/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-c90d42b [2020-09-25 05:30:25,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:30:25,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:30:25,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:30:25,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:30:25,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:30:25,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:30:25,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:30:25,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:30:25,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:30:25,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:30:25,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:30:25,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:30:25,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:30:25,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:30:25,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:30:25,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:30:25,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:30:25,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:30:25,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:30:25,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:30:25,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:30:25,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:30:25,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:30:25,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:30:25,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:30:25,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:30:25,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:30:25,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:30:25,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:30:25,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:30:25,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:30:25,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:30:25,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:30:25,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:30:25,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:30:25,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:30:25,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:30:25,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:30:25,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:30:25,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:30:25,323 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 [2020-09-25 05:30:25,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:30:25,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:30:25,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:30:25,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:30:25,350 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:30:25,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:30:25,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:30:25,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:30:25,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:30:25,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:30:25,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:30:25,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:30:25,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:30:25,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:30:25,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:30:25,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:30:25,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:30:25,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:30:25,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:30:25,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:30:25,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:30:25,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:25,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:30:25,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:30:25,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:30:25,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:30:25,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:30:25,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:30:25,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:30:25,355 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:30:25,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:30:25,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:30:25,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:30:25,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:30:25,856 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:30:25,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 05:30:25,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a65e81f/7f48bde0880c4a02befdc7896affa753/FLAG836d22085 [2020-09-25 05:30:26,544 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:30:26,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 05:30:26,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a65e81f/7f48bde0880c4a02befdc7896affa753/FLAG836d22085 [2020-09-25 05:30:26,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a65e81f/7f48bde0880c4a02befdc7896affa753 [2020-09-25 05:30:26,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:30:26,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:30:26,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:26,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:30:26,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:30:26,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:26" (1/1) ... [2020-09-25 05:30:26,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:26, skipping insertion in model container [2020-09-25 05:30:26,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:26" (1/1) ... [2020-09-25 05:30:26,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:30:26,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:30:27,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:27,304 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:30:27,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:27,488 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:30:27,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27 WrapperNode [2020-09-25 05:30:27,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:27,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:30:27,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:30:27,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:30:27,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... [2020-09-25 05:30:27,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... [2020-09-25 05:30:27,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... [2020-09-25 05:30:27,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... [2020-09-25 05:30:27,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... [2020-09-25 05:30:27,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... [2020-09-25 05:30:27,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... [2020-09-25 05:30:27,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:30:27,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:30:27,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:30:27,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:30:27,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:27,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:30:27,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:30:27,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 05:30:27,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:30:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:30:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 05:30:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:30:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 05:30:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 05:30:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 05:30:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:30:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:30:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:30:27,901 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 05:30:28,612 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 05:30:28,613 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 05:30:28,630 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:30:28,631 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:30:28,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:28 BoogieIcfgContainer [2020-09-25 05:30:28,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:30:28,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:30:28,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:30:28,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:30:28,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:30:26" (1/3) ... [2020-09-25 05:30:28,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:28, skipping insertion in model container [2020-09-25 05:30:28,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:27" (2/3) ... [2020-09-25 05:30:28,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:28, skipping insertion in model container [2020-09-25 05:30:28,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:28" (3/3) ... [2020-09-25 05:30:28,653 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 05:30:28,667 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:30:28,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:30:28,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:30:28,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:30:28,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:30:28,763 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:30:28,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:30:28,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:30:28,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:30:28,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:30:28,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:30:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 05:30:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 05:30:28,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:28,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:28,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:28,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 05:30:28,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:28,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197060630] [2020-09-25 05:30:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:30,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:30,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 05:30:30,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:30:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-09-25 05:30:30,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:30,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-09-25 05:30:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:30,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:30:30,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:30,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:30,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:30,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:30:30,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:30,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:30,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197060630] [2020-09-25 05:30:30,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:30,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:30,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140339695] [2020-09-25 05:30:30,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:30,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:30,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:30,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:30,733 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 3 states. [2020-09-25 05:30:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:31,157 INFO L93 Difference]: Finished difference Result 864 states and 1153 transitions. [2020-09-25 05:30:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:31,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-09-25 05:30:31,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:31,201 INFO L225 Difference]: With dead ends: 864 [2020-09-25 05:30:31,201 INFO L226 Difference]: Without dead ends: 452 [2020-09-25 05:30:31,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:31,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-09-25 05:30:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 450. [2020-09-25 05:30:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-09-25 05:30:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 545 transitions. [2020-09-25 05:30:31,338 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 545 transitions. Word has length 161 [2020-09-25 05:30:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:31,341 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 545 transitions. [2020-09-25 05:30:31,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 545 transitions. [2020-09-25 05:30:31,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 05:30:31,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:31,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:31,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:30:31,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1376475421, now seen corresponding path program 1 times [2020-09-25 05:30:31,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:31,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113144888] [2020-09-25 05:30:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:31,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 05:30:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-09-25 05:30:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:32,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:30:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 05:30:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:30:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:32,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:32,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:32,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:32,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:32,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:32,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113144888] [2020-09-25 05:30:32,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:32,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:30:32,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280608698] [2020-09-25 05:30:32,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:30:32,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:32,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:30:32,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:30:32,155 INFO L87 Difference]: Start difference. First operand 450 states and 545 transitions. Second operand 4 states. [2020-09-25 05:30:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:32,476 INFO L93 Difference]: Finished difference Result 835 states and 1035 transitions. [2020-09-25 05:30:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:30:32,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 05:30:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:32,489 INFO L225 Difference]: With dead ends: 835 [2020-09-25 05:30:32,490 INFO L226 Difference]: Without dead ends: 524 [2020-09-25 05:30:32,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:30:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-09-25 05:30:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 488. [2020-09-25 05:30:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-09-25 05:30:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 588 transitions. [2020-09-25 05:30:32,533 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 588 transitions. Word has length 166 [2020-09-25 05:30:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:32,533 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 588 transitions. [2020-09-25 05:30:32,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:30:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 588 transitions. [2020-09-25 05:30:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 05:30:32,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:32,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:32,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:30:32,540 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1922098023, now seen corresponding path program 1 times [2020-09-25 05:30:32,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:32,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002513049] [2020-09-25 05:30:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:34,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:34,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:30:34,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:30:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1911 [2020-09-25 05:30:34,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:34,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:34,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:34,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 05:30:34,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:34,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:34,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:34,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:34,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:34,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:34,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:34,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:34,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002513049] [2020-09-25 05:30:34,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:34,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:34,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511293347] [2020-09-25 05:30:34,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:34,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:34,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:34,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:34,556 INFO L87 Difference]: Start difference. First operand 488 states and 588 transitions. Second operand 3 states. [2020-09-25 05:30:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:34,921 INFO L93 Difference]: Finished difference Result 898 states and 1135 transitions. [2020-09-25 05:30:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:34,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-09-25 05:30:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:34,929 INFO L225 Difference]: With dead ends: 898 [2020-09-25 05:30:34,929 INFO L226 Difference]: Without dead ends: 549 [2020-09-25 05:30:34,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-09-25 05:30:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 533. [2020-09-25 05:30:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-09-25 05:30:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 657 transitions. [2020-09-25 05:30:34,950 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 657 transitions. Word has length 167 [2020-09-25 05:30:34,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:34,951 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 657 transitions. [2020-09-25 05:30:34,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:34,951 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 657 transitions. [2020-09-25 05:30:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 05:30:34,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:34,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:34,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:30:34,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:34,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:34,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1422568045, now seen corresponding path program 1 times [2020-09-25 05:30:34,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:34,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125427312] [2020-09-25 05:30:34,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:35,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:35,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:30:35,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-09-25 05:30:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:35,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:30:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 05:30:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:30:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:30:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:35,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:35,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:35,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:35,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:35,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:30:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:35,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125427312] [2020-09-25 05:30:35,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:35,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:30:35,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832685193] [2020-09-25 05:30:35,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:30:35,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:35,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:30:35,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:30:35,684 INFO L87 Difference]: Start difference. First operand 533 states and 657 transitions. Second operand 4 states. [2020-09-25 05:30:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:35,918 INFO L93 Difference]: Finished difference Result 964 states and 1220 transitions. [2020-09-25 05:30:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:30:35,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 05:30:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:35,922 INFO L225 Difference]: With dead ends: 964 [2020-09-25 05:30:35,923 INFO L226 Difference]: Without dead ends: 570 [2020-09-25 05:30:35,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:30:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-09-25 05:30:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-09-25 05:30:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-25 05:30:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 685 transitions. [2020-09-25 05:30:35,943 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 685 transitions. Word has length 167 [2020-09-25 05:30:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:35,944 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 685 transitions. [2020-09-25 05:30:35,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:30:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 685 transitions. [2020-09-25 05:30:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 05:30:35,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:35,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:35,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:30:35,948 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:35,948 INFO L82 PathProgramCache]: Analyzing trace with hash -358793535, now seen corresponding path program 1 times [2020-09-25 05:30:35,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:35,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172803917] [2020-09-25 05:30:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 05:30:38,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:30:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-09-25 05:30:38,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:38,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 05:30:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:30:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:38,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:38,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:38,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:38,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:38,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172803917] [2020-09-25 05:30:38,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:38,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:38,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347241836] [2020-09-25 05:30:38,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:38,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:38,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:38,279 INFO L87 Difference]: Start difference. First operand 556 states and 685 transitions. Second operand 3 states. [2020-09-25 05:30:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:38,428 INFO L93 Difference]: Finished difference Result 988 states and 1245 transitions. [2020-09-25 05:30:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:38,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-25 05:30:38,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:38,433 INFO L225 Difference]: With dead ends: 988 [2020-09-25 05:30:38,433 INFO L226 Difference]: Without dead ends: 571 [2020-09-25 05:30:38,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-09-25 05:30:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-09-25 05:30:38,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-09-25 05:30:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 702 transitions. [2020-09-25 05:30:38,456 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 702 transitions. Word has length 168 [2020-09-25 05:30:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:38,457 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 702 transitions. [2020-09-25 05:30:38,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 702 transitions. [2020-09-25 05:30:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 05:30:38,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:38,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:38,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:30:38,461 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2095634517, now seen corresponding path program 1 times [2020-09-25 05:30:38,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:38,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471544612] [2020-09-25 05:30:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:40,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 05:30:40,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:30:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1739 [2020-09-25 05:30:40,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:40,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-25 05:30:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:30:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:40,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:40,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:40,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:40,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:40,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:40,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:30:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:40,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471544612] [2020-09-25 05:30:40,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:40,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:40,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044153092] [2020-09-25 05:30:40,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:40,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:40,323 INFO L87 Difference]: Start difference. First operand 571 states and 702 transitions. Second operand 3 states. [2020-09-25 05:30:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:40,608 INFO L93 Difference]: Finished difference Result 1064 states and 1363 transitions. [2020-09-25 05:30:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:40,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-25 05:30:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:40,616 INFO L225 Difference]: With dead ends: 1064 [2020-09-25 05:30:40,616 INFO L226 Difference]: Without dead ends: 632 [2020-09-25 05:30:40,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:40,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-09-25 05:30:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 605. [2020-09-25 05:30:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 05:30:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 753 transitions. [2020-09-25 05:30:40,654 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 753 transitions. Word has length 168 [2020-09-25 05:30:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:40,654 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 753 transitions. [2020-09-25 05:30:40,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 753 transitions. [2020-09-25 05:30:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 05:30:40,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:40,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:40,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:30:40,659 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1172377495, now seen corresponding path program 1 times [2020-09-25 05:30:40,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:40,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879145718] [2020-09-25 05:30:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:41,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 05:30:41,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:41,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 05:30:41,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:41,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 05:30:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 05:30:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:41,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:41,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:41,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:41,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:41,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:41,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879145718] [2020-09-25 05:30:41,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:41,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:41,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109397888] [2020-09-25 05:30:41,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:41,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:41,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:41,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:41,223 INFO L87 Difference]: Start difference. First operand 605 states and 753 transitions. Second operand 3 states. [2020-09-25 05:30:41,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:41,400 INFO L93 Difference]: Finished difference Result 1516 states and 1952 transitions. [2020-09-25 05:30:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:41,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-09-25 05:30:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:41,406 INFO L225 Difference]: With dead ends: 1516 [2020-09-25 05:30:41,407 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 05:30:41,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 05:30:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1048. [2020-09-25 05:30:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2020-09-25 05:30:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1319 transitions. [2020-09-25 05:30:41,437 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1319 transitions. Word has length 176 [2020-09-25 05:30:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:41,438 INFO L479 AbstractCegarLoop]: Abstraction has 1048 states and 1319 transitions. [2020-09-25 05:30:41,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1319 transitions. [2020-09-25 05:30:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:30:41,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:41,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:41,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:30:41,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203184, now seen corresponding path program 1 times [2020-09-25 05:30:41,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:41,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818587239] [2020-09-25 05:30:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:41,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 05:30:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-25 05:30:42,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:42,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:30:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:30:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 05:30:42,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:42,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:42,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:42,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:42,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:42,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:42,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:42,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818587239] [2020-09-25 05:30:42,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:42,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:30:42,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069725158] [2020-09-25 05:30:42,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:30:42,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:42,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:30:42,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:30:42,206 INFO L87 Difference]: Start difference. First operand 1048 states and 1319 transitions. Second operand 7 states. [2020-09-25 05:30:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:42,728 INFO L93 Difference]: Finished difference Result 2926 states and 3732 transitions. [2020-09-25 05:30:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:30:42,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-09-25 05:30:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:42,741 INFO L225 Difference]: With dead ends: 2926 [2020-09-25 05:30:42,741 INFO L226 Difference]: Without dead ends: 2017 [2020-09-25 05:30:42,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:30:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2020-09-25 05:30:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1644. [2020-09-25 05:30:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-09-25 05:30:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2098 transitions. [2020-09-25 05:30:42,820 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2098 transitions. Word has length 179 [2020-09-25 05:30:42,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:42,821 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2098 transitions. [2020-09-25 05:30:42,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:30:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2098 transitions. [2020-09-25 05:30:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 05:30:42,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:42,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:42,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:30:42,828 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:42,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-25 05:30:42,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:42,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345436395] [2020-09-25 05:30:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:43,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:43,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 05:30:43,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:43,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-25 05:30:43,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:43,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 05:30:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 05:30:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:43,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:43,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:43,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:43,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:43,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:43,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345436395] [2020-09-25 05:30:43,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:43,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:43,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694789389] [2020-09-25 05:30:43,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:43,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:43,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:43,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:43,232 INFO L87 Difference]: Start difference. First operand 1644 states and 2098 transitions. Second operand 3 states. [2020-09-25 05:30:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:43,466 INFO L93 Difference]: Finished difference Result 3151 states and 4097 transitions. [2020-09-25 05:30:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:43,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-25 05:30:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:43,478 INFO L225 Difference]: With dead ends: 3151 [2020-09-25 05:30:43,479 INFO L226 Difference]: Without dead ends: 2377 [2020-09-25 05:30:43,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-09-25 05:30:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2375. [2020-09-25 05:30:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-09-25 05:30:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3035 transitions. [2020-09-25 05:30:43,563 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3035 transitions. Word has length 202 [2020-09-25 05:30:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:43,564 INFO L479 AbstractCegarLoop]: Abstraction has 2375 states and 3035 transitions. [2020-09-25 05:30:43,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3035 transitions. [2020-09-25 05:30:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:30:43,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:43,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:43,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:30:43,574 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:43,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1593461350, now seen corresponding path program 1 times [2020-09-25 05:30:43,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:43,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016231570] [2020-09-25 05:30:43,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:44,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 05:30:44,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:44,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1340 [2020-09-25 05:30:44,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:44,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:30:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 05:30:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:45,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:30:45,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016231570] [2020-09-25 05:30:45,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:45,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:30:45,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463002657] [2020-09-25 05:30:45,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:30:45,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:45,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:30:45,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:30:45,067 INFO L87 Difference]: Start difference. First operand 2375 states and 3035 transitions. Second operand 6 states. [2020-09-25 05:30:45,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:45,414 INFO L93 Difference]: Finished difference Result 4653 states and 5996 transitions. [2020-09-25 05:30:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:30:45,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 05:30:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:45,428 INFO L225 Difference]: With dead ends: 4653 [2020-09-25 05:30:45,428 INFO L226 Difference]: Without dead ends: 2417 [2020-09-25 05:30:45,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:30:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2020-09-25 05:30:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2411. [2020-09-25 05:30:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2020-09-25 05:30:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3086 transitions. [2020-09-25 05:30:45,553 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3086 transitions. Word has length 203 [2020-09-25 05:30:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:45,554 INFO L479 AbstractCegarLoop]: Abstraction has 2411 states and 3086 transitions. [2020-09-25 05:30:45,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:30:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3086 transitions. [2020-09-25 05:30:45,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 05:30:45,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:45,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:45,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:30:45,567 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:45,568 INFO L82 PathProgramCache]: Analyzing trace with hash 438775901, now seen corresponding path program 1 times [2020-09-25 05:30:45,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:45,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884667232] [2020-09-25 05:30:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 05:30:46,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-09-25 05:30:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:30:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 05:30:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:47,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:47,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:47,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:47,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:30:47,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884667232] [2020-09-25 05:30:47,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:47,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:30:47,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108641564] [2020-09-25 05:30:47,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:30:47,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:30:47,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:30:47,116 INFO L87 Difference]: Start difference. First operand 2411 states and 3086 transitions. Second operand 6 states. [2020-09-25 05:30:47,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:47,497 INFO L93 Difference]: Finished difference Result 4776 states and 6158 transitions. [2020-09-25 05:30:47,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:30:47,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-09-25 05:30:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:47,511 INFO L225 Difference]: With dead ends: 4776 [2020-09-25 05:30:47,511 INFO L226 Difference]: Without dead ends: 2504 [2020-09-25 05:30:47,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:30:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2020-09-25 05:30:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2498. [2020-09-25 05:30:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2498 states. [2020-09-25 05:30:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3197 transitions. [2020-09-25 05:30:47,605 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3197 transitions. Word has length 208 [2020-09-25 05:30:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:47,606 INFO L479 AbstractCegarLoop]: Abstraction has 2498 states and 3197 transitions. [2020-09-25 05:30:47,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:30:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3197 transitions. [2020-09-25 05:30:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 05:30:47,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:47,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:47,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:30:47,613 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash -747548647, now seen corresponding path program 1 times [2020-09-25 05:30:47,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:47,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244713509] [2020-09-25 05:30:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:47,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:48,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 05:30:48,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-09-25 05:30:48,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:48,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 05:30:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:30:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:48,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 05:30:48,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244713509] [2020-09-25 05:30:48,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:48,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:48,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604920473] [2020-09-25 05:30:48,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:48,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:48,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:48,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:48,357 INFO L87 Difference]: Start difference. First operand 2498 states and 3197 transitions. Second operand 3 states. [2020-09-25 05:30:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:48,507 INFO L93 Difference]: Finished difference Result 7025 states and 9075 transitions. [2020-09-25 05:30:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:48,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-09-25 05:30:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:48,533 INFO L225 Difference]: With dead ends: 7025 [2020-09-25 05:30:48,533 INFO L226 Difference]: Without dead ends: 4666 [2020-09-25 05:30:48,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2020-09-25 05:30:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4664. [2020-09-25 05:30:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2020-09-25 05:30:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6011 transitions. [2020-09-25 05:30:48,706 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 6011 transitions. Word has length 208 [2020-09-25 05:30:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:48,707 INFO L479 AbstractCegarLoop]: Abstraction has 4664 states and 6011 transitions. [2020-09-25 05:30:48,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 6011 transitions. [2020-09-25 05:30:48,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 05:30:48,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:48,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:48,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:30:48,717 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:48,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1289279705, now seen corresponding path program 1 times [2020-09-25 05:30:48,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:48,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99468544] [2020-09-25 05:30:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:53,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:53,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 05:30:53,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:30:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:30:53,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:53,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-09-25 05:30:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:30:53,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:53,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:53,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:53,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:53,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:53,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:30:53,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99468544] [2020-09-25 05:30:53,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:53,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:53,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320835396] [2020-09-25 05:30:53,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:53,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:53,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:53,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:53,815 INFO L87 Difference]: Start difference. First operand 4664 states and 6011 transitions. Second operand 3 states. [2020-09-25 05:30:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:53,933 INFO L93 Difference]: Finished difference Result 8643 states and 11225 transitions. [2020-09-25 05:30:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:53,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-09-25 05:30:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:53,957 INFO L225 Difference]: With dead ends: 8643 [2020-09-25 05:30:53,958 INFO L226 Difference]: Without dead ends: 4010 [2020-09-25 05:30:53,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:53,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2020-09-25 05:30:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 4010. [2020-09-25 05:30:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4010 states. [2020-09-25 05:30:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 5081 transitions. [2020-09-25 05:30:54,135 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 5081 transitions. Word has length 209 [2020-09-25 05:30:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:54,135 INFO L479 AbstractCegarLoop]: Abstraction has 4010 states and 5081 transitions. [2020-09-25 05:30:54,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 5081 transitions. [2020-09-25 05:30:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 05:30:54,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:54,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:54,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 05:30:54,146 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:54,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:54,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1767645779, now seen corresponding path program 1 times [2020-09-25 05:30:54,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:54,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423767886] [2020-09-25 05:30:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:55,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:55,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 05:30:55,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:55,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-09-25 05:30:55,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:55,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:30:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 05:30:55,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:55,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:55,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:55,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:30:55,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423767886] [2020-09-25 05:30:55,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:55,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:30:55,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135556801] [2020-09-25 05:30:55,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:30:55,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:30:55,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:30:55,677 INFO L87 Difference]: Start difference. First operand 4010 states and 5081 transitions. Second operand 6 states. [2020-09-25 05:30:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:55,941 INFO L93 Difference]: Finished difference Result 7942 states and 10088 transitions. [2020-09-25 05:30:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:30:55,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-09-25 05:30:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:55,962 INFO L225 Difference]: With dead ends: 7942 [2020-09-25 05:30:55,962 INFO L226 Difference]: Without dead ends: 4071 [2020-09-25 05:30:55,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:30:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2020-09-25 05:30:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4021. [2020-09-25 05:30:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4021 states. [2020-09-25 05:30:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 5092 transitions. [2020-09-25 05:30:56,106 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 5092 transitions. Word has length 209 [2020-09-25 05:30:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:56,107 INFO L479 AbstractCegarLoop]: Abstraction has 4021 states and 5092 transitions. [2020-09-25 05:30:56,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:30:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 5092 transitions. [2020-09-25 05:30:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 05:30:56,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:56,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:56,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 05:30:56,119 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:56,120 INFO L82 PathProgramCache]: Analyzing trace with hash -478339839, now seen corresponding path program 1 times [2020-09-25 05:30:56,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:56,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960250042] [2020-09-25 05:30:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:56,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 05:30:56,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:30:56,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 05:30:56,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:56,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 05:30:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:30:56,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:56,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:56,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:56,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:56,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:56,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:30:56,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960250042] [2020-09-25 05:30:56,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:56,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:56,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514438937] [2020-09-25 05:30:56,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:56,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:56,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:56,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:56,838 INFO L87 Difference]: Start difference. First operand 4021 states and 5092 transitions. Second operand 3 states. [2020-09-25 05:30:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:57,050 INFO L93 Difference]: Finished difference Result 6634 states and 8446 transitions. [2020-09-25 05:30:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:57,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2020-09-25 05:30:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:57,077 INFO L225 Difference]: With dead ends: 6634 [2020-09-25 05:30:57,079 INFO L226 Difference]: Without dead ends: 2763 [2020-09-25 05:30:57,089 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 [2020-09-25 05:30:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2020-09-25 05:30:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2020-09-25 05:30:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2763 states. [2020-09-25 05:30:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3507 transitions. [2020-09-25 05:30:57,174 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3507 transitions. Word has length 212 [2020-09-25 05:30:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:57,175 INFO L479 AbstractCegarLoop]: Abstraction has 2763 states and 3507 transitions. [2020-09-25 05:30:57,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3507 transitions. [2020-09-25 05:30:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 05:30:57,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:57,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:57,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 05:30:57,182 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:57,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:57,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1924666477, now seen corresponding path program 1 times [2020-09-25 05:30:57,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:57,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557449384] [2020-09-25 05:30:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:57,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:57,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 05:30:57,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-09-25 05:30:57,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:57,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 05:30:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:30:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:57,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:57,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:57,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557449384] [2020-09-25 05:30:57,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:30:57,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:30:57,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19924826] [2020-09-25 05:30:57,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:30:57,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:57,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:30:57,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:30:57,988 INFO L87 Difference]: Start difference. First operand 2763 states and 3507 transitions. Second operand 5 states. [2020-09-25 05:30:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:58,435 INFO L93 Difference]: Finished difference Result 8725 states and 11141 transitions. [2020-09-25 05:30:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:30:58,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-09-25 05:30:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:58,451 INFO L225 Difference]: With dead ends: 8725 [2020-09-25 05:30:58,451 INFO L226 Difference]: Without dead ends: 6117 [2020-09-25 05:30:58,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:30:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2020-09-25 05:30:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 2977. [2020-09-25 05:30:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2977 states. [2020-09-25 05:30:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 3769 transitions. [2020-09-25 05:30:58,562 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 3769 transitions. Word has length 213 [2020-09-25 05:30:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:58,563 INFO L479 AbstractCegarLoop]: Abstraction has 2977 states and 3769 transitions. [2020-09-25 05:30:58,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:30:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 3769 transitions. [2020-09-25 05:30:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 05:30:58,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:58,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:58,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 05:30:58,569 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-25 05:30:58,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:58,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345745759] [2020-09-25 05:30:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 05:30:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 05:30:58,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:58,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 05:30:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 05:30:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:58,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:58,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:58,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:58,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:58,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:58,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:30:58,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345745759] [2020-09-25 05:30:58,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:58,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:58,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004901046] [2020-09-25 05:30:58,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:58,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:58,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:58,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:58,926 INFO L87 Difference]: Start difference. First operand 2977 states and 3769 transitions. Second operand 3 states. [2020-09-25 05:30:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:59,132 INFO L93 Difference]: Finished difference Result 7170 states and 9183 transitions. [2020-09-25 05:30:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:59,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-25 05:30:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:59,142 INFO L225 Difference]: With dead ends: 7170 [2020-09-25 05:30:59,142 INFO L226 Difference]: Without dead ends: 4348 [2020-09-25 05:30:59,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2020-09-25 05:30:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 4346. [2020-09-25 05:30:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4346 states. [2020-09-25 05:30:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 5497 transitions. [2020-09-25 05:30:59,255 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 5497 transitions. Word has length 230 [2020-09-25 05:30:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:59,256 INFO L479 AbstractCegarLoop]: Abstraction has 4346 states and 5497 transitions. [2020-09-25 05:30:59,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 5497 transitions. [2020-09-25 05:30:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 05:30:59,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:59,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:59,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 05:30:59,264 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:59,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1847120940, now seen corresponding path program 1 times [2020-09-25 05:30:59,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:59,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430984105] [2020-09-25 05:30:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:59,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 05:30:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:30:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:59,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:59,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:31:00,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430984105] [2020-09-25 05:31:00,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:00,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:31:00,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85545397] [2020-09-25 05:31:00,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:31:00,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:00,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:31:00,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:00,007 INFO L87 Difference]: Start difference. First operand 4346 states and 5497 transitions. Second operand 3 states. [2020-09-25 05:31:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:00,171 INFO L93 Difference]: Finished difference Result 7246 states and 9201 transitions. [2020-09-25 05:31:00,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:31:00,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-25 05:31:00,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:00,179 INFO L225 Difference]: With dead ends: 7246 [2020-09-25 05:31:00,179 INFO L226 Difference]: Without dead ends: 3055 [2020-09-25 05:31:00,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2020-09-25 05:31:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3055. [2020-09-25 05:31:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3055 states. [2020-09-25 05:31:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 3861 transitions. [2020-09-25 05:31:00,259 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 3861 transitions. Word has length 240 [2020-09-25 05:31:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:00,260 INFO L479 AbstractCegarLoop]: Abstraction has 3055 states and 3861 transitions. [2020-09-25 05:31:00,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:31:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 3861 transitions. [2020-09-25 05:31:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 05:31:00,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:00,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:00,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 05:31:00,266 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:00,266 INFO L82 PathProgramCache]: Analyzing trace with hash 400073983, now seen corresponding path program 1 times [2020-09-25 05:31:00,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:00,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031443626] [2020-09-25 05:31:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:00,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:00,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 05:31:00,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:00,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-09-25 05:31:00,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:00,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:31:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 05:31:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:31:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:00,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:00,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:31:00,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:31:00,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:00,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:31:00,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031443626] [2020-09-25 05:31:00,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:00,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:31:00,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768855588] [2020-09-25 05:31:00,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:31:00,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:00,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:31:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:31:00,966 INFO L87 Difference]: Start difference. First operand 3055 states and 3861 transitions. Second operand 5 states. [2020-09-25 05:31:01,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:01,578 INFO L93 Difference]: Finished difference Result 10623 states and 13693 transitions. [2020-09-25 05:31:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:31:01,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-09-25 05:31:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:01,595 INFO L225 Difference]: With dead ends: 10623 [2020-09-25 05:31:01,596 INFO L226 Difference]: Without dead ends: 7603 [2020-09-25 05:31:01,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:31:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7603 states. [2020-09-25 05:31:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7603 to 3471. [2020-09-25 05:31:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3471 states. [2020-09-25 05:31:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 4369 transitions. [2020-09-25 05:31:01,714 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 4369 transitions. Word has length 241 [2020-09-25 05:31:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:01,715 INFO L479 AbstractCegarLoop]: Abstraction has 3471 states and 4369 transitions. [2020-09-25 05:31:01,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:31:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 4369 transitions. [2020-09-25 05:31:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 05:31:01,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:01,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:01,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 05:31:01,720 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:01,720 INFO L82 PathProgramCache]: Analyzing trace with hash -255766369, now seen corresponding path program 1 times [2020-09-25 05:31:01,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:01,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66092472] [2020-09-25 05:31:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:02,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:02,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 05:31:02,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:31:02,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 05:31:02,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:02,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:02,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:31:02,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 05:31:02,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:31:02,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:02,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:02,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:02,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:31:02,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:31:02,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:02,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:31:02,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66092472] [2020-09-25 05:31:02,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:02,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:31:02,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315852520] [2020-09-25 05:31:02,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:31:02,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:31:02,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:31:02,232 INFO L87 Difference]: Start difference. First operand 3471 states and 4369 transitions. Second operand 5 states. [2020-09-25 05:31:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:02,818 INFO L93 Difference]: Finished difference Result 11169 states and 14095 transitions. [2020-09-25 05:31:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:31:02,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-09-25 05:31:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:02,835 INFO L225 Difference]: With dead ends: 11169 [2020-09-25 05:31:02,835 INFO L226 Difference]: Without dead ends: 7733 [2020-09-25 05:31:02,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:31:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7733 states. [2020-09-25 05:31:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7733 to 3741. [2020-09-25 05:31:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3741 states. [2020-09-25 05:31:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4695 transitions. [2020-09-25 05:31:02,973 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4695 transitions. Word has length 241 [2020-09-25 05:31:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:02,974 INFO L479 AbstractCegarLoop]: Abstraction has 3741 states and 4695 transitions. [2020-09-25 05:31:02,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:31:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4695 transitions. [2020-09-25 05:31:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 05:31:02,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:02,982 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:02,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 05:31:02,983 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:02,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1830826787, now seen corresponding path program 1 times [2020-09-25 05:31:02,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:02,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387080532] [2020-09-25 05:31:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 05:31:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:31:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-09-25 05:31:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:03,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 05:31:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:31:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:03,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:31:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:31:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:03,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 05:31:03,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387080532] [2020-09-25 05:31:03,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:03,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:31:03,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629806786] [2020-09-25 05:31:03,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:31:03,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:03,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:31:03,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:03,633 INFO L87 Difference]: Start difference. First operand 3741 states and 4695 transitions. Second operand 3 states. [2020-09-25 05:31:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:03,884 INFO L93 Difference]: Finished difference Result 9036 states and 11451 transitions. [2020-09-25 05:31:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:31:03,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 05:31:03,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:03,896 INFO L225 Difference]: With dead ends: 9036 [2020-09-25 05:31:03,896 INFO L226 Difference]: Without dead ends: 5450 [2020-09-25 05:31:03,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2020-09-25 05:31:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5448. [2020-09-25 05:31:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5448 states. [2020-09-25 05:31:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 6835 transitions. [2020-09-25 05:31:04,066 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 6835 transitions. Word has length 264 [2020-09-25 05:31:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:04,067 INFO L479 AbstractCegarLoop]: Abstraction has 5448 states and 6835 transitions. [2020-09-25 05:31:04,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:31:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 6835 transitions. [2020-09-25 05:31:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 05:31:04,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:04,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:04,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 05:31:04,077 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash -962704645, now seen corresponding path program 1 times [2020-09-25 05:31:04,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:04,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86740012] [2020-09-25 05:31:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:05,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:05,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 05:31:05,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:05,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-09-25 05:31:05,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:05,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-09-25 05:31:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:31:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:05,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:05,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:05,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:31:05,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:31:05,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:05,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 05:31:05,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86740012] [2020-09-25 05:31:05,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:05,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:31:05,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073141921] [2020-09-25 05:31:05,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:31:05,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:05,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:31:05,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:05,164 INFO L87 Difference]: Start difference. First operand 5448 states and 6835 transitions. Second operand 3 states. [2020-09-25 05:31:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:05,303 INFO L93 Difference]: Finished difference Result 10801 states and 13571 transitions. [2020-09-25 05:31:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:31:05,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-09-25 05:31:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:05,320 INFO L225 Difference]: With dead ends: 10801 [2020-09-25 05:31:05,320 INFO L226 Difference]: Without dead ends: 5508 [2020-09-25 05:31:05,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2020-09-25 05:31:05,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 5301. [2020-09-25 05:31:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5301 states. [2020-09-25 05:31:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 6640 transitions. [2020-09-25 05:31:05,476 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 6640 transitions. Word has length 271 [2020-09-25 05:31:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:05,476 INFO L479 AbstractCegarLoop]: Abstraction has 5301 states and 6640 transitions. [2020-09-25 05:31:05,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:31:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 6640 transitions. [2020-09-25 05:31:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 05:31:05,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:05,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:05,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 05:31:05,484 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1586602167, now seen corresponding path program 1 times [2020-09-25 05:31:05,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:05,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144717774] [2020-09-25 05:31:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:05,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:06,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:06,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 05:31:06,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-09-25 05:31:06,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:06,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:06,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:06,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 05:31:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:31:06,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:06,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:06,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:06,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:31:06,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:31:06,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:06,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 05:31:06,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144717774] [2020-09-25 05:31:06,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:06,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:31:06,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658954636] [2020-09-25 05:31:06,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:31:06,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:06,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:31:06,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:06,544 INFO L87 Difference]: Start difference. First operand 5301 states and 6640 transitions. Second operand 3 states. [2020-09-25 05:31:06,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:06,760 INFO L93 Difference]: Finished difference Result 10405 states and 13068 transitions. [2020-09-25 05:31:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:31:06,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2020-09-25 05:31:06,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:06,770 INFO L225 Difference]: With dead ends: 10405 [2020-09-25 05:31:06,771 INFO L226 Difference]: Without dead ends: 5259 [2020-09-25 05:31:06,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:06,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2020-09-25 05:31:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5257. [2020-09-25 05:31:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5257 states. [2020-09-25 05:31:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 6572 transitions. [2020-09-25 05:31:06,969 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 6572 transitions. Word has length 274 [2020-09-25 05:31:06,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:06,970 INFO L479 AbstractCegarLoop]: Abstraction has 5257 states and 6572 transitions. [2020-09-25 05:31:06,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:31:06,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 6572 transitions. [2020-09-25 05:31:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 05:31:06,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:06,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:06,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 05:31:06,977 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:06,977 INFO L82 PathProgramCache]: Analyzing trace with hash -964430198, now seen corresponding path program 1 times [2020-09-25 05:31:06,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:06,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205577314] [2020-09-25 05:31:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-25 05:31:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:31:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-09-25 05:31:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:31:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-09-25 05:31:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:31:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:07,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:31:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:31:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 05:31:07,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205577314] [2020-09-25 05:31:07,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:07,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:31:07,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002412962] [2020-09-25 05:31:07,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:31:07,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:07,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:31:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:31:07,979 INFO L87 Difference]: Start difference. First operand 5257 states and 6572 transitions. Second operand 5 states. [2020-09-25 05:31:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:08,612 INFO L93 Difference]: Finished difference Result 17897 states and 22458 transitions. [2020-09-25 05:31:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:31:08,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-09-25 05:31:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:08,630 INFO L225 Difference]: With dead ends: 17897 [2020-09-25 05:31:08,630 INFO L226 Difference]: Without dead ends: 12659 [2020-09-25 05:31:08,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:31:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12659 states. [2020-09-25 05:31:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12659 to 5777. [2020-09-25 05:31:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5777 states. [2020-09-25 05:31:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 7208 transitions. [2020-09-25 05:31:08,846 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 7208 transitions. Word has length 275 [2020-09-25 05:31:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:08,847 INFO L479 AbstractCegarLoop]: Abstraction has 5777 states and 7208 transitions. [2020-09-25 05:31:08,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:31:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 7208 transitions. [2020-09-25 05:31:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 05:31:08,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:08,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:08,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 05:31:08,854 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:08,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1325066668, now seen corresponding path program 1 times [2020-09-25 05:31:08,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:08,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491318456] [2020-09-25 05:31:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-09-25 05:31:09,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:09,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-25 05:31:09,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 05:31:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:31:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:31:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:31:09,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 05:31:09,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491318456] [2020-09-25 05:31:09,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:09,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:31:09,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074613669] [2020-09-25 05:31:09,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:31:09,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:09,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:31:09,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:09,960 INFO L87 Difference]: Start difference. First operand 5777 states and 7208 transitions. Second operand 3 states. [2020-09-25 05:31:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:10,284 INFO L93 Difference]: Finished difference Result 12439 states and 15589 transitions. [2020-09-25 05:31:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:31:10,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2020-09-25 05:31:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:10,295 INFO L225 Difference]: With dead ends: 12439 [2020-09-25 05:31:10,295 INFO L226 Difference]: Without dead ends: 6763 [2020-09-25 05:31:10,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:10,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2020-09-25 05:31:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6287. [2020-09-25 05:31:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6287 states. [2020-09-25 05:31:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 7940 transitions. [2020-09-25 05:31:10,495 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 7940 transitions. Word has length 293 [2020-09-25 05:31:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:10,496 INFO L479 AbstractCegarLoop]: Abstraction has 6287 states and 7940 transitions. [2020-09-25 05:31:10,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:31:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 7940 transitions. [2020-09-25 05:31:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-25 05:31:10,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:10,505 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:10,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-25 05:31:10,505 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash 213695092, now seen corresponding path program 2 times [2020-09-25 05:31:10,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:10,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710007752] [2020-09-25 05:31:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking...