/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:59:41,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:59:41,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:59:41,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:59:41,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:59:41,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:59:41,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:59:41,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:59:41,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:59:41,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:59:41,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:59:41,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:59:41,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:59:41,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:59:41,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:59:41,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:59:41,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:59:41,929 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 18:59:41,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:59:41,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:59:41,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:59:41,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:59:41,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:59:41,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:59:41,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:59:41,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:59:41,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:59:41,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:59:41,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:59:41,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:59:41,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:59:41,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:59:41,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:59:41,945 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:59:41,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:59:41,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:59:41,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:59:41,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:59:41,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:59:41,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:59:41,947 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:59:42,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:59:42,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:59:42,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:59:42,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:59:42,312 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:59:42,313 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 18:59:42,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc22f3f24/b652dec1098d4c9da0492f06bb03cada/FLAG2f42158fe [2020-08-22 18:59:43,045 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:59:43,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 18:59:43,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc22f3f24/b652dec1098d4c9da0492f06bb03cada/FLAG2f42158fe [2020-08-22 18:59:43,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc22f3f24/b652dec1098d4c9da0492f06bb03cada [2020-08-22 18:59:43,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:59:43,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:59:43,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:59:43,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:59:43,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:59:43,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1855c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43, skipping insertion in model container [2020-08-22 18:59:43,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:59:43,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:59:43,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:59:43,658 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:59:43,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:59:43,898 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:59:43,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43 WrapperNode [2020-08-22 18:59:43,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:59:43,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:59:43,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:59:43,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:59:43,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (1/1) ... [2020-08-22 18:59:43,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:59:43,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:59:43,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:59:43,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:59:43,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (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 18:59:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:59:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:59:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-22 18:59:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:59:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:59:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 18:59:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:59:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 18:59:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 18:59:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-22 18:59:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:59:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:59:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:59:44,273 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:59:45,242 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-22 18:59:45,243 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-22 18:59:45,261 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:59:45,262 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 18:59:45,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:59:45 BoogieIcfgContainer [2020-08-22 18:59:45,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:59:45,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:59:45,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:59:45,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:59:45,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:59:43" (1/3) ... [2020-08-22 18:59:45,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5483ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:59:45, skipping insertion in model container [2020-08-22 18:59:45,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:43" (2/3) ... [2020-08-22 18:59:45,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5483ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:59:45, skipping insertion in model container [2020-08-22 18:59:45,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:59:45" (3/3) ... [2020-08-22 18:59:45,294 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-22 18:59:45,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:59:45,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:59:45,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:59:45,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:59:45,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:59:45,350 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:59:45,350 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:59:45,350 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:59:45,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:59:45,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:59:45,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:59:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-08-22 18:59:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 18:59:45,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:45,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:45,409 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:45,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-08-22 18:59:45,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:45,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342251279] [2020-08-22 18:59:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:45,507 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:45,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:46,037 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 18:59:46,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342251279] [2020-08-22 18:59:46,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:46,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:59:46,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239299728] [2020-08-22 18:59:46,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:59:46,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:59:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:59:46,073 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 6 states. [2020-08-22 18:59:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:46,675 INFO L93 Difference]: Finished difference Result 897 states and 1196 transitions. [2020-08-22 18:59:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:46,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-08-22 18:59:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:46,703 INFO L225 Difference]: With dead ends: 897 [2020-08-22 18:59:46,703 INFO L226 Difference]: Without dead ends: 505 [2020-08-22 18:59:46,711 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 18:59:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-08-22 18:59:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 490. [2020-08-22 18:59:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-08-22 18:59:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 595 transitions. [2020-08-22 18:59:46,903 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 595 transitions. Word has length 161 [2020-08-22 18:59:46,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:46,907 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 595 transitions. [2020-08-22 18:59:46,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:59:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 595 transitions. [2020-08-22 18:59:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-22 18:59:46,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:46,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:46,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:59:46,920 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:46,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1547598949, now seen corresponding path program 1 times [2020-08-22 18:59:46,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:46,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940001382] [2020-08-22 18:59:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:46,928 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:47,157 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 18:59:47,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940001382] [2020-08-22 18:59:47,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:47,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:59:47,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459704178] [2020-08-22 18:59:47,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:59:47,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:47,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:59:47,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:59:47,162 INFO L87 Difference]: Start difference. First operand 490 states and 595 transitions. Second operand 6 states. [2020-08-22 18:59:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:47,634 INFO L93 Difference]: Finished difference Result 937 states and 1192 transitions. [2020-08-22 18:59:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:47,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-08-22 18:59:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:47,643 INFO L225 Difference]: With dead ends: 937 [2020-08-22 18:59:47,643 INFO L226 Difference]: Without dead ends: 573 [2020-08-22 18:59:47,648 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 18:59:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-22 18:59:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2020-08-22 18:59:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-08-22 18:59:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 691 transitions. [2020-08-22 18:59:47,763 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 691 transitions. Word has length 169 [2020-08-22 18:59:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:47,766 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 691 transitions. [2020-08-22 18:59:47,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:59:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 691 transitions. [2020-08-22 18:59:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-22 18:59:47,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:47,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:47,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:59:47,771 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2044458217, now seen corresponding path program 1 times [2020-08-22 18:59:47,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:47,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116558227] [2020-08-22 18:59:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:47,801 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:47,914 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 18:59:47,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116558227] [2020-08-22 18:59:47,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:47,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:47,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131878237] [2020-08-22 18:59:47,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:47,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:47,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:47,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:47,920 INFO L87 Difference]: Start difference. First operand 555 states and 691 transitions. Second operand 3 states. [2020-08-22 18:59:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:48,132 INFO L93 Difference]: Finished difference Result 987 states and 1256 transitions. [2020-08-22 18:59:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:48,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-08-22 18:59:48,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:48,142 INFO L225 Difference]: With dead ends: 987 [2020-08-22 18:59:48,143 INFO L226 Difference]: Without dead ends: 571 [2020-08-22 18:59:48,145 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 18:59:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-22 18:59:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-08-22 18:59:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-22 18:59:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 707 transitions. [2020-08-22 18:59:48,233 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 707 transitions. Word has length 186 [2020-08-22 18:59:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:48,234 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 707 transitions. [2020-08-22 18:59:48,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 707 transitions. [2020-08-22 18:59:48,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-08-22 18:59:48,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:48,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:48,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:59:48,241 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash 570616873, now seen corresponding path program 1 times [2020-08-22 18:59:48,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:48,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673595799] [2020-08-22 18:59:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:48,260 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:48,486 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 18:59:48,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673595799] [2020-08-22 18:59:48,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:48,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:48,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688610844] [2020-08-22 18:59:48,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:48,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:48,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:48,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:48,491 INFO L87 Difference]: Start difference. First operand 571 states and 707 transitions. Second operand 3 states. [2020-08-22 18:59:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:48,830 INFO L93 Difference]: Finished difference Result 1044 states and 1347 transitions. [2020-08-22 18:59:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:48,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-08-22 18:59:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:48,835 INFO L225 Difference]: With dead ends: 1044 [2020-08-22 18:59:48,836 INFO L226 Difference]: Without dead ends: 628 [2020-08-22 18:59:48,838 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 18:59:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-08-22 18:59:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 599. [2020-08-22 18:59:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-22 18:59:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2020-08-22 18:59:48,892 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 187 [2020-08-22 18:59:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:48,892 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2020-08-22 18:59:48,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2020-08-22 18:59:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-22 18:59:48,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:48,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:48,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:59:48,897 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:48,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1436054601, now seen corresponding path program 1 times [2020-08-22 18:59:48,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:48,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158379072] [2020-08-22 18:59:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:48,913 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:48,998 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 18:59:48,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158379072] [2020-08-22 18:59:48,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:48,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:49,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561722439] [2020-08-22 18:59:49,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:49,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:49,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:49,001 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand 3 states. [2020-08-22 18:59:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:49,347 INFO L93 Difference]: Finished difference Result 1084 states and 1380 transitions. [2020-08-22 18:59:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:49,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-08-22 18:59:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:49,352 INFO L225 Difference]: With dead ends: 1084 [2020-08-22 18:59:49,353 INFO L226 Difference]: Without dead ends: 615 [2020-08-22 18:59:49,355 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 18:59:49,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-08-22 18:59:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2020-08-22 18:59:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-08-22 18:59:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 760 transitions. [2020-08-22 18:59:49,410 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 760 transitions. Word has length 195 [2020-08-22 18:59:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:49,411 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 760 transitions. [2020-08-22 18:59:49,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 760 transitions. [2020-08-22 18:59:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 18:59:49,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:49,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:49,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:59:49,416 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:49,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:49,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1774700262, now seen corresponding path program 1 times [2020-08-22 18:59:49,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:49,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740056627] [2020-08-22 18:59:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:49,427 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:49,505 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 18:59:49,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740056627] [2020-08-22 18:59:49,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:49,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:49,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742004338] [2020-08-22 18:59:49,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:49,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:49,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:49,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:49,508 INFO L87 Difference]: Start difference. First operand 613 states and 760 transitions. Second operand 4 states. [2020-08-22 18:59:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:49,906 INFO L93 Difference]: Finished difference Result 1162 states and 1468 transitions. [2020-08-22 18:59:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:49,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-08-22 18:59:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:49,913 INFO L225 Difference]: With dead ends: 1162 [2020-08-22 18:59:49,913 INFO L226 Difference]: Without dead ends: 704 [2020-08-22 18:59:49,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-08-22 18:59:49,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 643. [2020-08-22 18:59:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-08-22 18:59:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 794 transitions. [2020-08-22 18:59:50,002 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 794 transitions. Word has length 200 [2020-08-22 18:59:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:50,003 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 794 transitions. [2020-08-22 18:59:50,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:50,004 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 794 transitions. [2020-08-22 18:59:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-08-22 18:59:50,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:50,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:50,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:59:50,011 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:50,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1774597616, now seen corresponding path program 1 times [2020-08-22 18:59:50,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:50,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235945177] [2020-08-22 18:59:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:50,025 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:50,181 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 18:59:50,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235945177] [2020-08-22 18:59:50,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:50,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:50,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133302095] [2020-08-22 18:59:50,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:50,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:50,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:50,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:50,184 INFO L87 Difference]: Start difference. First operand 643 states and 794 transitions. Second operand 4 states. [2020-08-22 18:59:50,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:50,624 INFO L93 Difference]: Finished difference Result 1198 states and 1507 transitions. [2020-08-22 18:59:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:50,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-08-22 18:59:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:50,632 INFO L225 Difference]: With dead ends: 1198 [2020-08-22 18:59:50,633 INFO L226 Difference]: Without dead ends: 710 [2020-08-22 18:59:50,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-08-22 18:59:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 635. [2020-08-22 18:59:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-08-22 18:59:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 786 transitions. [2020-08-22 18:59:50,725 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 786 transitions. Word has length 201 [2020-08-22 18:59:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:50,726 INFO L479 AbstractCegarLoop]: Abstraction has 635 states and 786 transitions. [2020-08-22 18:59:50,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 786 transitions. [2020-08-22 18:59:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-08-22 18:59:50,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:50,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:50,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:59:50,735 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:50,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-08-22 18:59:50,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:50,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897891207] [2020-08-22 18:59:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:50,746 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:50,853 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 18:59:50,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897891207] [2020-08-22 18:59:50,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:50,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:50,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42276944] [2020-08-22 18:59:50,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:50,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:50,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:50,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:50,857 INFO L87 Difference]: Start difference. First operand 635 states and 786 transitions. Second operand 3 states. [2020-08-22 18:59:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:51,138 INFO L93 Difference]: Finished difference Result 1148 states and 1455 transitions. [2020-08-22 18:59:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:51,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-08-22 18:59:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:51,144 INFO L225 Difference]: With dead ends: 1148 [2020-08-22 18:59:51,144 INFO L226 Difference]: Without dead ends: 668 [2020-08-22 18:59:51,147 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 18:59:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-08-22 18:59:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 657. [2020-08-22 18:59:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-08-22 18:59:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 811 transitions. [2020-08-22 18:59:51,238 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 811 transitions. Word has length 202 [2020-08-22 18:59:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:51,239 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 811 transitions. [2020-08-22 18:59:51,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 811 transitions. [2020-08-22 18:59:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-08-22 18:59:51,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:51,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:51,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:59:51,245 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:51,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1597515948, now seen corresponding path program 1 times [2020-08-22 18:59:51,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:51,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236168579] [2020-08-22 18:59:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:51,258 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:51,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:51,367 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 18:59:51,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236168579] [2020-08-22 18:59:51,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:51,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:51,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478369870] [2020-08-22 18:59:51,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:51,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:51,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:51,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:51,371 INFO L87 Difference]: Start difference. First operand 657 states and 811 transitions. Second operand 3 states. [2020-08-22 18:59:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:51,680 INFO L93 Difference]: Finished difference Result 1640 states and 2094 transitions. [2020-08-22 18:59:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:51,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-08-22 18:59:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:51,689 INFO L225 Difference]: With dead ends: 1640 [2020-08-22 18:59:51,689 INFO L226 Difference]: Without dead ends: 1138 [2020-08-22 18:59:51,692 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 18:59:51,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-08-22 18:59:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1136. [2020-08-22 18:59:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2020-08-22 18:59:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1420 transitions. [2020-08-22 18:59:51,811 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1420 transitions. Word has length 210 [2020-08-22 18:59:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:51,811 INFO L479 AbstractCegarLoop]: Abstraction has 1136 states and 1420 transitions. [2020-08-22 18:59:51,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1420 transitions. [2020-08-22 18:59:51,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-08-22 18:59:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:51,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:51,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:59:51,818 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1924666477, now seen corresponding path program 1 times [2020-08-22 18:59:51,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:51,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864499338] [2020-08-22 18:59:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:51,828 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:51,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:51,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864499338] [2020-08-22 18:59:51,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:51,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:51,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761050333] [2020-08-22 18:59:51,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:51,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:51,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:51,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:51,916 INFO L87 Difference]: Start difference. First operand 1136 states and 1420 transitions. Second operand 4 states. [2020-08-22 18:59:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:52,823 INFO L93 Difference]: Finished difference Result 3282 states and 4260 transitions. [2020-08-22 18:59:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:52,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-08-22 18:59:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:52,839 INFO L225 Difference]: With dead ends: 3282 [2020-08-22 18:59:52,839 INFO L226 Difference]: Without dead ends: 2213 [2020-08-22 18:59:52,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:52,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2020-08-22 18:59:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1172. [2020-08-22 18:59:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-08-22 18:59:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1468 transitions. [2020-08-22 18:59:52,990 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1468 transitions. Word has length 213 [2020-08-22 18:59:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:52,991 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1468 transitions. [2020-08-22 18:59:52,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1468 transitions. [2020-08-22 18:59:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-08-22 18:59:52,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:52,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:52,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:59:52,998 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-08-22 18:59:52,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:52,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921851174] [2020-08-22 18:59:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:53,006 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,109 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 18:59:53,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921851174] [2020-08-22 18:59:53,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:53,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:53,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403553379] [2020-08-22 18:59:53,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:53,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:53,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:53,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:53,113 INFO L87 Difference]: Start difference. First operand 1172 states and 1468 transitions. Second operand 3 states. [2020-08-22 18:59:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:53,541 INFO L93 Difference]: Finished difference Result 2297 states and 2945 transitions. [2020-08-22 18:59:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:53,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-08-22 18:59:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:53,550 INFO L225 Difference]: With dead ends: 2297 [2020-08-22 18:59:53,550 INFO L226 Difference]: Without dead ends: 1280 [2020-08-22 18:59:53,554 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 18:59:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-08-22 18:59:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1268. [2020-08-22 18:59:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-08-22 18:59:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1582 transitions. [2020-08-22 18:59:53,677 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1582 transitions. Word has length 230 [2020-08-22 18:59:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:53,678 INFO L479 AbstractCegarLoop]: Abstraction has 1268 states and 1582 transitions. [2020-08-22 18:59:53,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1582 transitions. [2020-08-22 18:59:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-08-22 18:59:53,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:53,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:53,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 18:59:53,688 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:53,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1305865704, now seen corresponding path program 1 times [2020-08-22 18:59:53,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:53,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848360761] [2020-08-22 18:59:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:53,699 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:53,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848360761] [2020-08-22 18:59:53,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:53,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:53,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54467177] [2020-08-22 18:59:53,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:53,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:53,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:53,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:53,792 INFO L87 Difference]: Start difference. First operand 1268 states and 1582 transitions. Second operand 3 states. [2020-08-22 18:59:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:54,117 INFO L93 Difference]: Finished difference Result 2474 states and 3125 transitions. [2020-08-22 18:59:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:54,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-08-22 18:59:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:54,127 INFO L225 Difference]: With dead ends: 2474 [2020-08-22 18:59:54,127 INFO L226 Difference]: Without dead ends: 1361 [2020-08-22 18:59:54,131 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 18:59:54,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-22 18:59:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1330. [2020-08-22 18:59:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-08-22 18:59:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1656 transitions. [2020-08-22 18:59:54,342 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1656 transitions. Word has length 230 [2020-08-22 18:59:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:54,343 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1656 transitions. [2020-08-22 18:59:54,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1656 transitions. [2020-08-22 18:59:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-08-22 18:59:54,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:54,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:54,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 18:59:54,353 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:54,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1647539560, now seen corresponding path program 1 times [2020-08-22 18:59:54,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:54,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903456213] [2020-08-22 18:59:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:54,364 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:54,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:54,491 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 18:59:54,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903456213] [2020-08-22 18:59:54,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:54,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:54,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30204150] [2020-08-22 18:59:54,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:54,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:54,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:54,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:54,496 INFO L87 Difference]: Start difference. First operand 1330 states and 1656 transitions. Second operand 3 states. [2020-08-22 18:59:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:54,949 INFO L93 Difference]: Finished difference Result 3083 states and 3902 transitions. [2020-08-22 18:59:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:54,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-08-22 18:59:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:54,964 INFO L225 Difference]: With dead ends: 3083 [2020-08-22 18:59:54,964 INFO L226 Difference]: Without dead ends: 1908 [2020-08-22 18:59:54,969 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 18:59:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-08-22 18:59:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2020-08-22 18:59:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2020-08-22 18:59:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2384 transitions. [2020-08-22 18:59:55,171 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2384 transitions. Word has length 238 [2020-08-22 18:59:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:55,172 INFO L479 AbstractCegarLoop]: Abstraction has 1906 states and 2384 transitions. [2020-08-22 18:59:55,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2384 transitions. [2020-08-22 18:59:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-22 18:59:55,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:55,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:55,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 18:59:55,180 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1847120940, now seen corresponding path program 1 times [2020-08-22 18:59:55,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:55,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135354039] [2020-08-22 18:59:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:55,189 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:55,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:55,377 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 18:59:55,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135354039] [2020-08-22 18:59:55,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:55,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:55,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083466035] [2020-08-22 18:59:55,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:55,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:55,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:55,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:55,380 INFO L87 Difference]: Start difference. First operand 1906 states and 2384 transitions. Second operand 3 states. [2020-08-22 18:59:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:55,692 INFO L93 Difference]: Finished difference Result 3622 states and 4566 transitions. [2020-08-22 18:59:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:55,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-08-22 18:59:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:55,704 INFO L225 Difference]: With dead ends: 3622 [2020-08-22 18:59:55,704 INFO L226 Difference]: Without dead ends: 1871 [2020-08-22 18:59:55,711 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 18:59:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-08-22 18:59:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1869. [2020-08-22 18:59:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2020-08-22 18:59:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2338 transitions. [2020-08-22 18:59:55,887 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2338 transitions. Word has length 240 [2020-08-22 18:59:55,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:55,887 INFO L479 AbstractCegarLoop]: Abstraction has 1869 states and 2338 transitions. [2020-08-22 18:59:55,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2338 transitions. [2020-08-22 18:59:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-22 18:59:55,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:55,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:55,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 18:59:55,895 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash 400073983, now seen corresponding path program 1 times [2020-08-22 18:59:55,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:55,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803683314] [2020-08-22 18:59:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:55,905 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:55,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:56,003 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 18:59:56,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803683314] [2020-08-22 18:59:56,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:56,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:56,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114736733] [2020-08-22 18:59:56,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:56,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:56,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:56,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:56,006 INFO L87 Difference]: Start difference. First operand 1869 states and 2338 transitions. Second operand 4 states. [2020-08-22 18:59:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:56,815 INFO L93 Difference]: Finished difference Result 5375 states and 6855 transitions. [2020-08-22 18:59:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:56,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-08-22 18:59:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:56,838 INFO L225 Difference]: With dead ends: 5375 [2020-08-22 18:59:56,838 INFO L226 Difference]: Without dead ends: 3661 [2020-08-22 18:59:56,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:56,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2020-08-22 18:59:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 1878. [2020-08-22 18:59:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-08-22 18:59:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2347 transitions. [2020-08-22 18:59:57,054 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2347 transitions. Word has length 241 [2020-08-22 18:59:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:57,054 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2347 transitions. [2020-08-22 18:59:57,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:57,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2347 transitions. [2020-08-22 18:59:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-22 18:59:57,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:57,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:57,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 18:59:57,062 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:57,063 INFO L82 PathProgramCache]: Analyzing trace with hash -255766369, now seen corresponding path program 1 times [2020-08-22 18:59:57,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:57,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412482869] [2020-08-22 18:59:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:57,073 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:57,169 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 18:59:57,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412482869] [2020-08-22 18:59:57,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:57,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:57,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939663449] [2020-08-22 18:59:57,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:57,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:57,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:57,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:57,172 INFO L87 Difference]: Start difference. First operand 1878 states and 2347 transitions. Second operand 4 states. [2020-08-22 18:59:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:58,064 INFO L93 Difference]: Finished difference Result 5427 states and 6873 transitions. [2020-08-22 18:59:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:58,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-08-22 18:59:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:58,087 INFO L225 Difference]: With dead ends: 5427 [2020-08-22 18:59:58,087 INFO L226 Difference]: Without dead ends: 3680 [2020-08-22 18:59:58,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2020-08-22 18:59:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 1918. [2020-08-22 18:59:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-08-22 18:59:58,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2409 transitions. [2020-08-22 18:59:58,318 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2409 transitions. Word has length 241 [2020-08-22 18:59:58,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:58,319 INFO L479 AbstractCegarLoop]: Abstraction has 1918 states and 2409 transitions. [2020-08-22 18:59:58,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:58,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2409 transitions. [2020-08-22 18:59:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-22 18:59:58,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:58,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:58,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 18:59:58,325 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash -460241056, now seen corresponding path program 1 times [2020-08-22 18:59:58,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:58,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822210994] [2020-08-22 18:59:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:58,334 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:58,426 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 18:59:58,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822210994] [2020-08-22 18:59:58,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:58,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:58,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645731412] [2020-08-22 18:59:58,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:58,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:58,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:58,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:58,430 INFO L87 Difference]: Start difference. First operand 1918 states and 2409 transitions. Second operand 4 states. [2020-08-22 18:59:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:59,165 INFO L93 Difference]: Finished difference Result 4553 states and 5817 transitions. [2020-08-22 18:59:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:59,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-08-22 18:59:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:59,182 INFO L225 Difference]: With dead ends: 4553 [2020-08-22 18:59:59,183 INFO L226 Difference]: Without dead ends: 2760 [2020-08-22 18:59:59,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:59:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2020-08-22 18:59:59,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1425. [2020-08-22 18:59:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-08-22 18:59:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1761 transitions. [2020-08-22 18:59:59,423 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1761 transitions. Word has length 244 [2020-08-22 18:59:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:59,424 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 1761 transitions. [2020-08-22 18:59:59,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1761 transitions. [2020-08-22 18:59:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-22 18:59:59,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:59,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:59,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 18:59:59,431 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:59,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1274309676, now seen corresponding path program 1 times [2020-08-22 18:59:59,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:59,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498670318] [2020-08-22 18:59:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:59,442 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:59,562 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 18:59:59,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498670318] [2020-08-22 18:59:59,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:59,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:59,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582402281] [2020-08-22 18:59:59,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:59,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:59,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:59,571 INFO L87 Difference]: Start difference. First operand 1425 states and 1761 transitions. Second operand 3 states. [2020-08-22 18:59:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:59,974 INFO L93 Difference]: Finished difference Result 2821 states and 3513 transitions. [2020-08-22 18:59:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:59,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-08-22 18:59:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:59,988 INFO L225 Difference]: With dead ends: 2821 [2020-08-22 18:59:59,988 INFO L226 Difference]: Without dead ends: 1551 [2020-08-22 18:59:59,993 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 18:59:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2020-08-22 19:00:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1521. [2020-08-22 19:00:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-08-22 19:00:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1869 transitions. [2020-08-22 19:00:00,225 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1869 transitions. Word has length 251 [2020-08-22 19:00:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:00,226 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 1869 transitions. [2020-08-22 19:00:00,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1869 transitions. [2020-08-22 19:00:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-08-22 19:00:00,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:00,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:00,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 19:00:00,233 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1565810676, now seen corresponding path program 1 times [2020-08-22 19:00:00,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:00,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123170208] [2020-08-22 19:00:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:00,244 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:00:00,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123170208] [2020-08-22 19:00:00,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:00,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:00:00,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839572850] [2020-08-22 19:00:00,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:00:00,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:00,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:00:00,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:00:00,439 INFO L87 Difference]: Start difference. First operand 1521 states and 1869 transitions. Second operand 4 states. [2020-08-22 19:00:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:01,214 INFO L93 Difference]: Finished difference Result 4339 states and 5411 transitions. [2020-08-22 19:00:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:00:01,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 259 [2020-08-22 19:00:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:01,230 INFO L225 Difference]: With dead ends: 4339 [2020-08-22 19:00:01,231 INFO L226 Difference]: Without dead ends: 2961 [2020-08-22 19:00:01,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:00:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-08-22 19:00:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1543. [2020-08-22 19:00:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-08-22 19:00:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1901 transitions. [2020-08-22 19:00:01,436 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1901 transitions. Word has length 259 [2020-08-22 19:00:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:01,437 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 1901 transitions. [2020-08-22 19:00:01,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:00:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1901 transitions. [2020-08-22 19:00:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-08-22 19:00:01,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:01,442 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:01,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 19:00:01,442 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1099402533, now seen corresponding path program 1 times [2020-08-22 19:00:01,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:01,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561189883] [2020-08-22 19:00:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:01,453 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:01,545 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 19:00:01,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561189883] [2020-08-22 19:00:01,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:01,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:01,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996956766] [2020-08-22 19:00:01,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:01,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:01,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:01,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:01,548 INFO L87 Difference]: Start difference. First operand 1543 states and 1901 transitions. Second operand 3 states. [2020-08-22 19:00:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:01,881 INFO L93 Difference]: Finished difference Result 3074 states and 3825 transitions. [2020-08-22 19:00:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:01,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-08-22 19:00:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:01,890 INFO L225 Difference]: With dead ends: 3074 [2020-08-22 19:00:01,891 INFO L226 Difference]: Without dead ends: 1686 [2020-08-22 19:00:01,895 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 19:00:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-08-22 19:00:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1609. [2020-08-22 19:00:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-08-22 19:00:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 1979 transitions. [2020-08-22 19:00:02,095 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 1979 transitions. Word has length 263 [2020-08-22 19:00:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:02,096 INFO L479 AbstractCegarLoop]: Abstraction has 1609 states and 1979 transitions. [2020-08-22 19:00:02,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 1979 transitions. [2020-08-22 19:00:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-22 19:00:02,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:02,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:02,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 19:00:02,101 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:02,102 INFO L82 PathProgramCache]: Analyzing trace with hash -962704645, now seen corresponding path program 1 times [2020-08-22 19:00:02,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:02,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898089650] [2020-08-22 19:00:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:02,108 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:02,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:02,211 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 19:00:02,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898089650] [2020-08-22 19:00:02,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:02,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:02,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818984681] [2020-08-22 19:00:02,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:02,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:02,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:02,215 INFO L87 Difference]: Start difference. First operand 1609 states and 1979 transitions. Second operand 3 states. [2020-08-22 19:00:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:02,486 INFO L93 Difference]: Finished difference Result 3095 states and 3839 transitions. [2020-08-22 19:00:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:02,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-08-22 19:00:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:02,513 INFO L225 Difference]: With dead ends: 3095 [2020-08-22 19:00:02,514 INFO L226 Difference]: Without dead ends: 1641 [2020-08-22 19:00:02,521 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 19:00:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2020-08-22 19:00:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1637. [2020-08-22 19:00:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-08-22 19:00:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2011 transitions. [2020-08-22 19:00:02,762 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2011 transitions. Word has length 271 [2020-08-22 19:00:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:02,763 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2011 transitions. [2020-08-22 19:00:02,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2011 transitions. [2020-08-22 19:00:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-08-22 19:00:02,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:02,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:02,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 19:00:02,771 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:02,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1268615101, now seen corresponding path program 1 times [2020-08-22 19:00:02,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:02,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152494730] [2020-08-22 19:00:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:02,779 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:03,039 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 19:00:03,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152494730] [2020-08-22 19:00:03,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:03,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:00:03,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442281839] [2020-08-22 19:00:03,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:00:03,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:03,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:00:03,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:00:03,042 INFO L87 Difference]: Start difference. First operand 1637 states and 2011 transitions. Second operand 4 states. [2020-08-22 19:00:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:03,694 INFO L93 Difference]: Finished difference Result 4705 states and 5841 transitions. [2020-08-22 19:00:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:00:03,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 272 [2020-08-22 19:00:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:03,707 INFO L225 Difference]: With dead ends: 4705 [2020-08-22 19:00:03,708 INFO L226 Difference]: Without dead ends: 3223 [2020-08-22 19:00:03,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:00:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2020-08-22 19:00:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 1643. [2020-08-22 19:00:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2020-08-22 19:00:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2017 transitions. [2020-08-22 19:00:03,908 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2017 transitions. Word has length 272 [2020-08-22 19:00:03,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:03,908 INFO L479 AbstractCegarLoop]: Abstraction has 1643 states and 2017 transitions. [2020-08-22 19:00:03,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:00:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2017 transitions. [2020-08-22 19:00:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-22 19:00:03,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:03,913 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:03,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 19:00:03,913 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash 794458964, now seen corresponding path program 1 times [2020-08-22 19:00:03,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:03,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723332539] [2020-08-22 19:00:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:03,920 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:04,032 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 19:00:04,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723332539] [2020-08-22 19:00:04,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:04,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:04,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060664654] [2020-08-22 19:00:04,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:04,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:04,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:04,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:04,035 INFO L87 Difference]: Start difference. First operand 1643 states and 2017 transitions. Second operand 3 states. [2020-08-22 19:00:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:04,357 INFO L93 Difference]: Finished difference Result 4573 states and 5675 transitions. [2020-08-22 19:00:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:04,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-08-22 19:00:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:04,368 INFO L225 Difference]: With dead ends: 4573 [2020-08-22 19:00:04,368 INFO L226 Difference]: Without dead ends: 3085 [2020-08-22 19:00:04,373 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 19:00:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2020-08-22 19:00:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 1645. [2020-08-22 19:00:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-08-22 19:00:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2019 transitions. [2020-08-22 19:00:04,619 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2019 transitions. Word has length 299 [2020-08-22 19:00:04,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:04,619 INFO L479 AbstractCegarLoop]: Abstraction has 1645 states and 2019 transitions. [2020-08-22 19:00:04,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:04,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2019 transitions. [2020-08-22 19:00:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-22 19:00:04,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:04,624 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:04,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 19:00:04,624 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:04,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1359318092, now seen corresponding path program 1 times [2020-08-22 19:00:04,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:04,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675586669] [2020-08-22 19:00:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:04,632 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:04,750 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 19:00:04,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675586669] [2020-08-22 19:00:04,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:04,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:04,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563750631] [2020-08-22 19:00:04,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:04,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:04,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:04,753 INFO L87 Difference]: Start difference. First operand 1645 states and 2019 transitions. Second operand 3 states. [2020-08-22 19:00:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:05,245 INFO L93 Difference]: Finished difference Result 3276 states and 4059 transitions. [2020-08-22 19:00:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:05,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-08-22 19:00:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:05,251 INFO L225 Difference]: With dead ends: 3276 [2020-08-22 19:00:05,251 INFO L226 Difference]: Without dead ends: 1786 [2020-08-22 19:00:05,257 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 19:00:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-08-22 19:00:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1725. [2020-08-22 19:00:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-08-22 19:00:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2113 transitions. [2020-08-22 19:00:05,539 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2113 transitions. Word has length 299 [2020-08-22 19:00:05,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:05,540 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2113 transitions. [2020-08-22 19:00:05,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2113 transitions. [2020-08-22 19:00:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-22 19:00:05,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:05,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:05,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 19:00:05,543 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:05,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:05,544 INFO L82 PathProgramCache]: Analyzing trace with hash 893866712, now seen corresponding path program 1 times [2020-08-22 19:00:05,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:05,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901436844] [2020-08-22 19:00:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:05,551 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:05,686 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 19:00:05,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901436844] [2020-08-22 19:00:05,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:05,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:00:05,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240382281] [2020-08-22 19:00:05,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:00:05,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:05,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:00:05,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:00:05,689 INFO L87 Difference]: Start difference. First operand 1725 states and 2113 transitions. Second operand 4 states. [2020-08-22 19:00:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:06,142 INFO L93 Difference]: Finished difference Result 3667 states and 4517 transitions. [2020-08-22 19:00:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:00:06,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2020-08-22 19:00:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:06,148 INFO L225 Difference]: With dead ends: 3667 [2020-08-22 19:00:06,148 INFO L226 Difference]: Without dead ends: 1993 [2020-08-22 19:00:06,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:00:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-08-22 19:00:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1951. [2020-08-22 19:00:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-08-22 19:00:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2383 transitions. [2020-08-22 19:00:06,485 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2383 transitions. Word has length 302 [2020-08-22 19:00:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:06,486 INFO L479 AbstractCegarLoop]: Abstraction has 1951 states and 2383 transitions. [2020-08-22 19:00:06,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:00:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2383 transitions. [2020-08-22 19:00:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-08-22 19:00:06,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:06,491 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:06,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 19:00:06,492 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash -444397713, now seen corresponding path program 1 times [2020-08-22 19:00:06,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:06,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113200081] [2020-08-22 19:00:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:06,500 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:06,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:06,630 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 19:00:06,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113200081] [2020-08-22 19:00:06,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:06,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:00:06,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359731016] [2020-08-22 19:00:06,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:00:06,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:06,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:00:06,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:00:06,633 INFO L87 Difference]: Start difference. First operand 1951 states and 2383 transitions. Second operand 4 states. [2020-08-22 19:00:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:07,233 INFO L93 Difference]: Finished difference Result 4774 states and 5863 transitions. [2020-08-22 19:00:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:00:07,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-08-22 19:00:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:07,243 INFO L225 Difference]: With dead ends: 4774 [2020-08-22 19:00:07,243 INFO L226 Difference]: Without dead ends: 2886 [2020-08-22 19:00:07,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:00:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-08-22 19:00:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2374. [2020-08-22 19:00:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-08-22 19:00:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 2904 transitions. [2020-08-22 19:00:07,637 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 2904 transitions. Word has length 306 [2020-08-22 19:00:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:07,638 INFO L479 AbstractCegarLoop]: Abstraction has 2374 states and 2904 transitions. [2020-08-22 19:00:07,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:00:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 2904 transitions. [2020-08-22 19:00:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-22 19:00:07,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:07,644 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:07,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 19:00:07,645 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:07,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1267878306, now seen corresponding path program 1 times [2020-08-22 19:00:07,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:07,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708182685] [2020-08-22 19:00:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:07,651 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:07,770 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 19:00:07,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708182685] [2020-08-22 19:00:07,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:07,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:00:07,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786681303] [2020-08-22 19:00:07,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:00:07,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:07,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:00:07,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:00:07,772 INFO L87 Difference]: Start difference. First operand 2374 states and 2904 transitions. Second operand 4 states. [2020-08-22 19:00:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:08,789 INFO L93 Difference]: Finished difference Result 6751 states and 8361 transitions. [2020-08-22 19:00:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:00:08,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-08-22 19:00:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:08,799 INFO L225 Difference]: With dead ends: 6751 [2020-08-22 19:00:08,800 INFO L226 Difference]: Without dead ends: 4506 [2020-08-22 19:00:08,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:00:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2020-08-22 19:00:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2422. [2020-08-22 19:00:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-08-22 19:00:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 2964 transitions. [2020-08-22 19:00:09,141 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 2964 transitions. Word has length 309 [2020-08-22 19:00:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:09,141 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 2964 transitions. [2020-08-22 19:00:09,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:00:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 2964 transitions. [2020-08-22 19:00:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-08-22 19:00:09,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:09,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:09,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 19:00:09,147 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:09,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:09,148 INFO L82 PathProgramCache]: Analyzing trace with hash -747447560, now seen corresponding path program 1 times [2020-08-22 19:00:09,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:09,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88230550] [2020-08-22 19:00:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:09,155 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:09,286 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 19:00:09,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88230550] [2020-08-22 19:00:09,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:09,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:00:09,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210271989] [2020-08-22 19:00:09,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:00:09,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:09,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:00:09,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:00:09,289 INFO L87 Difference]: Start difference. First operand 2422 states and 2964 transitions. Second operand 5 states. [2020-08-22 19:00:11,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:11,039 INFO L93 Difference]: Finished difference Result 6975 states and 8625 transitions. [2020-08-22 19:00:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 19:00:11,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-08-22 19:00:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:11,051 INFO L225 Difference]: With dead ends: 6975 [2020-08-22 19:00:11,051 INFO L226 Difference]: Without dead ends: 4604 [2020-08-22 19:00:11,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:00:11,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2020-08-22 19:00:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 2356. [2020-08-22 19:00:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2356 states. [2020-08-22 19:00:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 2892 transitions. [2020-08-22 19:00:11,641 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 2892 transitions. Word has length 310 [2020-08-22 19:00:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:11,642 INFO L479 AbstractCegarLoop]: Abstraction has 2356 states and 2892 transitions. [2020-08-22 19:00:11,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:00:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 2892 transitions. [2020-08-22 19:00:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-08-22 19:00:11,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:11,648 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:11,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 19:00:11,648 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:11,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1909019013, now seen corresponding path program 1 times [2020-08-22 19:00:11,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:11,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904836010] [2020-08-22 19:00:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:11,656 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:11,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:11,825 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 19:00:11,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904836010] [2020-08-22 19:00:11,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:11,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:00:11,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697125706] [2020-08-22 19:00:11,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:00:11,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:00:11,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:00:11,830 INFO L87 Difference]: Start difference. First operand 2356 states and 2892 transitions. Second operand 4 states. [2020-08-22 19:00:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:12,605 INFO L93 Difference]: Finished difference Result 4839 states and 5953 transitions. [2020-08-22 19:00:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:00:12,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-08-22 19:00:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:12,609 INFO L225 Difference]: With dead ends: 4839 [2020-08-22 19:00:12,610 INFO L226 Difference]: Without dead ends: 2638 [2020-08-22 19:00:12,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:00:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2020-08-22 19:00:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2182. [2020-08-22 19:00:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2020-08-22 19:00:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2683 transitions. [2020-08-22 19:00:12,912 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2683 transitions. Word has length 316 [2020-08-22 19:00:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:12,913 INFO L479 AbstractCegarLoop]: Abstraction has 2182 states and 2683 transitions. [2020-08-22 19:00:12,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:00:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2683 transitions. [2020-08-22 19:00:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-08-22 19:00:12,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:12,919 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:12,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 19:00:12,919 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:12,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1455323989, now seen corresponding path program 1 times [2020-08-22 19:00:12,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:12,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995742294] [2020-08-22 19:00:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:12,925 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:13,061 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 19:00:13,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995742294] [2020-08-22 19:00:13,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:13,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:13,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832413098] [2020-08-22 19:00:13,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:13,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:13,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:13,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:13,067 INFO L87 Difference]: Start difference. First operand 2182 states and 2683 transitions. Second operand 3 states. [2020-08-22 19:00:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:13,681 INFO L93 Difference]: Finished difference Result 6128 states and 7596 transitions. [2020-08-22 19:00:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:13,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-08-22 19:00:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:13,689 INFO L225 Difference]: With dead ends: 6128 [2020-08-22 19:00:13,689 INFO L226 Difference]: Without dead ends: 4101 [2020-08-22 19:00:13,694 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 19:00:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2020-08-22 19:00:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4097. [2020-08-22 19:00:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4097 states. [2020-08-22 19:00:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 5063 transitions. [2020-08-22 19:00:14,250 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 5063 transitions. Word has length 328 [2020-08-22 19:00:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:14,251 INFO L479 AbstractCegarLoop]: Abstraction has 4097 states and 5063 transitions. [2020-08-22 19:00:14,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 5063 transitions. [2020-08-22 19:00:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-08-22 19:00:14,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:14,256 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:14,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 19:00:14,257 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:14,257 INFO L82 PathProgramCache]: Analyzing trace with hash 837433633, now seen corresponding path program 1 times [2020-08-22 19:00:14,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:14,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272808379] [2020-08-22 19:00:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:14,263 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:14,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:14,394 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 19:00:14,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272808379] [2020-08-22 19:00:14,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:14,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:14,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013965025] [2020-08-22 19:00:14,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:14,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:14,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:14,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:14,397 INFO L87 Difference]: Start difference. First operand 4097 states and 5063 transitions. Second operand 3 states. [2020-08-22 19:00:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:15,148 INFO L93 Difference]: Finished difference Result 8155 states and 10119 transitions. [2020-08-22 19:00:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:15,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-08-22 19:00:15,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:15,156 INFO L225 Difference]: With dead ends: 8155 [2020-08-22 19:00:15,156 INFO L226 Difference]: Without dead ends: 4213 [2020-08-22 19:00:15,164 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 19:00:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2020-08-22 19:00:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4189. [2020-08-22 19:00:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4189 states. [2020-08-22 19:00:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 5155 transitions. [2020-08-22 19:00:15,773 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 5155 transitions. Word has length 329 [2020-08-22 19:00:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:15,773 INFO L479 AbstractCegarLoop]: Abstraction has 4189 states and 5155 transitions. [2020-08-22 19:00:15,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 5155 transitions. [2020-08-22 19:00:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-22 19:00:15,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:15,777 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:15,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 19:00:15,778 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1972793019, now seen corresponding path program 1 times [2020-08-22 19:00:15,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:15,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475772395] [2020-08-22 19:00:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:15,788 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:00:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:00:16,049 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 19:00:16,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475772395] [2020-08-22 19:00:16,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:00:16,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:00:16,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027611472] [2020-08-22 19:00:16,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:00:16,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:00:16,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:00:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:00:16,061 INFO L87 Difference]: Start difference. First operand 4189 states and 5155 transitions. Second operand 3 states. [2020-08-22 19:00:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:18,368 INFO L93 Difference]: Finished difference Result 12117 states and 14971 transitions. [2020-08-22 19:00:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:00:18,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-08-22 19:00:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:18,382 INFO L225 Difference]: With dead ends: 12117 [2020-08-22 19:00:18,382 INFO L226 Difference]: Without dead ends: 8083 [2020-08-22 19:00:18,395 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 19:00:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8083 states. [2020-08-22 19:00:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8083 to 4185. [2020-08-22 19:00:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4185 states. [2020-08-22 19:00:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 5147 transitions. [2020-08-22 19:00:19,046 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 5147 transitions. Word has length 331 [2020-08-22 19:00:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:19,046 INFO L479 AbstractCegarLoop]: Abstraction has 4185 states and 5147 transitions. [2020-08-22 19:00:19,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:00:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 5147 transitions. [2020-08-22 19:00:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-08-22 19:00:19,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:19,051 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:00:19,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 19:00:19,051 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash -522042299, now seen corresponding path program 1 times [2020-08-22 19:00:19,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:19,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320921505] [2020-08-22 19:00:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:19,060 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:00:19,100 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:00:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:00:19,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:00:19,326 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:00:19,327 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:00:19,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 19:00:19,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:00:19 BoogieIcfgContainer [2020-08-22 19:00:19,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:00:19,414 INFO L168 Benchmark]: Toolchain (without parser) took 36143.19 ms. Allocated memory was 143.1 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 99.2 MB in the beginning and 209.2 MB in the end (delta: -110.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,418 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.69 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 99.0 MB in the beginning and 175.8 MB in the end (delta: -76.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,419 INFO L168 Benchmark]: Boogie Preprocessor took 72.19 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 172.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,420 INFO L168 Benchmark]: RCFGBuilder took 1305.82 ms. Allocated memory is still 201.3 MB. Free memory was 172.6 MB in the beginning and 94.7 MB in the end (delta: 77.9 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,420 INFO L168 Benchmark]: TraceAbstraction took 34131.61 ms. Allocated memory was 201.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 93.9 MB in the beginning and 209.2 MB in the end (delta: -115.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-08-22 19:00:19,425 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.69 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 99.0 MB in the beginning and 175.8 MB in the end (delta: -76.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.19 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 172.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1305.82 ms. Allocated memory is still 201.3 MB. Free memory was 172.6 MB in the beginning and 94.7 MB in the end (delta: 77.9 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34131.61 ms. Allocated memory was 201.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 93.9 MB in the beginning and 209.2 MB in the end (delta: -115.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 471 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.9s, OverallIterations: 33, TraceHistogramMax: 6, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20438 SDtfs, 12801 SDslu, 22036 SDs, 0 SdLazy, 5119 SolverSat, 726 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4189occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.7s AutomataMinimizationTime, 32 MinimizatonAttempts, 20059 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...