/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:32:21,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:32:21,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:32:21,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:32:21,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:32:21,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:32:21,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:32:21,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:32:21,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:32:21,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:32:21,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:32:21,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:32:21,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:32:21,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:32:21,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:32:21,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:32:21,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:32:21,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:32:21,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:32:21,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:32:21,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:32:21,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:32:21,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:32:21,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:32:21,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:32:21,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:32:21,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:32:21,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:32:21,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:32:21,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:32:21,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:32:21,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:32:21,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:32:21,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:32:21,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:32:21,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:32:21,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:32:21,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:32:21,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:32:21,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:32:21,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:32:21,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:32:21,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:32:21,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:32:21,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:32:21,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:32:21,820 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:32:21,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:32:21,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:32:21,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:32:21,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:32:21,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:32:21,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:32:21,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:32:21,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:32:21,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:32:21,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:32:21,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:32:21,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:32:21,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:32:21,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:32:21,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:32:21,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:32:21,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:32:21,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:32:21,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:32:21,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:32:21,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:32:21,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:32:21,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:32:21,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:32:21,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:32:22,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:32:22,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:32:22,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:32:22,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:32:22,163 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:32:22,164 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 16:32:22,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4feb94ae1/cb506ba38b7a4731927a764ae004ee15/FLAG699d1b639 [2020-08-21 16:32:22,703 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:32:22,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 16:32:22,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4feb94ae1/cb506ba38b7a4731927a764ae004ee15/FLAG699d1b639 [2020-08-21 16:32:23,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4feb94ae1/cb506ba38b7a4731927a764ae004ee15 [2020-08-21 16:32:23,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:32:23,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:32:23,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:32:23,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:32:23,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:32:23,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1437a417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23, skipping insertion in model container [2020-08-21 16:32:23,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:32:23,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:32:23,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:32:23,564 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:32:23,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:32:23,650 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:32:23,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23 WrapperNode [2020-08-21 16:32:23,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:32:23,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:32:23,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:32:23,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:32:23,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... [2020-08-21 16:32:23,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:32:23,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:32:23,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:32:23,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:32:23,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:32:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:32:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:32:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-21 16:32:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:32:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:32:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 16:32:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:32:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-21 16:32:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 16:32:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-21 16:32:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:32:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:32:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:32:23,998 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-21 16:32:24,577 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-21 16:32:24,577 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-21 16:32:24,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:32:24,589 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 16:32:24,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:32:24 BoogieIcfgContainer [2020-08-21 16:32:24,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:32:24,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:32:24,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:32:24,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:32:24,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:32:23" (1/3) ... [2020-08-21 16:32:24,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181dcd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:32:24, skipping insertion in model container [2020-08-21 16:32:24,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:32:23" (2/3) ... [2020-08-21 16:32:24,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181dcd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:32:24, skipping insertion in model container [2020-08-21 16:32:24,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:32:24" (3/3) ... [2020-08-21 16:32:24,604 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-21 16:32:24,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:32:24,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:32:24,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:32:24,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:32:24,668 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:32:24,668 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:32:24,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:32:24,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:32:24,669 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:32:24,669 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:32:24,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:32:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 16:32:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 16:32:24,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:24,702 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] [2020-08-21 16:32:24,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:24,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-21 16:32:24,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:24,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713979774] [2020-08-21 16:32:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:25,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713979774] [2020-08-21 16:32:25,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:25,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:25,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542913298] [2020-08-21 16:32:25,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:25,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:25,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:25,063 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-21 16:32:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:25,442 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-21 16:32:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:25,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-21 16:32:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:25,458 INFO L225 Difference]: With dead ends: 362 [2020-08-21 16:32:25,458 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 16:32:25,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 16:32:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-21 16:32:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-21 16:32:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-21 16:32:25,525 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-21 16:32:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:25,526 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-21 16:32:25,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-21 16:32:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 16:32:25,528 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:25,529 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] [2020-08-21 16:32:25,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:32:25,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-21 16:32:25,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:25,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151306722] [2020-08-21 16:32:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:25,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151306722] [2020-08-21 16:32:25,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:25,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:25,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81239804] [2020-08-21 16:32:25,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:25,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:25,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:25,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:25,679 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-21 16:32:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:26,015 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-21 16:32:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:26,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 16:32:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:26,019 INFO L225 Difference]: With dead ends: 363 [2020-08-21 16:32:26,019 INFO L226 Difference]: Without dead ends: 199 [2020-08-21 16:32:26,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-21 16:32:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-21 16:32:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-21 16:32:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-21 16:32:26,040 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-21 16:32:26,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:26,041 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-21 16:32:26,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-21 16:32:26,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 16:32:26,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:26,043 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] [2020-08-21 16:32:26,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:32:26,043 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:26,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-21 16:32:26,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:26,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795210381] [2020-08-21 16:32:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:26,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795210381] [2020-08-21 16:32:26,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:26,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:26,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755003148] [2020-08-21 16:32:26,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:26,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:26,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:26,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:26,124 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-21 16:32:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:26,399 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-21 16:32:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:26,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 16:32:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:26,404 INFO L225 Difference]: With dead ends: 393 [2020-08-21 16:32:26,404 INFO L226 Difference]: Without dead ends: 207 [2020-08-21 16:32:26,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-21 16:32:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-21 16:32:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-21 16:32:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-21 16:32:26,447 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-21 16:32:26,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:26,448 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-21 16:32:26,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-21 16:32:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 16:32:26,450 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:26,450 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] [2020-08-21 16:32:26,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:32:26,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:26,451 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-21 16:32:26,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:26,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345535043] [2020-08-21 16:32:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:26,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:26,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345535043] [2020-08-21 16:32:26,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:26,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:26,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359196472] [2020-08-21 16:32:26,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:26,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:26,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:26,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:26,517 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-21 16:32:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:26,746 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-21 16:32:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:26,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 16:32:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:26,749 INFO L225 Difference]: With dead ends: 398 [2020-08-21 16:32:26,749 INFO L226 Difference]: Without dead ends: 206 [2020-08-21 16:32:26,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-21 16:32:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-21 16:32:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 16:32:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-21 16:32:26,763 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-21 16:32:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:26,763 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-21 16:32:26,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-21 16:32:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 16:32:26,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:26,765 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] [2020-08-21 16:32:26,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:32:26,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:26,766 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-21 16:32:26,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:26,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361487339] [2020-08-21 16:32:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:26,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361487339] [2020-08-21 16:32:26,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:26,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:26,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648045404] [2020-08-21 16:32:26,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:26,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:26,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:26,840 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-21 16:32:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:27,027 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-21 16:32:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:27,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-21 16:32:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:27,030 INFO L225 Difference]: With dead ends: 409 [2020-08-21 16:32:27,030 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 16:32:27,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 16:32:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 16:32:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 16:32:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-21 16:32:27,048 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-21 16:32:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:27,050 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-21 16:32:27,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-21 16:32:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 16:32:27,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:27,057 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] [2020-08-21 16:32:27,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:32:27,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:27,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-21 16:32:27,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:27,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924119602] [2020-08-21 16:32:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:27,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:27,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924119602] [2020-08-21 16:32:27,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:27,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:27,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204573124] [2020-08-21 16:32:27,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:27,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:27,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:27,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:27,179 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-21 16:32:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:27,386 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-21 16:32:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:27,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-21 16:32:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:27,388 INFO L225 Difference]: With dead ends: 409 [2020-08-21 16:32:27,389 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 16:32:27,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 16:32:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 16:32:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 16:32:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-21 16:32:27,401 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-21 16:32:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:27,401 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-21 16:32:27,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-21 16:32:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 16:32:27,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:27,403 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] [2020-08-21 16:32:27,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:32:27,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:27,404 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-21 16:32:27,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:27,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634259334] [2020-08-21 16:32:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:27,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634259334] [2020-08-21 16:32:27,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:27,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:27,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336172919] [2020-08-21 16:32:27,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:27,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:27,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:27,456 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-21 16:32:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:27,651 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-21 16:32:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:27,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-21 16:32:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:27,653 INFO L225 Difference]: With dead ends: 409 [2020-08-21 16:32:27,653 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 16:32:27,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:27,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 16:32:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 16:32:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 16:32:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-21 16:32:27,666 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-21 16:32:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:27,666 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-21 16:32:27,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-21 16:32:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 16:32:27,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:27,667 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] [2020-08-21 16:32:27,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:32:27,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:27,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:27,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-21 16:32:27,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:27,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130741372] [2020-08-21 16:32:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:27,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130741372] [2020-08-21 16:32:27,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:27,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:32:27,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567965988] [2020-08-21 16:32:27,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:32:27,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:27,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:32:27,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:27,756 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-21 16:32:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:28,121 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-21 16:32:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:32:28,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-21 16:32:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:28,125 INFO L225 Difference]: With dead ends: 605 [2020-08-21 16:32:28,125 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 16:32:28,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:32:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 16:32:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-21 16:32:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-21 16:32:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-21 16:32:28,150 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-21 16:32:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:28,150 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-21 16:32:28,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:32:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-21 16:32:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 16:32:28,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:28,152 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] [2020-08-21 16:32:28,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:32:28,152 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-21 16:32:28,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:28,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858779793] [2020-08-21 16:32:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:28,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858779793] [2020-08-21 16:32:28,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:28,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:28,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226625639] [2020-08-21 16:32:28,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:28,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:28,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:28,212 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-21 16:32:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:28,506 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-21 16:32:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:28,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-21 16:32:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:28,510 INFO L225 Difference]: With dead ends: 847 [2020-08-21 16:32:28,511 INFO L226 Difference]: Without dead ends: 472 [2020-08-21 16:32:28,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-21 16:32:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-21 16:32:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-21 16:32:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-21 16:32:28,542 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-21 16:32:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:28,543 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-21 16:32:28,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-21 16:32:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-21 16:32:28,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:28,545 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] [2020-08-21 16:32:28,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:32:28,545 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:28,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:28,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-21 16:32:28,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:28,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146160985] [2020-08-21 16:32:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:28,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146160985] [2020-08-21 16:32:28,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:28,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:28,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018122164] [2020-08-21 16:32:28,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:28,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:28,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:28,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:28,604 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-21 16:32:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:28,864 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-21 16:32:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:28,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-21 16:32:28,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:28,869 INFO L225 Difference]: With dead ends: 936 [2020-08-21 16:32:28,869 INFO L226 Difference]: Without dead ends: 495 [2020-08-21 16:32:28,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-21 16:32:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-21 16:32:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-21 16:32:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-21 16:32:28,902 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-21 16:32:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:28,902 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-21 16:32:28,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-21 16:32:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 16:32:28,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:28,905 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:28,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:32:28,905 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:28,906 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-21 16:32:28,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:28,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252315861] [2020-08-21 16:32:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:28,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 16:32:28,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252315861] [2020-08-21 16:32:28,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:28,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:28,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909655158] [2020-08-21 16:32:28,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:28,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:28,990 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-21 16:32:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:29,196 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-21 16:32:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:29,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-21 16:32:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:29,200 INFO L225 Difference]: With dead ends: 993 [2020-08-21 16:32:29,201 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 16:32:29,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 16:32:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 16:32:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 16:32:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-21 16:32:29,228 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-21 16:32:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:29,229 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-21 16:32:29,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-21 16:32:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 16:32:29,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:29,231 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:29,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:32:29,231 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:29,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:29,232 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-21 16:32:29,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:29,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077708380] [2020-08-21 16:32:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 16:32:29,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077708380] [2020-08-21 16:32:29,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:29,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:29,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281719630] [2020-08-21 16:32:29,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:29,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:29,297 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-21 16:32:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:29,539 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-21 16:32:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:29,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 16:32:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:29,543 INFO L225 Difference]: With dead ends: 1027 [2020-08-21 16:32:29,543 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 16:32:29,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 16:32:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 16:32:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 16:32:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-21 16:32:29,572 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-21 16:32:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:29,572 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-21 16:32:29,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-21 16:32:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 16:32:29,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:29,574 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:29,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:32:29,574 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:29,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:29,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-21 16:32:29,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:29,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023648925] [2020-08-21 16:32:29,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 16:32:29,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023648925] [2020-08-21 16:32:29,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:29,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:29,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733396246] [2020-08-21 16:32:29,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:29,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:29,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:29,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:29,635 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-21 16:32:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:29,919 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-21 16:32:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:29,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 16:32:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:29,924 INFO L225 Difference]: With dead ends: 1074 [2020-08-21 16:32:29,925 INFO L226 Difference]: Without dead ends: 576 [2020-08-21 16:32:29,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:29,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-21 16:32:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-21 16:32:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-21 16:32:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-21 16:32:29,963 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-21 16:32:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:29,963 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-21 16:32:29,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-21 16:32:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 16:32:29,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:29,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-08-21 16:32:29,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 16:32:29,966 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:29,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-21 16:32:29,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:29,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455204909] [2020-08-21 16:32:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:30,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:30,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455204909] [2020-08-21 16:32:30,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:30,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:30,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866220468] [2020-08-21 16:32:30,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:30,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:30,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:30,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:30,042 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-21 16:32:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:30,290 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-21 16:32:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:30,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-21 16:32:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:30,294 INFO L225 Difference]: With dead ends: 1184 [2020-08-21 16:32:30,295 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 16:32:30,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 16:32:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 16:32:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 16:32:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-21 16:32:30,326 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-21 16:32:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:30,326 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-21 16:32:30,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-21 16:32:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-21 16:32:30,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:30,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 16:32:30,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 16:32:30,328 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-21 16:32:30,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:30,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917986183] [2020-08-21 16:32:30,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:30,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:32:30,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917986183] [2020-08-21 16:32:30,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:30,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:30,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764914530] [2020-08-21 16:32:30,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:30,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:30,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:30,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:30,379 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-21 16:32:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:30,669 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-21 16:32:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:30,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-21 16:32:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:30,673 INFO L225 Difference]: With dead ends: 1227 [2020-08-21 16:32:30,673 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 16:32:30,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 16:32:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 16:32:30,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 16:32:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-21 16:32:30,706 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-21 16:32:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:30,707 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-21 16:32:30,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-21 16:32:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:32:30,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:30,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 16:32:30,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 16:32:30,709 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:30,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:30,710 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-21 16:32:30,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:30,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014466170] [2020-08-21 16:32:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 16:32:30,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014466170] [2020-08-21 16:32:30,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:30,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:30,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877376506] [2020-08-21 16:32:30,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:30,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:30,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:30,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:30,784 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-21 16:32:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:31,083 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-21 16:32:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:31,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-21 16:32:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:31,088 INFO L225 Difference]: With dead ends: 1223 [2020-08-21 16:32:31,088 INFO L226 Difference]: Without dead ends: 619 [2020-08-21 16:32:31,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-21 16:32:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-21 16:32:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 16:32:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-21 16:32:31,125 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-21 16:32:31,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:31,125 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-21 16:32:31,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:31,125 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-21 16:32:31,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 16:32:31,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:31,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:32:31,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 16:32:31,128 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-21 16:32:31,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:31,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030939628] [2020-08-21 16:32:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 16:32:31,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030939628] [2020-08-21 16:32:31,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:31,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:31,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132384959] [2020-08-21 16:32:31,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:31,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:31,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:31,199 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-21 16:32:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:31,423 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-21 16:32:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:31,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-21 16:32:31,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:31,429 INFO L225 Difference]: With dead ends: 1281 [2020-08-21 16:32:31,429 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 16:32:31,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 16:32:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 16:32:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 16:32:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-21 16:32:31,502 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-21 16:32:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:31,502 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-21 16:32:31,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-21 16:32:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 16:32:31,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:31,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 16:32:31,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 16:32:31,507 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:31,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:31,507 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-21 16:32:31,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:31,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058007403] [2020-08-21 16:32:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:31,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 16:32:31,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058007403] [2020-08-21 16:32:31,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:31,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:31,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676741062] [2020-08-21 16:32:31,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:31,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:31,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:31,586 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-21 16:32:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:31,797 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-21 16:32:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:31,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-21 16:32:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:31,802 INFO L225 Difference]: With dead ends: 1313 [2020-08-21 16:32:31,802 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 16:32:31,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 16:32:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 16:32:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 16:32:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-21 16:32:31,839 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-21 16:32:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:31,839 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-21 16:32:31,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-21 16:32:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 16:32:31,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:31,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 16:32:31,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 16:32:31,845 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-21 16:32:31,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:31,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055904914] [2020-08-21 16:32:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 16:32:31,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055904914] [2020-08-21 16:32:31,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:31,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:31,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136077933] [2020-08-21 16:32:31,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:31,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:31,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:31,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:31,911 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-21 16:32:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:32,220 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-21 16:32:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:32,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-21 16:32:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:32,226 INFO L225 Difference]: With dead ends: 1349 [2020-08-21 16:32:32,226 INFO L226 Difference]: Without dead ends: 713 [2020-08-21 16:32:32,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-21 16:32:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-21 16:32:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-21 16:32:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-21 16:32:32,295 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-21 16:32:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:32,296 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-21 16:32:32,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-21 16:32:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 16:32:32,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:32,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 16:32:32,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 16:32:32,300 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:32,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:32,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-21 16:32:32,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:32,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337989812] [2020-08-21 16:32:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 16:32:32,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337989812] [2020-08-21 16:32:32,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:32,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:32,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850154393] [2020-08-21 16:32:32,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:32,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:32,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:32,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:32,400 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-21 16:32:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:32,796 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-21 16:32:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:32,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-21 16:32:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:32,809 INFO L225 Difference]: With dead ends: 1406 [2020-08-21 16:32:32,810 INFO L226 Difference]: Without dead ends: 714 [2020-08-21 16:32:32,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-21 16:32:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-21 16:32:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 16:32:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-21 16:32:32,873 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-21 16:32:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:32,873 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-21 16:32:32,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-21 16:32:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 16:32:32,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:32,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 16:32:32,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 16:32:32,877 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:32,877 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-21 16:32:32,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:32,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810801008] [2020-08-21 16:32:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 16:32:32,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810801008] [2020-08-21 16:32:32,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:32,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:32,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367138485] [2020-08-21 16:32:32,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:32,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:32,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:32,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:32,984 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-21 16:32:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:33,322 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-21 16:32:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:33,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-21 16:32:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:33,327 INFO L225 Difference]: With dead ends: 1438 [2020-08-21 16:32:33,327 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 16:32:33,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 16:32:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 16:32:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 16:32:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-21 16:32:33,371 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-21 16:32:33,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:33,371 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-21 16:32:33,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-21 16:32:33,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-21 16:32:33,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:33,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:32:33,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-21 16:32:33,374 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:33,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:33,375 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-21 16:32:33,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:33,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332253434] [2020-08-21 16:32:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 16:32:33,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332253434] [2020-08-21 16:32:33,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:33,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:33,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615299937] [2020-08-21 16:32:33,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:33,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:33,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:33,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:33,455 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-21 16:32:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:33,723 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-21 16:32:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:33,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-21 16:32:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:33,729 INFO L225 Difference]: With dead ends: 1479 [2020-08-21 16:32:33,730 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 16:32:33,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 16:32:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 16:32:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 16:32:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-21 16:32:33,784 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-21 16:32:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:33,784 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-21 16:32:33,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-21 16:32:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-21 16:32:33,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:33,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-21 16:32:33,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-21 16:32:33,793 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:33,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:33,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-21 16:32:33,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:33,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645710528] [2020-08-21 16:32:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 16:32:33,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645710528] [2020-08-21 16:32:33,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:33,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:33,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854088477] [2020-08-21 16:32:33,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:33,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:33,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:33,893 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-21 16:32:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:34,193 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-21 16:32:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:34,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-21 16:32:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:34,200 INFO L225 Difference]: With dead ends: 1515 [2020-08-21 16:32:34,200 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 16:32:34,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 16:32:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 16:32:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 16:32:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-21 16:32:34,261 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-21 16:32:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:34,262 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-21 16:32:34,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-21 16:32:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 16:32:34,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:34,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-21 16:32:34,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-21 16:32:34,267 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:34,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:34,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-21 16:32:34,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:34,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563147568] [2020-08-21 16:32:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 16:32:34,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563147568] [2020-08-21 16:32:34,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:34,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:34,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075442017] [2020-08-21 16:32:34,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:34,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:34,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:34,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:34,342 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-21 16:32:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:34,593 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-21 16:32:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:34,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-21 16:32:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:34,598 INFO L225 Difference]: With dead ends: 1547 [2020-08-21 16:32:34,598 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 16:32:34,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 16:32:34,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 16:32:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 16:32:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-21 16:32:34,645 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-21 16:32:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:34,646 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-21 16:32:34,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-21 16:32:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-21 16:32:34,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:34,649 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-08-21 16:32:34,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-21 16:32:34,649 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-21 16:32:34,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:34,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799531493] [2020-08-21 16:32:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 16:32:34,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799531493] [2020-08-21 16:32:34,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:34,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:34,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392741532] [2020-08-21 16:32:34,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:34,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:34,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:34,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:34,746 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-21 16:32:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:35,009 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-21 16:32:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:35,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-21 16:32:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:35,015 INFO L225 Difference]: With dead ends: 1573 [2020-08-21 16:32:35,015 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 16:32:35,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 16:32:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 16:32:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 16:32:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-21 16:32:35,072 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-21 16:32:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:35,072 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-21 16:32:35,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-21 16:32:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 16:32:35,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:35,077 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-08-21 16:32:35,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-21 16:32:35,078 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:35,078 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-21 16:32:35,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:35,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641695101] [2020-08-21 16:32:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 16:32:35,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641695101] [2020-08-21 16:32:35,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:35,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:35,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635469481] [2020-08-21 16:32:35,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:35,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:35,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:35,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:35,156 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-21 16:32:35,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:35,392 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-21 16:32:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:35,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-21 16:32:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:35,397 INFO L225 Difference]: With dead ends: 1601 [2020-08-21 16:32:35,398 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 16:32:35,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 16:32:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 16:32:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 16:32:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-21 16:32:35,441 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-21 16:32:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:35,441 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-21 16:32:35,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-21 16:32:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 16:32:35,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:35,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 16:32:35,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-21 16:32:35,445 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:35,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-21 16:32:35,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:35,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759941177] [2020-08-21 16:32:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 16:32:35,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759941177] [2020-08-21 16:32:35,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:35,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:35,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942835376] [2020-08-21 16:32:35,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:35,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:35,522 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-21 16:32:35,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:35,803 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-21 16:32:35,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:35,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-21 16:32:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:35,808 INFO L225 Difference]: With dead ends: 1656 [2020-08-21 16:32:35,808 INFO L226 Difference]: Without dead ends: 866 [2020-08-21 16:32:35,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:35,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-21 16:32:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-21 16:32:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-21 16:32:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-21 16:32:35,855 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-21 16:32:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:35,855 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-21 16:32:35,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-21 16:32:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 16:32:35,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:35,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 16:32:35,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-21 16:32:35,858 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:35,859 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-21 16:32:35,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:35,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920250638] [2020-08-21 16:32:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 16:32:35,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920250638] [2020-08-21 16:32:35,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:35,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:35,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450862654] [2020-08-21 16:32:35,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:35,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:35,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:35,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:35,933 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-21 16:32:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:36,225 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-21 16:32:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:36,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-21 16:32:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:36,230 INFO L225 Difference]: With dead ends: 1705 [2020-08-21 16:32:36,231 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 16:32:36,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 16:32:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-21 16:32:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 16:32:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-21 16:32:36,294 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-21 16:32:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:36,294 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-21 16:32:36,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-21 16:32:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 16:32:36,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:36,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-21 16:32:36,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-21 16:32:36,297 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:36,298 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-21 16:32:36,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:36,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82554490] [2020-08-21 16:32:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 16:32:36,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82554490] [2020-08-21 16:32:36,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:36,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:36,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470898831] [2020-08-21 16:32:36,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:36,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:36,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:36,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:36,392 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-21 16:32:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:36,659 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-21 16:32:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:36,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-21 16:32:36,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:36,664 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 16:32:36,667 INFO L226 Difference]: Without dead ends: 848 [2020-08-21 16:32:36,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-21 16:32:36,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-21 16:32:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 16:32:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-21 16:32:36,729 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-21 16:32:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:36,729 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-21 16:32:36,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-21 16:32:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 16:32:36,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:36,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-21 16:32:36,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-21 16:32:36,750 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-21 16:32:36,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:36,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886518542] [2020-08-21 16:32:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 16:32:36,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886518542] [2020-08-21 16:32:36,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:36,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:32:36,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163966425] [2020-08-21 16:32:36,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:32:36,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:36,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:32:36,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:32:36,815 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-21 16:32:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:37,056 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-21 16:32:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:32:37,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 16:32:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:37,061 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 16:32:37,061 INFO L226 Difference]: Without dead ends: 831 [2020-08-21 16:32:37,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:32:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-21 16:32:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-21 16:32:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-21 16:32:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-21 16:32:37,106 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-21 16:32:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:37,107 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-21 16:32:37,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:32:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-21 16:32:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 16:32:37,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:37,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:37,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-21 16:32:37,110 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:37,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-21 16:32:37,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:37,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654653050] [2020-08-21 16:32:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 16:32:37,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654653050] [2020-08-21 16:32:37,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:37,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:32:37,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829846062] [2020-08-21 16:32:37,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:32:37,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:37,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:32:37,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:32:37,174 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-21 16:32:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:37,262 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-21 16:32:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:32:37,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 16:32:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:37,269 INFO L225 Difference]: With dead ends: 2417 [2020-08-21 16:32:37,270 INFO L226 Difference]: Without dead ends: 1611 [2020-08-21 16:32:37,272 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 [2020-08-21 16:32:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-21 16:32:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-21 16:32:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-21 16:32:37,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-21 16:32:37,325 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-21 16:32:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:37,325 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-21 16:32:37,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:32:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-21 16:32:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 16:32:37,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:37,328 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:37,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-21 16:32:37,328 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:37,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-21 16:32:37,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:37,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82951662] [2020-08-21 16:32:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:37,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-21 16:32:37,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82951662] [2020-08-21 16:32:37,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:37,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:32:37,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772236720] [2020-08-21 16:32:37,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:32:37,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:37,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:32:37,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:32:37,408 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-21 16:32:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:37,542 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-21 16:32:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:32:37,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 16:32:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:37,550 INFO L225 Difference]: With dead ends: 2416 [2020-08-21 16:32:37,551 INFO L226 Difference]: Without dead ends: 1608 [2020-08-21 16:32:37,553 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 [2020-08-21 16:32:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-21 16:32:37,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-21 16:32:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 16:32:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-21 16:32:37,659 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-21 16:32:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:37,660 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-21 16:32:37,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:32:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-21 16:32:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-21 16:32:37,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:37,664 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:37,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-21 16:32:37,664 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:37,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:37,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-21 16:32:37,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:37,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216182337] [2020-08-21 16:32:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:37,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 16:32:37,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216182337] [2020-08-21 16:32:37,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:37,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:32:37,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163785811] [2020-08-21 16:32:37,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:32:37,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:37,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:32:37,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:32:37,838 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-21 16:32:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:38,072 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-21 16:32:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:32:38,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-21 16:32:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:38,086 INFO L225 Difference]: With dead ends: 4752 [2020-08-21 16:32:38,086 INFO L226 Difference]: Without dead ends: 3159 [2020-08-21 16:32:38,092 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 [2020-08-21 16:32:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-21 16:32:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-21 16:32:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 16:32:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-21 16:32:38,208 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-21 16:32:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:38,208 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-21 16:32:38,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:32:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-21 16:32:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 16:32:38,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:38,211 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:38,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-21 16:32:38,212 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-21 16:32:38,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:38,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666639861] [2020-08-21 16:32:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:38,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:32:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:32:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-21 16:32:38,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666639861] [2020-08-21 16:32:38,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:32:38,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:32:38,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601389713] [2020-08-21 16:32:38,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:32:38,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:32:38,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:32:38,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:32:38,401 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-21 16:32:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:32:38,776 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-21 16:32:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:32:38,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-21 16:32:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:32:38,790 INFO L225 Difference]: With dead ends: 4792 [2020-08-21 16:32:38,791 INFO L226 Difference]: Without dead ends: 3199 [2020-08-21 16:32:38,795 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 [2020-08-21 16:32:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-21 16:32:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-21 16:32:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-21 16:32:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-21 16:32:39,002 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-21 16:32:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:32:39,002 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-21 16:32:39,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:32:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-21 16:32:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 16:32:39,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:32:39,006 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:32:39,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-21 16:32:39,006 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:32:39,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:32:39,007 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-21 16:32:39,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:32:39,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992242430] [2020-08-21 16:32:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:32:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:32:39,050 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:32:39,051 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:32:39,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-21 16:32:39,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:32:39 BoogieIcfgContainer [2020-08-21 16:32:39,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:32:39,094 INFO L168 Benchmark]: Toolchain (without parser) took 16035.31 ms. Allocated memory was 140.5 MB in the beginning and 466.6 MB in the end (delta: 326.1 MB). Free memory was 103.2 MB in the beginning and 168.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 260.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:32:39,095 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:32:39,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.01 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 178.2 MB in the end (delta: -75.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:32:39,096 INFO L168 Benchmark]: Boogie Preprocessor took 62.30 ms. Allocated memory is still 203.9 MB. Free memory was 178.2 MB in the beginning and 175.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:32:39,096 INFO L168 Benchmark]: RCFGBuilder took 881.35 ms. Allocated memory is still 203.9 MB. Free memory was 175.2 MB in the beginning and 117.5 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:32:39,097 INFO L168 Benchmark]: TraceAbstraction took 14495.43 ms. Allocated memory was 203.9 MB in the beginning and 466.6 MB in the end (delta: 262.7 MB). Free memory was 116.9 MB in the beginning and 168.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 210.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:32:39,099 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 591.01 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 178.2 MB in the end (delta: -75.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.30 ms. Allocated memory is still 203.9 MB. Free memory was 178.2 MB in the beginning and 175.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 881.35 ms. Allocated memory is still 203.9 MB. Free memory was 175.2 MB in the beginning and 117.5 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14495.43 ms. Allocated memory was 203.9 MB in the beginning and 466.6 MB in the end (delta: 262.7 MB). Free memory was 116.9 MB in the beginning and 168.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 210.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.3s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7259 SDtfs, 16112 SDslu, 7753 SDs, 0 SdLazy, 4949 SolverSat, 1408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 3391 NumberOfCodeBlocks, 3391 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3195 ConstructedInterpolants, 0 QuantifiedInterpolants, 632376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 2752/2752 InterpolantCoveringCapability, 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...