/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 0.1.25-3af5e1f [2020-09-04 16:33:52,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:33:52,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:33:52,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:33:52,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:33:52,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:33:52,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:33:52,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:33:52,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:33:52,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:33:52,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:33:52,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:33:52,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:33:52,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:33:52,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:33:52,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:33:52,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:33:52,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:33:52,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:33:52,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:33:52,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:33:52,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:33:52,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:33:52,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:33:52,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:33:52,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:33:52,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:33:52,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:33:52,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:33:52,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:33:52,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:33:52,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:33:52,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:33:52,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:33:52,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:33:52,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:33:52,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:33:52,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:33:52,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:33:52,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:33:52,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:33:52,395 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 16:33:52,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:33:52,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:33:52,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:33:52,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:33:52,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:33:52,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:33:52,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:33:52,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:33:52,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:33:52,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:33:52,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:33:52,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:33:52,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:33:52,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:33:52,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:33:52,423 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:33:52,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:33:52,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:33:52,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:33:52,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:33:52,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:33:52,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:33:52,424 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:33:52,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:33:52,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:33:52,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:33:52,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:33:52,876 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:33:52,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-04 16:33:52,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0e4bd79/3a9aab486af64d59aa2e5f5e24e709ed/FLAGf03c65f32 [2020-09-04 16:33:53,584 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:33:53,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-04 16:33:53,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0e4bd79/3a9aab486af64d59aa2e5f5e24e709ed/FLAGf03c65f32 [2020-09-04 16:33:53,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0e4bd79/3a9aab486af64d59aa2e5f5e24e709ed [2020-09-04 16:33:53,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:33:53,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:33:53,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:53,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:33:53,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:33:53,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:53" (1/1) ... [2020-09-04 16:33:53,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6017e0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:53, skipping insertion in model container [2020-09-04 16:33:53,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:53" (1/1) ... [2020-09-04 16:33:53,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:33:53,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:33:54,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:54,315 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:33:54,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:54,486 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:33:54,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54 WrapperNode [2020-09-04 16:33:54,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:54,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:33:54,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:33:54,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:33:54,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (1/1) ... [2020-09-04 16:33:54,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (1/1) ... [2020-09-04 16:33:54,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (1/1) ... [2020-09-04 16:33:54,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (1/1) ... [2020-09-04 16:33:54,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (1/1) ... [2020-09-04 16:33:54,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (1/1) ... [2020-09-04 16:33:54,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (1/1) ... [2020-09-04 16:33:54,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:33:54,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:33:54,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:33:54,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:33:54,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (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 16:33:54,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:33:54,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:33:54,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-04 16:33:54,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:33:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:33:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:33:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:33:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-04 16:33:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-04 16:33:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:33:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:33:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:33:54,903 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:33:55,556 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-04 16:33:55,557 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-04 16:33:55,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:33:55,575 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:33:55,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:55 BoogieIcfgContainer [2020-09-04 16:33:55,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:33:55,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:33:55,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:33:55,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:33:55,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:33:53" (1/3) ... [2020-09-04 16:33:55,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e49cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:55, skipping insertion in model container [2020-09-04 16:33:55,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:54" (2/3) ... [2020-09-04 16:33:55,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e49cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:55, skipping insertion in model container [2020-09-04 16:33:55,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:55" (3/3) ... [2020-09-04 16:33:55,595 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-09-04 16:33:55,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:33:55,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:33:55,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:33:55,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:33:55,670 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:33:55,671 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:33:55,671 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:33:55,671 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:33:55,671 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:33:55,671 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:33:55,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:33:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-09-04 16:33:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-04 16:33:55,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:55,729 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] [2020-09-04 16:33:55,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash -51904500, now seen corresponding path program 1 times [2020-09-04 16:33:55,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:55,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140870723] [2020-09-04 16:33:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:55,822 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:56,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140870723] [2020-09-04 16:33:56,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:56,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:56,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998096727] [2020-09-04 16:33:56,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:56,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:56,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:56,419 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 6 states. [2020-09-04 16:33:57,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:57,134 INFO L93 Difference]: Finished difference Result 765 states and 1012 transitions. [2020-09-04 16:33:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:57,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-04 16:33:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:57,173 INFO L225 Difference]: With dead ends: 765 [2020-09-04 16:33:57,173 INFO L226 Difference]: Without dead ends: 438 [2020-09-04 16:33:57,185 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 16:33:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-09-04 16:33:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 425. [2020-09-04 16:33:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-09-04 16:33:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 503 transitions. [2020-09-04 16:33:57,308 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 503 transitions. Word has length 181 [2020-09-04 16:33:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:57,309 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 503 transitions. [2020-09-04 16:33:57,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2020-09-04 16:33:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-04 16:33:57,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:57,315 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] [2020-09-04 16:33:57,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:33:57,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:57,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1773900517, now seen corresponding path program 1 times [2020-09-04 16:33:57,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:57,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977001296] [2020-09-04 16:33:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:57,344 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:57,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977001296] [2020-09-04 16:33:57,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:57,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:57,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526418671] [2020-09-04 16:33:57,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:57,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:57,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:57,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:57,473 INFO L87 Difference]: Start difference. First operand 425 states and 503 transitions. Second operand 3 states. [2020-09-04 16:33:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:57,571 INFO L93 Difference]: Finished difference Result 977 states and 1204 transitions. [2020-09-04 16:33:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:57,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-09-04 16:33:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:57,577 INFO L225 Difference]: With dead ends: 977 [2020-09-04 16:33:57,577 INFO L226 Difference]: Without dead ends: 696 [2020-09-04 16:33:57,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:57,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-04 16:33:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-04 16:33:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-04 16:33:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 844 transitions. [2020-09-04 16:33:57,647 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 844 transitions. Word has length 203 [2020-09-04 16:33:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:57,648 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 844 transitions. [2020-09-04 16:33:57,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 844 transitions. [2020-09-04 16:33:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 16:33:57,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:57,653 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] [2020-09-04 16:33:57,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:33:57,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash -144089876, now seen corresponding path program 1 times [2020-09-04 16:33:57,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:57,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327480493] [2020-09-04 16:33:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:57,663 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:57,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327480493] [2020-09-04 16:33:57,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:57,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:57,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233619414] [2020-09-04 16:33:57,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:57,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:57,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:57,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:57,792 INFO L87 Difference]: Start difference. First operand 696 states and 844 transitions. Second operand 3 states. [2020-09-04 16:33:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:58,090 INFO L93 Difference]: Finished difference Result 1023 states and 1266 transitions. [2020-09-04 16:33:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:58,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-09-04 16:33:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:58,097 INFO L225 Difference]: With dead ends: 1023 [2020-09-04 16:33:58,097 INFO L226 Difference]: Without dead ends: 742 [2020-09-04 16:33:58,099 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 16:33:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-09-04 16:33:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 720. [2020-09-04 16:33:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-09-04 16:33:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 873 transitions. [2020-09-04 16:33:58,171 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 873 transitions. Word has length 204 [2020-09-04 16:33:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:58,172 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 873 transitions. [2020-09-04 16:33:58,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 873 transitions. [2020-09-04 16:33:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-04 16:33:58,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:58,181 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] [2020-09-04 16:33:58,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:33:58,181 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:58,182 INFO L82 PathProgramCache]: Analyzing trace with hash -764991549, now seen corresponding path program 1 times [2020-09-04 16:33:58,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:58,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451088996] [2020-09-04 16:33:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:58,205 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:58,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:58,468 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 16:33:58,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451088996] [2020-09-04 16:33:58,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:58,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:58,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216617433] [2020-09-04 16:33:58,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:58,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:58,473 INFO L87 Difference]: Start difference. First operand 720 states and 873 transitions. Second operand 3 states. [2020-09-04 16:33:58,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:58,683 INFO L93 Difference]: Finished difference Result 1867 states and 2315 transitions. [2020-09-04 16:33:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:58,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-04 16:33:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:58,695 INFO L225 Difference]: With dead ends: 1867 [2020-09-04 16:33:58,695 INFO L226 Difference]: Without dead ends: 1291 [2020-09-04 16:33:58,699 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 16:33:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-09-04 16:33:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2020-09-04 16:33:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2020-09-04 16:33:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1580 transitions. [2020-09-04 16:33:58,854 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1580 transitions. Word has length 211 [2020-09-04 16:33:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:58,855 INFO L479 AbstractCegarLoop]: Abstraction has 1289 states and 1580 transitions. [2020-09-04 16:33:58,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1580 transitions. [2020-09-04 16:33:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-04 16:33:58,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:58,865 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] [2020-09-04 16:33:58,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:33:58,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1086176952, now seen corresponding path program 1 times [2020-09-04 16:33:58,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:58,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694053882] [2020-09-04 16:33:58,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:58,888 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:59,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694053882] [2020-09-04 16:33:59,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:59,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:59,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015121513] [2020-09-04 16:33:59,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:59,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:59,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:59,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:59,174 INFO L87 Difference]: Start difference. First operand 1289 states and 1580 transitions. Second operand 3 states. [2020-09-04 16:33:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:59,467 INFO L93 Difference]: Finished difference Result 2483 states and 3077 transitions. [2020-09-04 16:33:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:59,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-04 16:33:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:59,484 INFO L225 Difference]: With dead ends: 2483 [2020-09-04 16:33:59,484 INFO L226 Difference]: Without dead ends: 1881 [2020-09-04 16:33:59,487 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 16:33:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-04 16:33:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1881. [2020-09-04 16:33:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-09-04 16:33:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2318 transitions. [2020-09-04 16:33:59,687 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2318 transitions. Word has length 211 [2020-09-04 16:33:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:59,688 INFO L479 AbstractCegarLoop]: Abstraction has 1881 states and 2318 transitions. [2020-09-04 16:33:59,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2318 transitions. [2020-09-04 16:33:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-04 16:33:59,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:59,696 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] [2020-09-04 16:33:59,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:33:59,697 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:59,697 INFO L82 PathProgramCache]: Analyzing trace with hash 955931285, now seen corresponding path program 1 times [2020-09-04 16:33:59,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:59,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475303154] [2020-09-04 16:33:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:59,709 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:59,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475303154] [2020-09-04 16:33:59,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:59,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:59,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429418492] [2020-09-04 16:33:59,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:59,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:59,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:59,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:59,873 INFO L87 Difference]: Start difference. First operand 1881 states and 2318 transitions. Second operand 3 states. [2020-09-04 16:34:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:00,338 INFO L93 Difference]: Finished difference Result 3929 states and 5009 transitions. [2020-09-04 16:34:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:00,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-04 16:34:00,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:00,353 INFO L225 Difference]: With dead ends: 3929 [2020-09-04 16:34:00,356 INFO L226 Difference]: Without dead ends: 2198 [2020-09-04 16:34:00,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-09-04 16:34:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2142. [2020-09-04 16:34:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2020-09-04 16:34:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2603 transitions. [2020-09-04 16:34:00,547 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2603 transitions. Word has length 229 [2020-09-04 16:34:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:00,548 INFO L479 AbstractCegarLoop]: Abstraction has 2142 states and 2603 transitions. [2020-09-04 16:34:00,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2603 transitions. [2020-09-04 16:34:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-04 16:34:00,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:00,558 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] [2020-09-04 16:34:00,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:34:00,558 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1369562677, now seen corresponding path program 1 times [2020-09-04 16:34:00,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:00,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420910898] [2020-09-04 16:34:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:00,566 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:00,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420910898] [2020-09-04 16:34:00,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:00,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:34:00,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46870533] [2020-09-04 16:34:00,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:34:00,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:00,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:34:00,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:00,699 INFO L87 Difference]: Start difference. First operand 2142 states and 2603 transitions. Second operand 3 states. [2020-09-04 16:34:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:01,144 INFO L93 Difference]: Finished difference Result 4341 states and 5371 transitions. [2020-09-04 16:34:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:01,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-04 16:34:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:01,160 INFO L225 Difference]: With dead ends: 4341 [2020-09-04 16:34:01,161 INFO L226 Difference]: Without dead ends: 2349 [2020-09-04 16:34:01,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:01,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2020-09-04 16:34:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2295. [2020-09-04 16:34:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-09-04 16:34:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2780 transitions. [2020-09-04 16:34:01,349 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2780 transitions. Word has length 229 [2020-09-04 16:34:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:01,349 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 2780 transitions. [2020-09-04 16:34:01,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2780 transitions. [2020-09-04 16:34:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-04 16:34:01,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:01,358 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] [2020-09-04 16:34:01,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:34:01,359 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:01,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1436458987, now seen corresponding path program 1 times [2020-09-04 16:34:01,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:01,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704208972] [2020-09-04 16:34:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:01,366 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:01,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704208972] [2020-09-04 16:34:01,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:01,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:34:01,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719658374] [2020-09-04 16:34:01,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:34:01,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:01,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:34:01,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:01,553 INFO L87 Difference]: Start difference. First operand 2295 states and 2780 transitions. Second operand 3 states. [2020-09-04 16:34:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:01,920 INFO L93 Difference]: Finished difference Result 6366 states and 7725 transitions. [2020-09-04 16:34:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:01,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-09-04 16:34:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:01,942 INFO L225 Difference]: With dead ends: 6366 [2020-09-04 16:34:01,943 INFO L226 Difference]: Without dead ends: 4221 [2020-09-04 16:34:01,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2020-09-04 16:34:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 4219. [2020-09-04 16:34:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4219 states. [2020-09-04 16:34:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 5072 transitions. [2020-09-04 16:34:02,388 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 5072 transitions. Word has length 236 [2020-09-04 16:34:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:02,389 INFO L479 AbstractCegarLoop]: Abstraction has 4219 states and 5072 transitions. [2020-09-04 16:34:02,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 5072 transitions. [2020-09-04 16:34:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-04 16:34:02,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:02,402 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] [2020-09-04 16:34:02,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:34:02,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:02,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1625861187, now seen corresponding path program 1 times [2020-09-04 16:34:02,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:02,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596444421] [2020-09-04 16:34:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:02,411 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:02,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596444421] [2020-09-04 16:34:02,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:02,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:34:02,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107541911] [2020-09-04 16:34:02,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:34:02,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:02,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:34:02,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:02,520 INFO L87 Difference]: Start difference. First operand 4219 states and 5072 transitions. Second operand 3 states. [2020-09-04 16:34:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:02,838 INFO L93 Difference]: Finished difference Result 8366 states and 10078 transitions. [2020-09-04 16:34:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:02,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-04 16:34:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:02,861 INFO L225 Difference]: With dead ends: 8366 [2020-09-04 16:34:02,861 INFO L226 Difference]: Without dead ends: 4297 [2020-09-04 16:34:02,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:02,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2020-09-04 16:34:03,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4255. [2020-09-04 16:34:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-09-04 16:34:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5092 transitions. [2020-09-04 16:34:03,281 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5092 transitions. Word has length 237 [2020-09-04 16:34:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:03,282 INFO L479 AbstractCegarLoop]: Abstraction has 4255 states and 5092 transitions. [2020-09-04 16:34:03,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5092 transitions. [2020-09-04 16:34:03,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-04 16:34:03,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:03,296 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] [2020-09-04 16:34:03,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:34:03,297 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:03,297 INFO L82 PathProgramCache]: Analyzing trace with hash 346316741, now seen corresponding path program 1 times [2020-09-04 16:34:03,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:03,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080322747] [2020-09-04 16:34:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:03,303 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:34:03,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080322747] [2020-09-04 16:34:03,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:03,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:34:03,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412275270] [2020-09-04 16:34:03,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:34:03,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:03,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:34:03,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:03,417 INFO L87 Difference]: Start difference. First operand 4255 states and 5092 transitions. Second operand 3 states. [2020-09-04 16:34:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:03,902 INFO L93 Difference]: Finished difference Result 8455 states and 10149 transitions. [2020-09-04 16:34:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:34:03,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-04 16:34:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:03,940 INFO L225 Difference]: With dead ends: 8455 [2020-09-04 16:34:03,941 INFO L226 Difference]: Without dead ends: 5649 [2020-09-04 16:34:03,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:34:03,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2020-09-04 16:34:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5649. [2020-09-04 16:34:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5649 states. [2020-09-04 16:34:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 6768 transitions. [2020-09-04 16:34:04,479 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 6768 transitions. Word has length 240 [2020-09-04 16:34:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:04,480 INFO L479 AbstractCegarLoop]: Abstraction has 5649 states and 6768 transitions. [2020-09-04 16:34:04,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:34:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 6768 transitions. [2020-09-04 16:34:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-04 16:34:04,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:04,506 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] [2020-09-04 16:34:04,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:34:04,507 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:04,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1652979383, now seen corresponding path program 1 times [2020-09-04 16:34:04,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:04,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744393507] [2020-09-04 16:34:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:04,517 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:34:04,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:34:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:34:04,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:34:04,751 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:34:04,751 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:34:04,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:34:04,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:34:04 BoogieIcfgContainer [2020-09-04 16:34:04,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:34:04,816 INFO L168 Benchmark]: Toolchain (without parser) took 10915.37 ms. Allocated memory was 140.0 MB in the beginning and 528.5 MB in the end (delta: 388.5 MB). Free memory was 103.7 MB in the beginning and 255.4 MB in the end (delta: -151.7 MB). Peak memory consumption was 236.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:04,817 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:34:04,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.59 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 180.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:04,822 INFO L168 Benchmark]: Boogie Preprocessor took 69.77 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 177.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:04,823 INFO L168 Benchmark]: RCFGBuilder took 1023.14 ms. Allocated memory is still 204.5 MB. Free memory was 177.8 MB in the beginning and 109.2 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:04,824 INFO L168 Benchmark]: TraceAbstraction took 9225.64 ms. Allocated memory was 204.5 MB in the beginning and 528.5 MB in the end (delta: 324.0 MB). Free memory was 108.6 MB in the beginning and 255.4 MB in the end (delta: -146.9 MB). Peak memory consumption was 177.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:34:04,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 590.59 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 180.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.77 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 177.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1023.14 ms. Allocated memory is still 204.5 MB. Free memory was 177.8 MB in the beginning and 109.2 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9225.64 ms. Allocated memory was 204.5 MB in the beginning and 528.5 MB in the end (delta: 324.0 MB). Free memory was 108.6 MB in the beginning and 255.4 MB in the end (delta: -146.9 MB). Peak memory consumption was 177.1 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: 9.0s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 3.9s, 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, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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: 2.3s 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...