second operand 3 states. [2020-08-22 19:00:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:16,819 INFO L93 Difference]: Finished difference Result 6366 states and 7725 transitions. [2020-08-22 19:00:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:16,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-08-22 19:00:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:16,843 INFO L225 Difference]: With dead ends: 6366 [2020-08-22 19:00:16,844 INFO L226 Difference]: Without dead ends: 4221 [2020-08-22 19:00:16,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2020-08-22 19:00:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 4219. [2020-08-22 19:00:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4219 states. [2020-08-22 19:00:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 5072 transitions. [2020-08-22 19:00:17,141 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 5072 transitions. Word has length 236 [2020-08-22 19:00:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:17,141 INFO L479 AbstractCegarLoop]: Abstraction has 4219 states and 5072 transitions. [2020-08-22 19:00:17,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 5072 transitions. [2020-08-22 19:00:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 19:00:17,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:17,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:17,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:00:17,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:17,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1625861187, now seen corresponding path program 1 times [2020-08-22 19:00:17,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:17,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717537986] [2020-08-22 19:00:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:17,166 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:17,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:17,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717537986] [2020-08-22 19:00:17,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:17,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:17,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987128339] [2020-08-22 19:00:17,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:17,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:17,254 INFO L87 Difference]: Start difference. First operand 4219 states and 5072 transitions. Second operand 3 states. [2020-08-22 19:00:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:17,667 INFO L93 Difference]: Finished difference Result 8366 states and 10078 transitions. [2020-08-22 19:00:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:17,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-08-22 19:00:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:17,693 INFO L225 Difference]: With dead ends: 8366 [2020-08-22 19:00:17,693 INFO L226 Difference]: Without dead ends: 4297 [2020-08-22 19:00:17,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:17,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2020-08-22 19:00:17,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4255. [2020-08-22 19:00:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-08-22 19:00:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5092 transitions. [2020-08-22 19:00:17,986 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5092 transitions. Word has length 237 [2020-08-22 19:00:17,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:17,987 INFO L479 AbstractCegarLoop]: Abstraction has 4255 states and 5092 transitions. [2020-08-22 19:00:17,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5092 transitions. [2020-08-22 19:00:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-22 19:00:18,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:18,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:18,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:00:18,003 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:18,004 INFO L82 PathProgramCache]: Analyzing trace with hash 346316741, now seen corresponding path program 1 times [2020-08-22 19:00:18,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:18,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703307013] [2020-08-22 19:00:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:18,012 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:18,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703307013] [2020-08-22 19:00:18,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:18,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:18,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576745773] [2020-08-22 19:00:18,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:18,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:18,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:18,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:18,123 INFO L87 Difference]: Start difference. First operand 4255 states and 5092 transitions. Second operand 3 states. [2020-08-22 19:00:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:18,601 INFO L93 Difference]: Finished difference Result 8455 states and 10149 transitions. [2020-08-22 19:00:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:18,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-08-22 19:00:18,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:18,635 INFO L225 Difference]: With dead ends: 8455 [2020-08-22 19:00:18,636 INFO L226 Difference]: Without dead ends: 5649 [2020-08-22 19:00:18,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2020-08-22 19:00:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5649. [2020-08-22 19:00:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5649 states. [2020-08-22 19:00:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 6768 transitions. [2020-08-22 19:00:19,014 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 6768 transitions. Word has length 240 [2020-08-22 19:00:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:19,015 INFO L479 AbstractCegarLoop]: Abstraction has 5649 states and 6768 transitions. [2020-08-22 19:00:19,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 6768 transitions. [2020-08-22 19:00:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-22 19:00:19,035 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:19,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:19,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:00:19,036 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:19,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:19,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1652979383, now seen corresponding path program 1 times [2020-08-22 19:00:19,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:19,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591561883] [2020-08-22 19:00:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:19,046 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:00:19,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:00:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:00:19,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:00:19,225 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:00:19,225 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:00:19,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:00:19,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:00:19 BoogieIcfgContainer [2020-08-22 19:00:19,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:00:19,282 INFO L168 Benchmark]: Toolchain (without parser) took 10386.09 ms. Allocated memory was 136.3 MB in the beginning and 545.3 MB in the end (delta: 408.9 MB). Free memory was 99.6 MB in the beginning and 118.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 390.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,283 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.65 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 99.6 MB in the beginning and 175.7 MB in the end (delta: -76.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,289 INFO L168 Benchmark]: Boogie Preprocessor took 70.32 ms. Allocated memory is still 201.3 MB. Free memory was 175.7 MB in the beginning and 173.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,291 INFO L168 Benchmark]: RCFGBuilder took 971.29 ms. Allocated memory is still 201.3 MB. Free memory was 173.6 MB in the beginning and 104.5 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,292 INFO L168 Benchmark]: TraceAbstraction took 8808.15 ms. Allocated memory was 201.3 MB in the beginning and 545.3 MB in the end (delta: 343.9 MB). Free memory was 104.5 MB in the beginning and 118.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 330.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 530.65 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 99.6 MB in the beginning and 175.7 MB in the end (delta: -76.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.32 ms. Allocated memory is still 201.3 MB. Free memory was 175.7 MB in the beginning and 173.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 971.29 ms. Allocated memory is still 201.3 MB. Free memory was 173.6 MB in the beginning and 104.5 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8808.15 ms. Allocated memory was 201.3 MB in the beginning and 545.3 MB in the end (delta: 343.9 MB). Free memory was 104.5 MB in the beginning and 118.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 330.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 607]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L612] int s ; [L613] int tmp ; [L617] s = 8464 [L618] 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 = __VERIFIER_nondet_int() ; [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 ; [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 FALSE !(tmp___1 + 12288) [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 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] 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 [L293] COND FALSE !(ret <= 0) [L296] COND TRUE \read(s__hit) [L297] s__state = 8656 [L301] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] 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 FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] COND FALSE !(! tmp___9) [L495] ret = __VERIFIER_nondet_int() [L496] COND TRUE blastFlag == 2 [L497] blastFlag = 3 [L499] COND FALSE !(ret <= 0) [L502] s__state = 8672 [L503] s__init_num = 0 [L504] COND FALSE !(! tmp___10) [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] 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 FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND FALSE !(s__state == 8656) [L194] COND FALSE !(s__state == 8657) [L197] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND TRUE blastFlag == 3 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 411 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.6s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4756 SDtfs, 2850 SDslu, 4079 SDs, 0 SdLazy, 631 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5649occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 191 StatesRemovedByMinimization, 7 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...