/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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 01:25:30,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:25:30,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:25:30,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:25:30,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:25:30,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:25:30,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:25:30,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:25:30,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:25:30,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:25:30,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:25:30,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:25:30,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:25:30,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:25:30,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:25:30,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:25:30,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:25:30,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:25:30,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:25:30,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:25:30,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:25:30,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:25:30,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:25:30,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:25:30,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:25:30,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:25:30,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:25:30,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:25:30,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:25:30,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:25:30,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:25:30,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:25:30,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:25:30,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:25:30,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:25:30,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:25:30,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:25:30,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:25:30,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:25:30,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:25:30,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:25:30,735 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 01:25:30,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:25:30,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:25:30,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:25:30,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:25:30,780 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:25:30,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:25:30,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:25:30,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:25:30,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:25:30,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:25:30,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:25:30,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:25:30,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:25:30,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:25:30,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:25:30,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:25:30,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:25:30,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:25:30,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:25:30,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:25:30,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:25:30,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:25:30,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:25:30,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:25:30,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:25:30,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:25:30,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:25:30,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:25:30,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:25:30,786 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:25:31,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:25:31,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:25:31,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:25:31,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:25:31,130 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:25:31,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 01:25:31,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293974d73/f8de80d9ea2c430fba339f483139554c/FLAGedfe87ed3 [2020-08-22 01:25:31,647 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:25:31,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 01:25:31,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293974d73/f8de80d9ea2c430fba339f483139554c/FLAGedfe87ed3 [2020-08-22 01:25:32,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293974d73/f8de80d9ea2c430fba339f483139554c [2020-08-22 01:25:32,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:25:32,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:25:32,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:25:32,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:25:32,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:25:32,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742dacf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32, skipping insertion in model container [2020-08-22 01:25:32,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:25:32,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:25:32,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:25:32,468 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:25:32,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:25:32,594 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:25:32,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32 WrapperNode [2020-08-22 01:25:32,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:25:32,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:25:32,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:25:32,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:25:32,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (1/1) ... [2020-08-22 01:25:32,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:25:32,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:25:32,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:25:32,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:25:32,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (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 01:25:32,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:25:32,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:25:32,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-22 01:25:32,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:25:32,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:25:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 01:25:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:25:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 01:25:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 01:25:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-22 01:25:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:25:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:25:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:25:32,995 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 01:25:33,539 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-22 01:25:33,540 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-22 01:25:33,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:25:33,556 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 01:25:33,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:25:33 BoogieIcfgContainer [2020-08-22 01:25:33,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:25:33,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:25:33,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:25:33,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:25:33,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:25:32" (1/3) ... [2020-08-22 01:25:33,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416bafb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:25:33, skipping insertion in model container [2020-08-22 01:25:33,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:32" (2/3) ... [2020-08-22 01:25:33,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416bafb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:25:33, skipping insertion in model container [2020-08-22 01:25:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:25:33" (3/3) ... [2020-08-22 01:25:33,578 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-22 01:25:33,588 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:25:33,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:25:33,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:25:33,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:25:33,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:25:33,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:25:33,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:25:33,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:25:33,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:25:33,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:25:33,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:25:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 01:25:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 01:25:33,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:33,694 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 01:25:33,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-22 01:25:33,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:33,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307342825] [2020-08-22 01:25:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:34,029 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 01:25:34,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307342825] [2020-08-22 01:25:34,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:34,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:34,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983069699] [2020-08-22 01:25:34,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:34,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:34,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:34,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:34,052 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-22 01:25:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:34,377 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-22 01:25:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:34,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-22 01:25:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:34,393 INFO L225 Difference]: With dead ends: 362 [2020-08-22 01:25:34,393 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 01:25:34,398 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 01:25:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 01:25:34,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-22 01:25:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 01:25:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-22 01:25:34,457 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-22 01:25:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:34,457 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-22 01:25:34,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-22 01:25:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 01:25:34,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:34,460 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 01:25:34,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:25:34,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-22 01:25:34,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:34,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478899256] [2020-08-22 01:25:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:34,559 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 01:25:34,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478899256] [2020-08-22 01:25:34,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:34,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:34,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934314265] [2020-08-22 01:25:34,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:34,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:34,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:34,563 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-22 01:25:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:34,783 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-22 01:25:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:34,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 01:25:34,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:34,787 INFO L225 Difference]: With dead ends: 363 [2020-08-22 01:25:34,787 INFO L226 Difference]: Without dead ends: 199 [2020-08-22 01:25:34,789 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 01:25:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-22 01:25:34,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-22 01:25:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-22 01:25:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-22 01:25:34,805 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-22 01:25:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:34,806 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-22 01:25:34,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-22 01:25:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 01:25:34,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:34,808 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 01:25:34,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:25:34,808 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-22 01:25:34,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:34,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163309454] [2020-08-22 01:25:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:34,902 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 01:25:34,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163309454] [2020-08-22 01:25:34,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:34,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:34,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333942276] [2020-08-22 01:25:34,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:34,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:34,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:34,905 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-22 01:25:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:35,174 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-22 01:25:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:35,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 01:25:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:35,176 INFO L225 Difference]: With dead ends: 393 [2020-08-22 01:25:35,177 INFO L226 Difference]: Without dead ends: 207 [2020-08-22 01:25:35,178 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 01:25:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-22 01:25:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-22 01:25:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 01:25:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-22 01:25:35,193 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-22 01:25:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:35,193 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-22 01:25:35,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-22 01:25:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 01:25:35,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:35,195 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 01:25:35,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:25:35,196 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:35,196 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-22 01:25:35,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:35,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979207376] [2020-08-22 01:25:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:35,264 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 01:25:35,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979207376] [2020-08-22 01:25:35,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:35,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:35,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279432749] [2020-08-22 01:25:35,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:35,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:35,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:35,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:35,267 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-22 01:25:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:35,489 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-22 01:25:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:35,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 01:25:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:35,491 INFO L225 Difference]: With dead ends: 398 [2020-08-22 01:25:35,491 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 01:25:35,493 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 01:25:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 01:25:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 01:25:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 01:25:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-22 01:25:35,506 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-22 01:25:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:35,506 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-22 01:25:35,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-22 01:25:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 01:25:35,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:35,508 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 01:25:35,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:25:35,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-22 01:25:35,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:35,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247983058] [2020-08-22 01:25:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:35,600 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 01:25:35,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247983058] [2020-08-22 01:25:35,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:35,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:35,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871158549] [2020-08-22 01:25:35,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:35,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:35,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:35,603 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-22 01:25:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:35,795 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-22 01:25:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:35,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-22 01:25:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:35,798 INFO L225 Difference]: With dead ends: 409 [2020-08-22 01:25:35,798 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 01:25:35,799 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 01:25:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 01:25:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 01:25:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 01:25:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-22 01:25:35,812 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-22 01:25:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:35,813 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-22 01:25:35,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-22 01:25:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 01:25:35,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:35,815 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 01:25:35,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:25:35,815 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:35,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-22 01:25:35,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:35,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253619856] [2020-08-22 01:25:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:35,879 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 01:25:35,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253619856] [2020-08-22 01:25:35,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:35,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:35,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719865847] [2020-08-22 01:25:35,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:35,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:35,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:35,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:35,881 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-22 01:25:36,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:36,078 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-22 01:25:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:36,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-22 01:25:36,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:36,080 INFO L225 Difference]: With dead ends: 409 [2020-08-22 01:25:36,080 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 01:25:36,081 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 01:25:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 01:25:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 01:25:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 01:25:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-22 01:25:36,091 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-22 01:25:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:36,091 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-22 01:25:36,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-22 01:25:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 01:25:36,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:36,093 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 01:25:36,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:25:36,093 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-22 01:25:36,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:36,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717294930] [2020-08-22 01:25:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:36,144 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 01:25:36,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717294930] [2020-08-22 01:25:36,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:36,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:36,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164785059] [2020-08-22 01:25:36,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:36,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:36,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:36,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:36,147 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-22 01:25:36,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:36,334 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-22 01:25:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:36,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 01:25:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:36,336 INFO L225 Difference]: With dead ends: 409 [2020-08-22 01:25:36,337 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 01:25:36,337 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 01:25:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 01:25:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 01:25:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 01:25:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-22 01:25:36,347 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-22 01:25:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:36,348 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-22 01:25:36,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-22 01:25:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 01:25:36,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:36,349 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 01:25:36,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:25:36,350 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-22 01:25:36,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:36,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183891368] [2020-08-22 01:25:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:36,413 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 01:25:36,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183891368] [2020-08-22 01:25:36,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:36,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:25:36,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067178644] [2020-08-22 01:25:36,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:25:36,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:36,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:25:36,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:25:36,415 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-22 01:25:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:36,755 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-22 01:25:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:25:36,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-22 01:25:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:36,758 INFO L225 Difference]: With dead ends: 605 [2020-08-22 01:25:36,758 INFO L226 Difference]: Without dead ends: 412 [2020-08-22 01:25:36,759 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 01:25:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-22 01:25:36,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-22 01:25:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-22 01:25:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-22 01:25:36,779 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-22 01:25:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:36,779 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-22 01:25:36,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:25:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-22 01:25:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 01:25:36,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:36,781 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 01:25:36,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:25:36,781 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:36,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:36,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-22 01:25:36,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:36,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832335330] [2020-08-22 01:25:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:36,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:36,841 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 01:25:36,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832335330] [2020-08-22 01:25:36,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:36,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:36,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110512931] [2020-08-22 01:25:36,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:36,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:36,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:36,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:36,848 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-22 01:25:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:37,092 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-22 01:25:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:37,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-22 01:25:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:37,096 INFO L225 Difference]: With dead ends: 847 [2020-08-22 01:25:37,096 INFO L226 Difference]: Without dead ends: 472 [2020-08-22 01:25:37,097 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 01:25:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-22 01:25:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-22 01:25:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-22 01:25:37,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-22 01:25:37,124 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-22 01:25:37,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:37,124 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-22 01:25:37,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:37,124 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-22 01:25:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 01:25:37,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:37,127 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 01:25:37,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:25:37,127 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:37,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-22 01:25:37,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:37,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642675564] [2020-08-22 01:25:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:37,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:37,185 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 01:25:37,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642675564] [2020-08-22 01:25:37,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:37,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:37,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493236239] [2020-08-22 01:25:37,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:37,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:37,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:37,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:37,187 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-22 01:25:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:37,469 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-22 01:25:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:37,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-22 01:25:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:37,472 INFO L225 Difference]: With dead ends: 936 [2020-08-22 01:25:37,473 INFO L226 Difference]: Without dead ends: 495 [2020-08-22 01:25:37,474 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 01:25:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-22 01:25:37,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-22 01:25:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-22 01:25:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-22 01:25:37,496 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-22 01:25:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:37,496 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-22 01:25:37,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-22 01:25:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 01:25:37,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:37,498 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 01:25:37,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:25:37,499 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:37,499 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-22 01:25:37,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:37,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986591671] [2020-08-22 01:25:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:37,550 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 01:25:37,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986591671] [2020-08-22 01:25:37,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:37,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:37,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371742110] [2020-08-22 01:25:37,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:37,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:37,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:37,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:37,552 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-22 01:25:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:37,764 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-22 01:25:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:37,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-22 01:25:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:37,768 INFO L225 Difference]: With dead ends: 993 [2020-08-22 01:25:37,768 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 01:25:37,769 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 01:25:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 01:25:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 01:25:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 01:25:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-22 01:25:37,792 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-22 01:25:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:37,793 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-22 01:25:37,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-22 01:25:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 01:25:37,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:37,794 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 01:25:37,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:25:37,795 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-22 01:25:37,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:37,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646468146] [2020-08-22 01:25:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:37,857 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 01:25:37,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646468146] [2020-08-22 01:25:37,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:37,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:37,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730891435] [2020-08-22 01:25:37,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:37,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:37,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:37,859 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-22 01:25:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:38,080 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-22 01:25:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:38,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 01:25:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:38,084 INFO L225 Difference]: With dead ends: 1027 [2020-08-22 01:25:38,084 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 01:25:38,085 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 01:25:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 01:25:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 01:25:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 01:25:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-22 01:25:38,108 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-22 01:25:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:38,109 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-22 01:25:38,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-22 01:25:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 01:25:38,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:38,110 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 01:25:38,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 01:25:38,111 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:38,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-22 01:25:38,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:38,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996032827] [2020-08-22 01:25:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:38,156 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 01:25:38,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996032827] [2020-08-22 01:25:38,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:38,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:38,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299971951] [2020-08-22 01:25:38,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:38,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:38,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:38,158 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-22 01:25:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:38,386 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-22 01:25:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:38,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 01:25:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:38,389 INFO L225 Difference]: With dead ends: 1074 [2020-08-22 01:25:38,390 INFO L226 Difference]: Without dead ends: 576 [2020-08-22 01:25:38,391 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 01:25:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-22 01:25:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-22 01:25:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-22 01:25:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-22 01:25:38,416 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-22 01:25:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:38,416 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-22 01:25:38,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-22 01:25:38,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 01:25:38,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:38,418 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 01:25:38,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 01:25:38,418 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:38,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-22 01:25:38,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:38,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131141364] [2020-08-22 01:25:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:38,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:38,467 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 01:25:38,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131141364] [2020-08-22 01:25:38,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:38,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:38,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879323124] [2020-08-22 01:25:38,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:38,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:38,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:38,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:38,469 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-22 01:25:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:38,719 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-22 01:25:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:38,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-22 01:25:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:38,725 INFO L225 Difference]: With dead ends: 1184 [2020-08-22 01:25:38,725 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 01:25:38,727 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 01:25:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 01:25:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 01:25:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 01:25:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-22 01:25:38,770 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-22 01:25:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:38,771 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-22 01:25:38,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:38,771 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-22 01:25:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 01:25:38,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:38,774 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 01:25:38,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 01:25:38,774 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:38,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-22 01:25:38,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:38,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461712272] [2020-08-22 01:25:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:38,885 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 01:25:38,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461712272] [2020-08-22 01:25:38,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:38,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:38,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588360610] [2020-08-22 01:25:38,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:38,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:38,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:38,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:38,888 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-22 01:25:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:39,197 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-22 01:25:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:39,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-22 01:25:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:39,202 INFO L225 Difference]: With dead ends: 1227 [2020-08-22 01:25:39,202 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 01:25:39,206 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 01:25:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 01:25:39,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 01:25:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 01:25:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-22 01:25:39,244 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-22 01:25:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:39,244 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-22 01:25:39,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-22 01:25:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 01:25:39,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:39,246 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 01:25:39,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 01:25:39,246 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:39,247 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-22 01:25:39,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:39,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269446331] [2020-08-22 01:25:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:39,324 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 01:25:39,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269446331] [2020-08-22 01:25:39,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:39,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:39,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690414493] [2020-08-22 01:25:39,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:39,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:39,328 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-22 01:25:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:39,544 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-22 01:25:39,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:39,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-22 01:25:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:39,548 INFO L225 Difference]: With dead ends: 1223 [2020-08-22 01:25:39,548 INFO L226 Difference]: Without dead ends: 619 [2020-08-22 01:25:39,551 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 01:25:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-22 01:25:39,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-22 01:25:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 01:25:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-22 01:25:39,585 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-22 01:25:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:39,585 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-22 01:25:39,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-22 01:25:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 01:25:39,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:39,587 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 01:25:39,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 01:25:39,587 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-22 01:25:39,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:39,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404544355] [2020-08-22 01:25:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:39,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:39,664 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 01:25:39,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404544355] [2020-08-22 01:25:39,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:39,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:39,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797206398] [2020-08-22 01:25:39,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:39,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:39,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:39,667 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-22 01:25:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:39,865 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-22 01:25:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:39,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-22 01:25:39,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:39,869 INFO L225 Difference]: With dead ends: 1281 [2020-08-22 01:25:39,869 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 01:25:39,871 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 01:25:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 01:25:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 01:25:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 01:25:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-22 01:25:39,910 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-22 01:25:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:39,910 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-22 01:25:39,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-22 01:25:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 01:25:39,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:39,914 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 01:25:39,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 01:25:39,914 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-22 01:25:39,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:39,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828796330] [2020-08-22 01:25:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:39,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:39,981 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 01:25:39,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828796330] [2020-08-22 01:25:39,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:39,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:39,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099296620] [2020-08-22 01:25:39,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:39,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:39,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:39,987 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-22 01:25:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:40,249 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-22 01:25:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:40,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-22 01:25:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:40,256 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 01:25:40,256 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 01:25:40,259 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 01:25:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 01:25:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 01:25:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 01:25:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-22 01:25:40,310 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-22 01:25:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:40,311 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-22 01:25:40,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-22 01:25:40,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-22 01:25:40,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:40,318 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 01:25:40,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 01:25:40,319 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-22 01:25:40,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:40,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237925865] [2020-08-22 01:25:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:40,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:40,422 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 01:25:40,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237925865] [2020-08-22 01:25:40,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:40,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:40,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684916788] [2020-08-22 01:25:40,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:40,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:40,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:40,426 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-22 01:25:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:40,778 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-22 01:25:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:40,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-22 01:25:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:40,784 INFO L225 Difference]: With dead ends: 1349 [2020-08-22 01:25:40,784 INFO L226 Difference]: Without dead ends: 713 [2020-08-22 01:25:40,786 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 01:25:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-22 01:25:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-22 01:25:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-22 01:25:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-22 01:25:40,850 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-22 01:25:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:40,851 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-22 01:25:40,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-22 01:25:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-22 01:25:40,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:40,855 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 01:25:40,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 01:25:40,855 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:40,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-22 01:25:40,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:40,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563555991] [2020-08-22 01:25:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:40,935 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 01:25:40,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563555991] [2020-08-22 01:25:40,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:40,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:40,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19626536] [2020-08-22 01:25:40,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:40,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:40,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:40,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:40,938 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-22 01:25:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:41,278 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-22 01:25:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:41,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-22 01:25:41,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:41,284 INFO L225 Difference]: With dead ends: 1406 [2020-08-22 01:25:41,285 INFO L226 Difference]: Without dead ends: 714 [2020-08-22 01:25:41,287 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 01:25:41,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-22 01:25:41,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-22 01:25:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 01:25:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-22 01:25:41,351 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-22 01:25:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:41,352 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-22 01:25:41,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-22 01:25:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 01:25:41,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:41,354 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 01:25:41,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 01:25:41,355 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:41,355 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-22 01:25:41,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:41,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858323306] [2020-08-22 01:25:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:41,463 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 01:25:41,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858323306] [2020-08-22 01:25:41,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:41,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:41,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818054930] [2020-08-22 01:25:41,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:41,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:41,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:41,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:41,467 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-22 01:25:41,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:41,732 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-22 01:25:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:41,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-22 01:25:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:41,737 INFO L225 Difference]: With dead ends: 1438 [2020-08-22 01:25:41,737 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 01:25:41,741 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 01:25:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 01:25:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 01:25:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 01:25:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-22 01:25:41,804 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-22 01:25:41,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:41,804 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-22 01:25:41,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-22 01:25:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-22 01:25:41,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:41,807 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 01:25:41,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 01:25:41,807 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:41,808 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-22 01:25:41,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:41,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874550829] [2020-08-22 01:25:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:41,887 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 01:25:41,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874550829] [2020-08-22 01:25:41,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:41,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:41,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509432007] [2020-08-22 01:25:41,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:41,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:41,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:41,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:41,890 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-22 01:25:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:42,151 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-22 01:25:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:42,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-22 01:25:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:42,158 INFO L225 Difference]: With dead ends: 1479 [2020-08-22 01:25:42,159 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 01:25:42,162 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 01:25:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 01:25:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 01:25:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 01:25:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-22 01:25:42,219 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-22 01:25:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:42,220 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-22 01:25:42,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-22 01:25:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 01:25:42,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:42,226 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 01:25:42,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 01:25:42,226 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:42,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:42,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-22 01:25:42,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:42,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108398077] [2020-08-22 01:25:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:42,322 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 01:25:42,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108398077] [2020-08-22 01:25:42,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:42,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:42,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541273099] [2020-08-22 01:25:42,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:42,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:42,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:42,333 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-22 01:25:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:42,534 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-22 01:25:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:42,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-22 01:25:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:42,538 INFO L225 Difference]: With dead ends: 1515 [2020-08-22 01:25:42,538 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 01:25:42,540 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 01:25:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 01:25:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 01:25:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 01:25:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-22 01:25:42,578 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-22 01:25:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:42,578 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-22 01:25:42,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-22 01:25:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 01:25:42,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:42,580 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 01:25:42,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 01:25:42,581 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-22 01:25:42,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:42,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216925451] [2020-08-22 01:25:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:42,677 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 01:25:42,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216925451] [2020-08-22 01:25:42,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:42,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:42,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915831177] [2020-08-22 01:25:42,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:42,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:42,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:42,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:42,679 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-22 01:25:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:42,932 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-22 01:25:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:42,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-22 01:25:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:42,936 INFO L225 Difference]: With dead ends: 1547 [2020-08-22 01:25:42,936 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 01:25:42,937 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 01:25:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 01:25:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 01:25:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 01:25:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-22 01:25:42,975 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-22 01:25:42,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:42,976 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-22 01:25:42,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-22 01:25:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 01:25:42,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:42,978 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 01:25:42,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 01:25:42,978 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-22 01:25:42,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:42,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357405183] [2020-08-22 01:25:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:43,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:43,047 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 01:25:43,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357405183] [2020-08-22 01:25:43,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:43,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:43,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572970504] [2020-08-22 01:25:43,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:43,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:43,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:43,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:43,049 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-22 01:25:43,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:43,248 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-22 01:25:43,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:43,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-22 01:25:43,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:43,253 INFO L225 Difference]: With dead ends: 1573 [2020-08-22 01:25:43,253 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 01:25:43,255 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 01:25:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 01:25:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 01:25:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 01:25:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-22 01:25:43,310 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-22 01:25:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:43,310 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-22 01:25:43,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-22 01:25:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 01:25:43,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:43,315 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 01:25:43,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 01:25:43,316 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:43,318 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-22 01:25:43,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:43,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955421671] [2020-08-22 01:25:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:43,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:43,413 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 01:25:43,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955421671] [2020-08-22 01:25:43,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:43,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:43,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912800640] [2020-08-22 01:25:43,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:43,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:43,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:43,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:43,417 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-22 01:25:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:43,760 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-22 01:25:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:43,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-22 01:25:43,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:43,766 INFO L225 Difference]: With dead ends: 1601 [2020-08-22 01:25:43,766 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 01:25:43,769 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 01:25:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 01:25:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 01:25:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 01:25:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-22 01:25:43,834 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-22 01:25:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:43,834 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-22 01:25:43,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-22 01:25:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 01:25:43,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:43,839 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 01:25:43,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 01:25:43,840 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:43,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-22 01:25:43,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:43,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344158799] [2020-08-22 01:25:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:43,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:43,922 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 01:25:43,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344158799] [2020-08-22 01:25:43,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:43,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:43,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616156443] [2020-08-22 01:25:43,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:43,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:43,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:43,924 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-22 01:25:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:44,269 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-22 01:25:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:44,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 01:25:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:44,276 INFO L225 Difference]: With dead ends: 1656 [2020-08-22 01:25:44,276 INFO L226 Difference]: Without dead ends: 866 [2020-08-22 01:25:44,278 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 01:25:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-22 01:25:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-22 01:25:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-22 01:25:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-22 01:25:44,348 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-22 01:25:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:44,349 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-22 01:25:44,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-22 01:25:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 01:25:44,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:44,354 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 01:25:44,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 01:25:44,355 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:44,355 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-22 01:25:44,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:44,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526858931] [2020-08-22 01:25:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:44,435 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 01:25:44,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526858931] [2020-08-22 01:25:44,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:44,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:44,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379052332] [2020-08-22 01:25:44,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:44,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:44,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:44,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:44,438 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-22 01:25:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:44,789 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-22 01:25:44,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:44,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-22 01:25:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:44,795 INFO L225 Difference]: With dead ends: 1705 [2020-08-22 01:25:44,796 INFO L226 Difference]: Without dead ends: 850 [2020-08-22 01:25:44,798 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 01:25:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-22 01:25:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-22 01:25:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 01:25:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-22 01:25:44,877 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-22 01:25:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:44,877 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-22 01:25:44,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-22 01:25:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 01:25:44,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:44,882 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 01:25:44,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 01:25:44,883 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-22 01:25:44,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:44,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034670276] [2020-08-22 01:25:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:45,007 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 01:25:45,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034670276] [2020-08-22 01:25:45,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:45,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:45,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876265149] [2020-08-22 01:25:45,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:45,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:45,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:45,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:45,009 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-22 01:25:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:45,249 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-22 01:25:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:45,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-22 01:25:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:45,253 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 01:25:45,253 INFO L226 Difference]: Without dead ends: 848 [2020-08-22 01:25:45,255 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 01:25:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-22 01:25:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-22 01:25:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 01:25:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-22 01:25:45,299 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-22 01:25:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:45,299 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-22 01:25:45,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-22 01:25:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 01:25:45,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:45,302 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 01:25:45,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 01:25:45,302 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:45,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-22 01:25:45,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:45,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12181594] [2020-08-22 01:25:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:45,358 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 01:25:45,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12181594] [2020-08-22 01:25:45,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:45,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:25:45,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139381584] [2020-08-22 01:25:45,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:25:45,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:45,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:25:45,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:25:45,361 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-22 01:25:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:45,609 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-22 01:25:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:25:45,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 01:25:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:45,615 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 01:25:45,615 INFO L226 Difference]: Without dead ends: 831 [2020-08-22 01:25:45,617 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 01:25:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-22 01:25:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-22 01:25:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-22 01:25:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-22 01:25:45,665 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-22 01:25:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:45,665 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-22 01:25:45,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:25:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-22 01:25:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 01:25:45,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:45,668 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 01:25:45,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 01:25:45,668 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:45,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-22 01:25:45,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:45,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765416636] [2020-08-22 01:25:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:45,724 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 01:25:45,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765416636] [2020-08-22 01:25:45,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:45,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:25:45,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115370684] [2020-08-22 01:25:45,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:25:45,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:25:45,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:25:45,726 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-22 01:25:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:45,830 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-22 01:25:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:25:45,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 01:25:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:45,838 INFO L225 Difference]: With dead ends: 2417 [2020-08-22 01:25:45,838 INFO L226 Difference]: Without dead ends: 1611 [2020-08-22 01:25:45,840 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 01:25:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-22 01:25:45,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-22 01:25:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-22 01:25:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-22 01:25:45,899 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-22 01:25:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:45,899 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-22 01:25:45,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:25:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-22 01:25:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 01:25:45,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:45,901 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 01:25:45,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 01:25:45,902 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-22 01:25:45,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:45,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765651711] [2020-08-22 01:25:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:45,981 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 01:25:45,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765651711] [2020-08-22 01:25:45,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:45,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:25:45,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260035976] [2020-08-22 01:25:45,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:25:45,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:25:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:25:45,983 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-22 01:25:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:46,078 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-22 01:25:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:25:46,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 01:25:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:46,086 INFO L225 Difference]: With dead ends: 2416 [2020-08-22 01:25:46,086 INFO L226 Difference]: Without dead ends: 1608 [2020-08-22 01:25:46,089 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 01:25:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-22 01:25:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-22 01:25:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 01:25:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-22 01:25:46,186 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-22 01:25:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:46,186 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-22 01:25:46,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:25:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-22 01:25:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 01:25:46,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:46,189 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 01:25:46,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 01:25:46,189 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:46,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:46,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-22 01:25:46,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:46,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360917819] [2020-08-22 01:25:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:46,364 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 01:25:46,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360917819] [2020-08-22 01:25:46,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:46,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:25:46,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614268789] [2020-08-22 01:25:46,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:25:46,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:46,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:25:46,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:25:46,367 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-22 01:25:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:46,613 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-22 01:25:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:25:46,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-22 01:25:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:46,630 INFO L225 Difference]: With dead ends: 4752 [2020-08-22 01:25:46,630 INFO L226 Difference]: Without dead ends: 3159 [2020-08-22 01:25:46,634 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 01:25:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-22 01:25:46,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-22 01:25:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 01:25:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-22 01:25:46,791 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-22 01:25:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:46,791 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-22 01:25:46,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:25:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-22 01:25:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 01:25:46,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:46,796 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 01:25:46,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 01:25:46,796 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:46,797 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-22 01:25:46,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:46,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614480913] [2020-08-22 01:25:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:46,876 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 01:25:46,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614480913] [2020-08-22 01:25:46,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:46,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:25:46,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863561804] [2020-08-22 01:25:46,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:25:46,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:46,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:25:46,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:25:46,878 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-22 01:25:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:47,171 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-22 01:25:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:25:47,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-22 01:25:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:47,186 INFO L225 Difference]: With dead ends: 4792 [2020-08-22 01:25:47,186 INFO L226 Difference]: Without dead ends: 3199 [2020-08-22 01:25:47,190 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 01:25:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-22 01:25:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-22 01:25:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-22 01:25:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-22 01:25:47,414 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-22 01:25:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:47,414 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-22 01:25:47,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:25:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-22 01:25:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 01:25:47,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:47,418 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 01:25:47,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 01:25:47,419 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-22 01:25:47,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:47,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143995094] [2020-08-22 01:25:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:25:47,456 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:25:47,457 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:25:47,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 01:25:47,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:25:47 BoogieIcfgContainer [2020-08-22 01:25:47,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:25:47,513 INFO L168 Benchmark]: Toolchain (without parser) took 15469.66 ms. Allocated memory was 141.6 MB in the beginning and 519.6 MB in the end (delta: 378.0 MB). Free memory was 103.8 MB in the beginning and 483.6 MB in the end (delta: -379.7 MB). Peak memory consumption was 352.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:25:47,514 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 01:25:47,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.72 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 178.8 MB in the end (delta: -75.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:25:47,515 INFO L168 Benchmark]: Boogie Preprocessor took 67.55 ms. Allocated memory is still 205.0 MB. Free memory was 178.8 MB in the beginning and 175.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-22 01:25:47,515 INFO L168 Benchmark]: RCFGBuilder took 901.85 ms. Allocated memory is still 205.0 MB. Free memory was 175.9 MB in the beginning and 117.7 MB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:25:47,516 INFO L168 Benchmark]: TraceAbstraction took 13943.48 ms. Allocated memory was 205.0 MB in the beginning and 519.6 MB in the end (delta: 314.6 MB). Free memory was 117.7 MB in the beginning and 483.6 MB in the end (delta: -365.9 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. [2020-08-22 01:25:47,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 550.72 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 178.8 MB in the end (delta: -75.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.55 ms. Allocated memory is still 205.0 MB. Free memory was 178.8 MB in the beginning and 175.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 901.85 ms. Allocated memory is still 205.0 MB. Free memory was 175.9 MB in the beginning and 117.7 MB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13943.48 ms. Allocated memory was 205.0 MB in the beginning and 519.6 MB in the end (delta: 314.6 MB). Free memory was 117.7 MB in the beginning and 483.6 MB in the end (delta: -365.9 MB). Peak memory consumption was 302.8 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: 13.8s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 8.8s, 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, 4.9s 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: 1.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.6s 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...