/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 [2020-08-22 03:51:16,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:51:16,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:51:16,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:51:16,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:51:16,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:51:16,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:51:16,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:51:16,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:51:16,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:51:16,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:51:16,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:51:16,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:51:16,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:51:16,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:51:16,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:51:16,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:51:16,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:51:16,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:51:16,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:51:16,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:51:16,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:51:16,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:51:16,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:51:16,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:51:16,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:51:16,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:51:16,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:51:16,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:51:16,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:51:16,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:51:16,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:51:16,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:51:16,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:51:16,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:51:16,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:51:16,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:51:16,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:51:16,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:51:16,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:51:16,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:51:16,750 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 [2020-08-22 03:51:16,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:51:16,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:51:16,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:51:16,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:51:16,795 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:51:16,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:51:16,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:51:16,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:51:16,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:51:16,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:51:16,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:51:16,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:51:16,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:51:16,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:51:16,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:51:16,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:51:16,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:51:16,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:51:16,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:51:16,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:51:16,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:51:16,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:51:16,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:51:16,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:51:16,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:51:16,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:51:16,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:51:16,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:51:16,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:51:16,802 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:51:17,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:51:17,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:51:17,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:51:17,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:51:17,128 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:51:17,129 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 03:51:17,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ead6665/5fba22670d41490a85e60c0814307230/FLAGc9953b49d [2020-08-22 03:51:17,692 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:51:17,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 03:51:17,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ead6665/5fba22670d41490a85e60c0814307230/FLAGc9953b49d [2020-08-22 03:51:18,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ead6665/5fba22670d41490a85e60c0814307230 [2020-08-22 03:51:18,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:51:18,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:51:18,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:18,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:51:18,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:51:18,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18, skipping insertion in model container [2020-08-22 03:51:18,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:51:18,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:51:18,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:18,429 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:51:18,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:18,605 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:51:18,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18 WrapperNode [2020-08-22 03:51:18,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:18,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:51:18,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:51:18,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:51:18,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (1/1) ... [2020-08-22 03:51:18,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:51:18,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:51:18,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:51:18,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:51:18,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (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 [2020-08-22 03:51:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:51:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:51:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-22 03:51:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:51:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:51:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 03:51:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:51:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 03:51:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 03:51:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-22 03:51:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:51:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:51:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:51:19,058 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 03:51:19,609 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-22 03:51:19,609 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-22 03:51:19,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:51:19,622 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 03:51:19,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:19 BoogieIcfgContainer [2020-08-22 03:51:19,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:51:19,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:51:19,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:51:19,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:51:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:51:18" (1/3) ... [2020-08-22 03:51:19,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41af3408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:19, skipping insertion in model container [2020-08-22 03:51:19,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:18" (2/3) ... [2020-08-22 03:51:19,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41af3408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:19, skipping insertion in model container [2020-08-22 03:51:19,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:19" (3/3) ... [2020-08-22 03:51:19,638 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-22 03:51:19,650 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:51:19,659 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:51:19,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:51:19,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:51:19,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:51:19,704 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:51:19,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:51:19,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:51:19,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:51:19,705 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:51:19,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:51:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 03:51:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 03:51:19,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:19,741 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] [2020-08-22 03:51:19,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-22 03:51:19,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:19,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743069707] [2020-08-22 03:51:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:20,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743069707] [2020-08-22 03:51:20,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:20,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:20,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012057369] [2020-08-22 03:51:20,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:20,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:20,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:20,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:20,115 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-22 03:51:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:20,612 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-22 03:51:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:20,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-22 03:51:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:20,639 INFO L225 Difference]: With dead ends: 362 [2020-08-22 03:51:20,639 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 03:51:20,647 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 [2020-08-22 03:51:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 03:51:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-22 03:51:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 03:51:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-22 03:51:20,744 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-22 03:51:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:20,745 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-22 03:51:20,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-22 03:51:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 03:51:20,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:20,748 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] [2020-08-22 03:51:20,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:51:20,749 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-22 03:51:20,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:20,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918125311] [2020-08-22 03:51:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:20,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918125311] [2020-08-22 03:51:20,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:20,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:20,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735890510] [2020-08-22 03:51:20,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:20,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:20,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:20,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:20,852 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-22 03:51:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:21,091 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-22 03:51:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:21,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 03:51:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:21,094 INFO L225 Difference]: With dead ends: 363 [2020-08-22 03:51:21,094 INFO L226 Difference]: Without dead ends: 199 [2020-08-22 03:51:21,096 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 [2020-08-22 03:51:21,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-22 03:51:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-22 03:51:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-22 03:51:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-22 03:51:21,115 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-22 03:51:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:21,115 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-22 03:51:21,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-22 03:51:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 03:51:21,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:21,117 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] [2020-08-22 03:51:21,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:51:21,118 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:21,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:21,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-22 03:51:21,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:21,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588488204] [2020-08-22 03:51:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:21,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588488204] [2020-08-22 03:51:21,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:21,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:21,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106314599] [2020-08-22 03:51:21,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:21,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:21,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:21,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:21,242 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-22 03:51:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:21,523 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-22 03:51:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:21,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 03:51:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:21,527 INFO L225 Difference]: With dead ends: 393 [2020-08-22 03:51:21,527 INFO L226 Difference]: Without dead ends: 207 [2020-08-22 03:51:21,529 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 [2020-08-22 03:51:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-22 03:51:21,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-22 03:51:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 03:51:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-22 03:51:21,546 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-22 03:51:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:21,547 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-22 03:51:21,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-22 03:51:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 03:51:21,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:21,549 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] [2020-08-22 03:51:21,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:51:21,550 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:21,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:21,550 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-22 03:51:21,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:21,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839309449] [2020-08-22 03:51:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:21,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839309449] [2020-08-22 03:51:21,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:21,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:21,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289921878] [2020-08-22 03:51:21,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:21,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:21,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:21,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:21,638 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-22 03:51:21,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:21,867 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-22 03:51:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:21,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 03:51:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:21,870 INFO L225 Difference]: With dead ends: 398 [2020-08-22 03:51:21,870 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 03:51:21,871 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 [2020-08-22 03:51:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 03:51:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 03:51:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:51:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-22 03:51:21,885 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-22 03:51:21,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:21,886 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-22 03:51:21,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-22 03:51:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 03:51:21,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:21,888 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] [2020-08-22 03:51:21,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:51:21,889 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-22 03:51:21,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:21,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589084268] [2020-08-22 03:51:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:21,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589084268] [2020-08-22 03:51:21,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:21,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:21,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295420824] [2020-08-22 03:51:21,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:21,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:21,975 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-22 03:51:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:22,167 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-22 03:51:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:22,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-22 03:51:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:22,169 INFO L225 Difference]: With dead ends: 409 [2020-08-22 03:51:22,170 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 03:51:22,170 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 [2020-08-22 03:51:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 03:51:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 03:51:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:51:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-22 03:51:22,182 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-22 03:51:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:22,183 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-22 03:51:22,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-22 03:51:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 03:51:22,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:22,185 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] [2020-08-22 03:51:22,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:51:22,186 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:22,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:22,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-22 03:51:22,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:22,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495822979] [2020-08-22 03:51:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:22,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495822979] [2020-08-22 03:51:22,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:22,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:22,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725634784] [2020-08-22 03:51:22,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:22,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:22,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:22,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:22,254 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-22 03:51:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:22,441 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-22 03:51:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:22,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-22 03:51:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:22,444 INFO L225 Difference]: With dead ends: 409 [2020-08-22 03:51:22,444 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 03:51:22,445 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 [2020-08-22 03:51:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 03:51:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 03:51:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:51:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-22 03:51:22,482 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-22 03:51:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:22,482 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-22 03:51:22,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-22 03:51:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 03:51:22,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:22,488 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] [2020-08-22 03:51:22,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:51:22,490 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:22,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:22,490 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-22 03:51:22,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:22,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201056193] [2020-08-22 03:51:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:22,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201056193] [2020-08-22 03:51:22,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:22,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:22,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348068967] [2020-08-22 03:51:22,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:22,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:22,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:22,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:22,587 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-22 03:51:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:22,771 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-22 03:51:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:22,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 03:51:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:22,776 INFO L225 Difference]: With dead ends: 409 [2020-08-22 03:51:22,776 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 03:51:22,777 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 [2020-08-22 03:51:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 03:51:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 03:51:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 03:51:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-22 03:51:22,789 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-22 03:51:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:22,789 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-22 03:51:22,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-22 03:51:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 03:51:22,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:22,791 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] [2020-08-22 03:51:22,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:51:22,791 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:22,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-22 03:51:22,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:22,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447667562] [2020-08-22 03:51:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:22,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447667562] [2020-08-22 03:51:22,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:22,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:51:22,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462295716] [2020-08-22 03:51:22,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:51:22,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:22,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:51:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:51:22,874 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-22 03:51:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:23,229 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-22 03:51:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 03:51:23,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-22 03:51:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:23,234 INFO L225 Difference]: With dead ends: 605 [2020-08-22 03:51:23,234 INFO L226 Difference]: Without dead ends: 412 [2020-08-22 03:51:23,235 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 [2020-08-22 03:51:23,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-22 03:51:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-22 03:51:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-22 03:51:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-22 03:51:23,266 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-22 03:51:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:23,267 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-22 03:51:23,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:51:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-22 03:51:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 03:51:23,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:23,269 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] [2020-08-22 03:51:23,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:51:23,270 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:23,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:23,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-22 03:51:23,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:23,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395097710] [2020-08-22 03:51:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:23,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395097710] [2020-08-22 03:51:23,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:23,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:23,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470475160] [2020-08-22 03:51:23,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:23,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:23,362 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-22 03:51:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:23,670 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-22 03:51:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:23,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-22 03:51:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:23,674 INFO L225 Difference]: With dead ends: 847 [2020-08-22 03:51:23,674 INFO L226 Difference]: Without dead ends: 472 [2020-08-22 03:51:23,675 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 [2020-08-22 03:51:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-22 03:51:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-22 03:51:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-22 03:51:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-22 03:51:23,713 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-22 03:51:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:23,714 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-22 03:51:23,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-22 03:51:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 03:51:23,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:23,715 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] [2020-08-22 03:51:23,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:51:23,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:23,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-22 03:51:23,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:23,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793775607] [2020-08-22 03:51:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:23,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793775607] [2020-08-22 03:51:23,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:23,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:23,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151567683] [2020-08-22 03:51:23,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:23,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:23,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:23,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:23,806 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-22 03:51:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:24,063 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-22 03:51:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:24,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-22 03:51:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:24,067 INFO L225 Difference]: With dead ends: 936 [2020-08-22 03:51:24,067 INFO L226 Difference]: Without dead ends: 495 [2020-08-22 03:51:24,069 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 [2020-08-22 03:51:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-22 03:51:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-22 03:51:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-22 03:51:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-22 03:51:24,097 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-22 03:51:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:24,098 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-22 03:51:24,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-22 03:51:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 03:51:24,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:24,100 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] [2020-08-22 03:51:24,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:51:24,100 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:24,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-22 03:51:24,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:24,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584834864] [2020-08-22 03:51:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 03:51:24,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584834864] [2020-08-22 03:51:24,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:24,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:24,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092057692] [2020-08-22 03:51:24,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:24,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:24,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:24,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:24,202 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-22 03:51:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:24,453 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-22 03:51:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:24,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-22 03:51:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:24,459 INFO L225 Difference]: With dead ends: 993 [2020-08-22 03:51:24,459 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 03:51:24,460 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 [2020-08-22 03:51:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 03:51:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 03:51:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 03:51:24,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-22 03:51:24,487 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-22 03:51:24,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:24,487 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-22 03:51:24,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-22 03:51:24,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 03:51:24,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:24,489 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] [2020-08-22 03:51:24,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:51:24,489 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:24,490 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-22 03:51:24,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:24,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931814807] [2020-08-22 03:51:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 03:51:24,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931814807] [2020-08-22 03:51:24,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:24,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:24,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775610015] [2020-08-22 03:51:24,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:24,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:24,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:24,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:24,551 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-22 03:51:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:24,770 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-22 03:51:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:24,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 03:51:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:24,774 INFO L225 Difference]: With dead ends: 1027 [2020-08-22 03:51:24,774 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 03:51:24,776 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 [2020-08-22 03:51:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 03:51:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 03:51:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 03:51:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-22 03:51:24,818 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-22 03:51:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:24,818 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-22 03:51:24,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-22 03:51:24,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 03:51:24,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:24,820 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] [2020-08-22 03:51:24,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 03:51:24,821 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:24,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-22 03:51:24,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:24,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555730026] [2020-08-22 03:51:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 03:51:24,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555730026] [2020-08-22 03:51:24,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:24,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:24,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106777701] [2020-08-22 03:51:24,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:24,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:24,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:24,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:24,889 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-22 03:51:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:25,159 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-22 03:51:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:25,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 03:51:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:25,164 INFO L225 Difference]: With dead ends: 1074 [2020-08-22 03:51:25,164 INFO L226 Difference]: Without dead ends: 576 [2020-08-22 03:51:25,165 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 [2020-08-22 03:51:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-22 03:51:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-22 03:51:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-22 03:51:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-22 03:51:25,198 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-22 03:51:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:25,199 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-22 03:51:25,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-22 03:51:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 03:51:25,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:25,201 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] [2020-08-22 03:51:25,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 03:51:25,202 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:25,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:25,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-22 03:51:25,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:25,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085083574] [2020-08-22 03:51:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:25,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085083574] [2020-08-22 03:51:25,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:25,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:25,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708605635] [2020-08-22 03:51:25,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:25,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:25,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:25,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:25,318 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-22 03:51:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:25,557 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-22 03:51:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:25,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-22 03:51:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:25,561 INFO L225 Difference]: With dead ends: 1184 [2020-08-22 03:51:25,562 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 03:51:25,564 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 [2020-08-22 03:51:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 03:51:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 03:51:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 03:51:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-22 03:51:25,599 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-22 03:51:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:25,599 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-22 03:51:25,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-22 03:51:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 03:51:25,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:25,604 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] [2020-08-22 03:51:25,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 03:51:25,604 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:25,605 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-22 03:51:25,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:25,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799394271] [2020-08-22 03:51:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:51:25,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799394271] [2020-08-22 03:51:25,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:25,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:25,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607461990] [2020-08-22 03:51:25,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:25,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:25,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:25,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:25,677 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-22 03:51:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:25,914 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-22 03:51:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:25,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-22 03:51:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:25,919 INFO L225 Difference]: With dead ends: 1227 [2020-08-22 03:51:25,919 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 03:51:25,922 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 [2020-08-22 03:51:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 03:51:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 03:51:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 03:51:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-22 03:51:25,951 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-22 03:51:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:25,951 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-22 03:51:25,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-22 03:51:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 03:51:25,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:25,954 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] [2020-08-22 03:51:25,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 03:51:25,954 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-22 03:51:25,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:25,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891516127] [2020-08-22 03:51:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:51:26,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891516127] [2020-08-22 03:51:26,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:26,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:26,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867718791] [2020-08-22 03:51:26,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:26,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:26,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:26,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:26,031 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-22 03:51:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:26,293 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-22 03:51:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:26,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-22 03:51:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:26,298 INFO L225 Difference]: With dead ends: 1223 [2020-08-22 03:51:26,298 INFO L226 Difference]: Without dead ends: 619 [2020-08-22 03:51:26,300 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 [2020-08-22 03:51:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-22 03:51:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-22 03:51:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 03:51:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-22 03:51:26,333 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-22 03:51:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:26,334 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-22 03:51:26,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-22 03:51:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 03:51:26,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:26,336 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] [2020-08-22 03:51:26,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 03:51:26,337 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-22 03:51:26,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:26,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166410806] [2020-08-22 03:51:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 03:51:26,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166410806] [2020-08-22 03:51:26,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:26,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:26,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506921717] [2020-08-22 03:51:26,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:26,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:26,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:26,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:26,402 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-22 03:51:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:26,620 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-22 03:51:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:26,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-22 03:51:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:26,624 INFO L225 Difference]: With dead ends: 1281 [2020-08-22 03:51:26,624 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 03:51:26,626 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 [2020-08-22 03:51:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 03:51:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 03:51:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 03:51:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-22 03:51:26,662 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-22 03:51:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:26,663 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-22 03:51:26,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-22 03:51:26,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 03:51:26,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:26,665 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] [2020-08-22 03:51:26,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 03:51:26,665 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:26,666 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-22 03:51:26,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:26,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539523781] [2020-08-22 03:51:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 03:51:26,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539523781] [2020-08-22 03:51:26,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:26,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:26,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650349328] [2020-08-22 03:51:26,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:26,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:26,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:26,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:26,731 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-22 03:51:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:27,005 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-22 03:51:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:27,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-22 03:51:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:27,011 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 03:51:27,012 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 03:51:27,014 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 [2020-08-22 03:51:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 03:51:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 03:51:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 03:51:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-22 03:51:27,062 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-22 03:51:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:27,062 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-22 03:51:27,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-22 03:51:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-22 03:51:27,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:27,065 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] [2020-08-22 03:51:27,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 03:51:27,066 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:27,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-22 03:51:27,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:27,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247319626] [2020-08-22 03:51:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:51:27,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247319626] [2020-08-22 03:51:27,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:27,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:27,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467585228] [2020-08-22 03:51:27,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:27,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:27,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:27,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:27,157 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-22 03:51:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:27,443 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-22 03:51:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:27,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-22 03:51:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:27,447 INFO L225 Difference]: With dead ends: 1349 [2020-08-22 03:51:27,448 INFO L226 Difference]: Without dead ends: 713 [2020-08-22 03:51:27,450 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 [2020-08-22 03:51:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-22 03:51:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-22 03:51:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-22 03:51:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-22 03:51:27,483 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-22 03:51:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:27,484 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-22 03:51:27,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-22 03:51:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-22 03:51:27,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:27,487 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] [2020-08-22 03:51:27,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 03:51:27,487 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:27,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-22 03:51:27,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:27,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025168140] [2020-08-22 03:51:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:51:27,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025168140] [2020-08-22 03:51:27,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:27,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:27,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079776041] [2020-08-22 03:51:27,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:27,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:27,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:27,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:27,546 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-22 03:51:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:27,874 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-22 03:51:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:27,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-22 03:51:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:27,881 INFO L225 Difference]: With dead ends: 1406 [2020-08-22 03:51:27,881 INFO L226 Difference]: Without dead ends: 714 [2020-08-22 03:51:27,883 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 [2020-08-22 03:51:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-22 03:51:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-22 03:51:27,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 03:51:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-22 03:51:27,931 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-22 03:51:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:27,931 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-22 03:51:27,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-22 03:51:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 03:51:27,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:27,935 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] [2020-08-22 03:51:27,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 03:51:27,936 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:27,936 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-22 03:51:27,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:27,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191790906] [2020-08-22 03:51:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 03:51:28,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191790906] [2020-08-22 03:51:28,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:28,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:28,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637395258] [2020-08-22 03:51:28,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:28,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:28,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:28,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:28,008 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-22 03:51:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:28,302 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-22 03:51:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:28,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-22 03:51:28,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:28,306 INFO L225 Difference]: With dead ends: 1438 [2020-08-22 03:51:28,306 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 03:51:28,308 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 [2020-08-22 03:51:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 03:51:28,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 03:51:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 03:51:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-22 03:51:28,344 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-22 03:51:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:28,345 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-22 03:51:28,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-22 03:51:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-22 03:51:28,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:28,347 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] [2020-08-22 03:51:28,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 03:51:28,348 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:28,348 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-22 03:51:28,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:28,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321754691] [2020-08-22 03:51:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 03:51:28,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321754691] [2020-08-22 03:51:28,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:28,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:28,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393522580] [2020-08-22 03:51:28,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:28,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:28,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:28,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:28,419 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-22 03:51:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:28,733 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-22 03:51:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:28,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-22 03:51:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:28,741 INFO L225 Difference]: With dead ends: 1479 [2020-08-22 03:51:28,741 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 03:51:28,745 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 [2020-08-22 03:51:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 03:51:28,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 03:51:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 03:51:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-22 03:51:28,816 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-22 03:51:28,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:28,817 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-22 03:51:28,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-22 03:51:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 03:51:28,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:28,821 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] [2020-08-22 03:51:28,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 03:51:28,822 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-22 03:51:28,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:28,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874097662] [2020-08-22 03:51:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 03:51:28,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874097662] [2020-08-22 03:51:28,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:28,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:28,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044445977] [2020-08-22 03:51:28,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:28,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:28,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:28,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:28,920 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-22 03:51:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:29,250 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-22 03:51:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:29,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-22 03:51:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:29,256 INFO L225 Difference]: With dead ends: 1515 [2020-08-22 03:51:29,256 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 03:51:29,258 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 [2020-08-22 03:51:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 03:51:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 03:51:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 03:51:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-22 03:51:29,320 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-22 03:51:29,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:29,321 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-22 03:51:29,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-22 03:51:29,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 03:51:29,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:29,325 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] [2020-08-22 03:51:29,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 03:51:29,326 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:29,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-22 03:51:29,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:29,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622871549] [2020-08-22 03:51:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 03:51:29,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622871549] [2020-08-22 03:51:29,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:29,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:29,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432377143] [2020-08-22 03:51:29,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:29,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:29,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:29,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:29,472 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-22 03:51:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:29,728 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-22 03:51:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:29,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-22 03:51:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:29,733 INFO L225 Difference]: With dead ends: 1547 [2020-08-22 03:51:29,733 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 03:51:29,735 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 [2020-08-22 03:51:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 03:51:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 03:51:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 03:51:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-22 03:51:29,778 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-22 03:51:29,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:29,778 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-22 03:51:29,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-22 03:51:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 03:51:29,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:29,781 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] [2020-08-22 03:51:29,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 03:51:29,781 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-22 03:51:29,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:29,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711454464] [2020-08-22 03:51:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-22 03:51:29,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711454464] [2020-08-22 03:51:29,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:29,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:29,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969494370] [2020-08-22 03:51:29,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:29,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:29,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:29,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:29,861 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-22 03:51:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:30,100 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-22 03:51:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:30,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-22 03:51:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:30,105 INFO L225 Difference]: With dead ends: 1573 [2020-08-22 03:51:30,105 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 03:51:30,107 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 [2020-08-22 03:51:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 03:51:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 03:51:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 03:51:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-22 03:51:30,164 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-22 03:51:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:30,164 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-22 03:51:30,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-22 03:51:30,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 03:51:30,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:30,168 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] [2020-08-22 03:51:30,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 03:51:30,168 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:30,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:30,169 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-22 03:51:30,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:30,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222495964] [2020-08-22 03:51:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-22 03:51:30,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222495964] [2020-08-22 03:51:30,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:30,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:30,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120202131] [2020-08-22 03:51:30,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:30,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:30,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:30,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:30,246 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-22 03:51:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:30,513 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-22 03:51:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:30,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-22 03:51:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:30,520 INFO L225 Difference]: With dead ends: 1601 [2020-08-22 03:51:30,520 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 03:51:30,523 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 [2020-08-22 03:51:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 03:51:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 03:51:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 03:51:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-22 03:51:30,632 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-22 03:51:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:30,632 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-22 03:51:30,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-22 03:51:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 03:51:30,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:30,637 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] [2020-08-22 03:51:30,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 03:51:30,638 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:30,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-22 03:51:30,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:30,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780229804] [2020-08-22 03:51:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 03:51:30,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780229804] [2020-08-22 03:51:30,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:30,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:30,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120047568] [2020-08-22 03:51:30,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:30,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:30,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:30,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:30,721 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-22 03:51:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:31,024 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-22 03:51:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:31,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 03:51:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:31,029 INFO L225 Difference]: With dead ends: 1656 [2020-08-22 03:51:31,029 INFO L226 Difference]: Without dead ends: 866 [2020-08-22 03:51:31,031 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 [2020-08-22 03:51:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-22 03:51:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-22 03:51:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-22 03:51:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-22 03:51:31,081 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-22 03:51:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:31,082 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-22 03:51:31,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:31,082 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-22 03:51:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 03:51:31,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:31,085 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] [2020-08-22 03:51:31,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 03:51:31,085 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:31,086 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-22 03:51:31,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:31,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907877774] [2020-08-22 03:51:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 03:51:31,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907877774] [2020-08-22 03:51:31,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:31,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:31,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579442035] [2020-08-22 03:51:31,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:31,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:31,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:31,158 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-22 03:51:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:31,435 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-22 03:51:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:31,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-22 03:51:31,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:31,441 INFO L225 Difference]: With dead ends: 1705 [2020-08-22 03:51:31,441 INFO L226 Difference]: Without dead ends: 850 [2020-08-22 03:51:31,443 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 [2020-08-22 03:51:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-22 03:51:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-22 03:51:31,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 03:51:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-22 03:51:31,503 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-22 03:51:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:31,503 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-22 03:51:31,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-22 03:51:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 03:51:31,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:31,506 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] [2020-08-22 03:51:31,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 03:51:31,506 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:31,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:31,507 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-22 03:51:31,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:31,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875090841] [2020-08-22 03:51:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-22 03:51:31,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875090841] [2020-08-22 03:51:31,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:31,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:31,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729426299] [2020-08-22 03:51:31,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:31,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:31,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:31,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:31,600 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-22 03:51:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:31,867 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-22 03:51:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:31,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-22 03:51:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:31,872 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 03:51:31,872 INFO L226 Difference]: Without dead ends: 848 [2020-08-22 03:51:31,875 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 [2020-08-22 03:51:31,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-22 03:51:31,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-22 03:51:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 03:51:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-22 03:51:31,919 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-22 03:51:31,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:31,920 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-22 03:51:31,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-22 03:51:31,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 03:51:31,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:31,922 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] [2020-08-22 03:51:31,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 03:51:31,923 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:31,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:31,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-22 03:51:31,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:31,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799325346] [2020-08-22 03:51:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-22 03:51:31,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799325346] [2020-08-22 03:51:31,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:31,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:51:31,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954480812] [2020-08-22 03:51:31,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:51:31,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:51:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:51:31,993 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-22 03:51:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:32,252 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-22 03:51:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:51:32,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 03:51:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:32,257 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 03:51:32,257 INFO L226 Difference]: Without dead ends: 831 [2020-08-22 03:51:32,261 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 [2020-08-22 03:51:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-22 03:51:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-22 03:51:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-22 03:51:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-22 03:51:32,309 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-22 03:51:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:32,310 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-22 03:51:32,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:51:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-22 03:51:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 03:51:32,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:32,312 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] [2020-08-22 03:51:32,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 03:51:32,313 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:32,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-22 03:51:32,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:32,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362984789] [2020-08-22 03:51:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-22 03:51:32,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362984789] [2020-08-22 03:51:32,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:32,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:51:32,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644045996] [2020-08-22 03:51:32,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:51:32,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:32,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:51:32,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:32,382 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-22 03:51:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:32,477 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-22 03:51:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:51:32,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 03:51:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:32,486 INFO L225 Difference]: With dead ends: 2417 [2020-08-22 03:51:32,486 INFO L226 Difference]: Without dead ends: 1611 [2020-08-22 03:51:32,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-22 03:51:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-22 03:51:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-22 03:51:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-22 03:51:32,557 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-22 03:51:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:32,557 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-22 03:51:32,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:51:32,557 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-22 03:51:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 03:51:32,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:32,560 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] [2020-08-22 03:51:32,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 03:51:32,561 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:32,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-22 03:51:32,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:32,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337753596] [2020-08-22 03:51:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-22 03:51:32,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337753596] [2020-08-22 03:51:32,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:32,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:51:32,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903352058] [2020-08-22 03:51:32,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:51:32,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:32,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:51:32,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:32,677 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-22 03:51:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:32,800 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-22 03:51:32,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:51:32,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 03:51:32,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:32,811 INFO L225 Difference]: With dead ends: 2416 [2020-08-22 03:51:32,811 INFO L226 Difference]: Without dead ends: 1608 [2020-08-22 03:51:32,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-22 03:51:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-22 03:51:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 03:51:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-22 03:51:32,950 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-22 03:51:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:32,950 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-22 03:51:32,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:51:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-22 03:51:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 03:51:32,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:32,954 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] [2020-08-22 03:51:32,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 03:51:32,955 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:32,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-22 03:51:32,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:32,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554095346] [2020-08-22 03:51:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-22 03:51:33,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554095346] [2020-08-22 03:51:33,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:33,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:51:33,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009621538] [2020-08-22 03:51:33,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:51:33,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:33,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:51:33,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:33,137 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-22 03:51:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:33,392 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-22 03:51:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:51:33,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-22 03:51:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:33,413 INFO L225 Difference]: With dead ends: 4752 [2020-08-22 03:51:33,413 INFO L226 Difference]: Without dead ends: 3159 [2020-08-22 03:51:33,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-22 03:51:33,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-22 03:51:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 03:51:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-22 03:51:33,599 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-22 03:51:33,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:33,600 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-22 03:51:33,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:51:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-22 03:51:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 03:51:33,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:33,604 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] [2020-08-22 03:51:33,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 03:51:33,604 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-22 03:51:33,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:33,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499903209] [2020-08-22 03:51:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-22 03:51:33,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499903209] [2020-08-22 03:51:33,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:33,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:51:33,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544625349] [2020-08-22 03:51:33,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:51:33,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:33,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:51:33,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:33,767 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-22 03:51:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:34,101 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-22 03:51:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:51:34,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-22 03:51:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:34,117 INFO L225 Difference]: With dead ends: 4792 [2020-08-22 03:51:34,117 INFO L226 Difference]: Without dead ends: 3199 [2020-08-22 03:51:34,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:51:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-22 03:51:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-22 03:51:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-22 03:51:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-22 03:51:34,393 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-22 03:51:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:34,394 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-22 03:51:34,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:51:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-22 03:51:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 03:51:34,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:34,399 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] [2020-08-22 03:51:34,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 03:51:34,399 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-22 03:51:34,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:34,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578752973] [2020-08-22 03:51:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:51:34,464 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:51:34,464 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:51:34,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 03:51:34,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:51:34 BoogieIcfgContainer [2020-08-22 03:51:34,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:51:34,550 INFO L168 Benchmark]: Toolchain (without parser) took 16489.70 ms. Allocated memory was 138.4 MB in the beginning and 539.0 MB in the end (delta: 400.6 MB). Free memory was 101.1 MB in the beginning and 223.5 MB in the end (delta: -122.4 MB). Peak memory consumption was 278.2 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:34,551 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 03:51:34,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.47 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 175.9 MB in the end (delta: -75.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:34,552 INFO L168 Benchmark]: Boogie Preprocessor took 106.52 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 172.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:34,552 INFO L168 Benchmark]: RCFGBuilder took 915.04 ms. Allocated memory is still 201.3 MB. Free memory was 172.9 MB in the beginning and 115.1 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:34,553 INFO L168 Benchmark]: TraceAbstraction took 14917.07 ms. Allocated memory was 201.3 MB in the beginning and 539.0 MB in the end (delta: 337.6 MB). Free memory was 114.4 MB in the beginning and 223.5 MB in the end (delta: -109.0 MB). Peak memory consumption was 228.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:51:34,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 545.47 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 175.9 MB in the end (delta: -75.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.52 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 172.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 915.04 ms. Allocated memory is still 201.3 MB. Free memory was 172.9 MB in the beginning and 115.1 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14917.07 ms. Allocated memory was 201.3 MB in the beginning and 539.0 MB in the end (delta: 337.6 MB). Free memory was 114.4 MB in the beginning and 223.5 MB in the end (delta: -109.0 MB). Peak memory consumption was 228.6 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: 14.7s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.2s, 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, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s 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: 1.8s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.8s 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...