/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-simple/deep-nested.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:35:46,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:35:46,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:35:46,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:35:46,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:35:46,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:35:46,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:35:46,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:35:46,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:35:46,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:35:46,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:35:46,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:35:46,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:35:46,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:35:46,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:35:46,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:35:46,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:35:46,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:35:46,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:35:46,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:35:46,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:35:46,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:35:46,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:35:46,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:35:46,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:35:46,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:35:46,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:35:46,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:35:46,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:35:46,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:35:46,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:35:46,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:35:46,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:35:46,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:35:46,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:35:46,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:35:46,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:35:46,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:35:46,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:35:46,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:35:46,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:35:46,530 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 [2020-10-14 05:35:46,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:35:46,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:35:46,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:35:46,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:35:46,553 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:35:46,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:35:46,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:35:46,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:35:46,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:35:46,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:35:46,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:35:46,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:35:46,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:35:46,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:35:46,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:35:46,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:35:46,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:35:46,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:35:46,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:35:46,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:35:46,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:35:46,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:35:46,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:35:46,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:35:46,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:35:46,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:35:46,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:35:46,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:35:46,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:35:46,558 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-14 05:35:46,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:35:46,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:35:46,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:35:46,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:35:46,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:35:46,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/deep-nested.c [2020-10-14 05:35:46,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c118ef16e/82139d1e38df449aa01fa7450c24e6d3/FLAG6c0e7acac [2020-10-14 05:35:47,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:35:47,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-simple/deep-nested.c [2020-10-14 05:35:47,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c118ef16e/82139d1e38df449aa01fa7450c24e6d3/FLAG6c0e7acac [2020-10-14 05:35:47,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c118ef16e/82139d1e38df449aa01fa7450c24e6d3 [2020-10-14 05:35:47,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:35:47,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:35:47,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:35:47,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:35:47,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:35:47,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:47" (1/1) ... [2020-10-14 05:35:47,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522d3de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:47, skipping insertion in model container [2020-10-14 05:35:47,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:47" (1/1) ... [2020-10-14 05:35:47,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:35:47,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:35:47,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:35:47,999 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:35:48,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:35:48,026 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:35:48,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48 WrapperNode [2020-10-14 05:35:48,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:35:48,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:35:48,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:35:48,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:35:48,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (1/1) ... [2020-10-14 05:35:48,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (1/1) ... [2020-10-14 05:35:48,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (1/1) ... [2020-10-14 05:35:48,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (1/1) ... [2020-10-14 05:35:48,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (1/1) ... [2020-10-14 05:35:48,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (1/1) ... [2020-10-14 05:35:48,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (1/1) ... [2020-10-14 05:35:48,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:35:48,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:35:48,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:35:48,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:35:48,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (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 [2020-10-14 05:35:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:35:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:35:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:35:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:35:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:35:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:35:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:35:48,404 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:35:48,404 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-14 05:35:48,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:48 BoogieIcfgContainer [2020-10-14 05:35:48,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:35:48,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:35:48,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:35:48,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:35:48,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:35:47" (1/3) ... [2020-10-14 05:35:48,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f568c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:48, skipping insertion in model container [2020-10-14 05:35:48,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:48" (2/3) ... [2020-10-14 05:35:48,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f568c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:48, skipping insertion in model container [2020-10-14 05:35:48,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:48" (3/3) ... [2020-10-14 05:35:48,416 INFO L109 eAbstractionObserver]: Analyzing ICFG deep-nested.c [2020-10-14 05:35:48,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:35:48,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:35:48,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:35:48,489 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:35:48,489 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:35:48,489 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:35:48,489 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:35:48,490 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:35:48,490 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:35:48,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:35:48,490 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:35:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-14 05:35:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:35:48,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:48,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:48,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:48,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1946324144, now seen corresponding path program 1 times [2020-10-14 05:35:48,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:48,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033662233] [2020-10-14 05:35:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:48,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:35:48,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 05:35:48,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:48,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:35:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:35:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:35:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:35:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:48,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:35:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:35:48,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033662233] [2020-10-14 05:35:48,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:35:48,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:35:48,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742853917] [2020-10-14 05:35:48,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:35:48,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:49,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:35:49,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:35:49,007 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-10-14 05:35:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:49,137 INFO L93 Difference]: Finished difference Result 55 states and 86 transitions. [2020-10-14 05:35:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:35:49,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-14 05:35:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:49,152 INFO L225 Difference]: With dead ends: 55 [2020-10-14 05:35:49,152 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 05:35:49,156 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 [2020-10-14 05:35:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 05:35:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 05:35:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 05:35:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-10-14 05:35:49,202 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 12 [2020-10-14 05:35:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:49,203 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-10-14 05:35:49,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:35:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-10-14 05:35:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:35:49,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:49,204 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:49,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:35:49,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash 641398635, now seen corresponding path program 1 times [2020-10-14 05:35:49,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:49,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542259215] [2020-10-14 05:35:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:35:49,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:35:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-14 05:35:49,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:49,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:35:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:35:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:49,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:49,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:35:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:49,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:35:49,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542259215] [2020-10-14 05:35:49,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:35:49,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:35:49,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909732531] [2020-10-14 05:35:49,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:35:49,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:49,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:35:49,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:35:49,971 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 3 states. [2020-10-14 05:35:50,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:50,052 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2020-10-14 05:35:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:35:50,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-14 05:35:50,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:50,055 INFO L225 Difference]: With dead ends: 61 [2020-10-14 05:35:50,055 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:35:50,056 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 [2020-10-14 05:35:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:35:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 30. [2020-10-14 05:35:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 05:35:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2020-10-14 05:35:50,067 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 15 [2020-10-14 05:35:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:50,067 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2020-10-14 05:35:50,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:35:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-10-14 05:35:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:35:50,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:50,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:50,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:35:50,069 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:50,069 INFO L82 PathProgramCache]: Analyzing trace with hash -484906706, now seen corresponding path program 1 times [2020-10-14 05:35:50,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:50,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336483893] [2020-10-14 05:35:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:50,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:50,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 05:35:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-14 05:35:50,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:50,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:35:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:50,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:35:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:35:50,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336483893] [2020-10-14 05:35:50,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:35:50,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:35:50,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793073761] [2020-10-14 05:35:50,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:35:50,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:50,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:35:50,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:35:50,810 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 3 states. [2020-10-14 05:35:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:50,907 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-10-14 05:35:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:35:50,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 05:35:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:50,911 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:35:50,911 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 05:35:50,913 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 [2020-10-14 05:35:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 05:35:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2020-10-14 05:35:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 05:35:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-10-14 05:35:50,932 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18 [2020-10-14 05:35:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:50,934 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-10-14 05:35:50,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:35:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-10-14 05:35:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:35:50,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:50,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:50,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:35:50,936 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:50,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1470938527, now seen corresponding path program 1 times [2020-10-14 05:35:50,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:50,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538094997] [2020-10-14 05:35:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:52,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:52,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:35:52,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 05:35:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1902 [2020-10-14 05:35:52,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:52,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:52,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:52,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:52,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:52,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:52,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:52,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:52,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:35:52,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538094997] [2020-10-14 05:35:52,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:35:52,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:35:52,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527056814] [2020-10-14 05:35:52,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:35:52,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:52,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:35:52,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:35:52,901 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 3 states. [2020-10-14 05:35:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:53,004 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-14 05:35:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:35:53,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:35:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:53,007 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:35:53,007 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 05:35:53,008 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 [2020-10-14 05:35:53,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 05:35:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-10-14 05:35:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:35:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-14 05:35:53,018 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 21 [2020-10-14 05:35:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:53,018 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-14 05:35:53,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:35:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-14 05:35:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:35:53,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:53,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:53,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:35:53,020 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:53,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash -144693188, now seen corresponding path program 1 times [2020-10-14 05:35:53,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:53,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909201364] [2020-10-14 05:35:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:57,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:57,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:35:57,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 05:35:57,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4867 [2020-10-14 05:35:57,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:57,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:35:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:57,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:57,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:57,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:57,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:57,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:57,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:35:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:35:57,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909201364] [2020-10-14 05:35:57,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:35:57,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:35:57,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384229231] [2020-10-14 05:35:57,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:35:57,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:57,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:35:57,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:35:57,972 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 3 states. [2020-10-14 05:35:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:58,045 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-10-14 05:35:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:35:58,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 05:35:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:58,048 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:35:58,048 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:35:58,054 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 [2020-10-14 05:35:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:35:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-14 05:35:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 05:35:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-10-14 05:35:58,071 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 24 [2020-10-14 05:35:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:58,072 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-10-14 05:35:58,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:35:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-10-14 05:35:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:35:58,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:58,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:58,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:35:58,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash -987169656, now seen corresponding path program 1 times [2020-10-14 05:35:58,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:58,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645216727] [2020-10-14 05:35:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:58,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:36:03,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 05:36:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:36:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:03,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:36:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:36:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:36:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:03,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:03,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:03,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:36:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:03,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:36:03,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645216727] [2020-10-14 05:36:03,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:03,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:36:03,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298685731] [2020-10-14 05:36:03,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:36:03,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:03,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:36:03,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:36:03,275 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-10-14 05:36:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:03,570 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2020-10-14 05:36:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:36:03,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-14 05:36:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:03,572 INFO L225 Difference]: With dead ends: 105 [2020-10-14 05:36:03,572 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 05:36:03,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:36:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 05:36:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2020-10-14 05:36:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 05:36:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2020-10-14 05:36:03,586 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 27 [2020-10-14 05:36:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:03,587 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2020-10-14 05:36:03,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:36:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2020-10-14 05:36:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:36:03,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:03,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:03,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:36:03,590 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:03,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:03,591 INFO L82 PathProgramCache]: Analyzing trace with hash 51330597, now seen corresponding path program 2 times [2020-10-14 05:36:03,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:03,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8497206] [2020-10-14 05:36:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:08,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:08,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 05:36:08,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 05:36:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:36:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:08,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:36:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:36:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:36:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:08,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:08,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 05:36:08,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8497206] [2020-10-14 05:36:08,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:08,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:36:08,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754876893] [2020-10-14 05:36:08,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:36:08,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:08,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:36:08,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:36:08,797 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand 5 states. [2020-10-14 05:36:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:08,920 INFO L93 Difference]: Finished difference Result 156 states and 202 transitions. [2020-10-14 05:36:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:36:08,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 05:36:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:08,923 INFO L225 Difference]: With dead ends: 156 [2020-10-14 05:36:08,923 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 05:36:08,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:36:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 05:36:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2020-10-14 05:36:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 05:36:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2020-10-14 05:36:08,962 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 39 [2020-10-14 05:36:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:08,962 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2020-10-14 05:36:08,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:36:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2020-10-14 05:36:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 05:36:08,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:08,969 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:08,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:36:08,970 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:08,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash 613853989, now seen corresponding path program 3 times [2020-10-14 05:36:08,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:08,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539911323] [2020-10-14 05:36:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:09,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:14,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:36:14,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 05:36:14,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:36:14,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:14,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:36:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:36:14,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:36:14,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:14,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:14,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:14,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:14,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:14,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:14,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 112 proven. 5 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-14 05:36:14,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539911323] [2020-10-14 05:36:14,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:14,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:36:14,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528257743] [2020-10-14 05:36:14,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:36:14,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:14,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:36:14,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:36:14,154 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand 5 states. [2020-10-14 05:36:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:14,266 INFO L93 Difference]: Finished difference Result 226 states and 282 transitions. [2020-10-14 05:36:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:36:14,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 05:36:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:14,269 INFO L225 Difference]: With dead ends: 226 [2020-10-14 05:36:14,269 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 05:36:14,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:36:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 05:36:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 124. [2020-10-14 05:36:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 05:36:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-10-14 05:36:14,300 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 63 [2020-10-14 05:36:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:14,301 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-10-14 05:36:14,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:36:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-10-14 05:36:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 05:36:14,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:14,304 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:14,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:36:14,304 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash -349625033, now seen corresponding path program 4 times [2020-10-14 05:36:14,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:14,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878995720] [2020-10-14 05:36:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:19,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:19,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:19,776 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 31 [2020-10-14 05:36:20,206 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2020-10-14 05:36:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:20,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:20,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:20,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:20,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:20,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:20,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 248 proven. 105 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 05:36:20,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878995720] [2020-10-14 05:36:20,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:20,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:36:20,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174317164] [2020-10-14 05:36:20,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:36:20,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:20,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:36:20,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:36:20,386 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 8 states. [2020-10-14 05:36:23,412 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-10-14 05:36:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:23,449 INFO L93 Difference]: Finished difference Result 417 states and 490 transitions. [2020-10-14 05:36:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:36:23,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-14 05:36:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:23,452 INFO L225 Difference]: With dead ends: 417 [2020-10-14 05:36:23,452 INFO L226 Difference]: Without dead ends: 322 [2020-10-14 05:36:23,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:36:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-14 05:36:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 208. [2020-10-14 05:36:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 05:36:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 241 transitions. [2020-10-14 05:36:23,510 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 241 transitions. Word has length 87 [2020-10-14 05:36:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:23,511 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 241 transitions. [2020-10-14 05:36:23,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:36:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 241 transitions. [2020-10-14 05:36:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 05:36:23,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:23,519 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 13, 12, 12, 6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:23,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:36:23,519 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash -243474136, now seen corresponding path program 5 times [2020-10-14 05:36:23,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:23,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546456792] [2020-10-14 05:36:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:28,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:28,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 05:36:28,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:36:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 05:36:28,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:28,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:36:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:36:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 05:36:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:28,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:28,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:28,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:28,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:28,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 871 proven. 183 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2020-10-14 05:36:28,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546456792] [2020-10-14 05:36:28,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:28,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:36:28,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259776957] [2020-10-14 05:36:28,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:36:28,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:28,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:36:28,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:36:28,839 INFO L87 Difference]: Start difference. First operand 208 states and 241 transitions. Second operand 6 states. [2020-10-14 05:36:29,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:29,071 INFO L93 Difference]: Finished difference Result 513 states and 600 transitions. [2020-10-14 05:36:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:36:29,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-10-14 05:36:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:29,075 INFO L225 Difference]: With dead ends: 513 [2020-10-14 05:36:29,075 INFO L226 Difference]: Without dead ends: 332 [2020-10-14 05:36:29,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:36:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-14 05:36:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 280. [2020-10-14 05:36:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-14 05:36:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 321 transitions. [2020-10-14 05:36:29,134 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 321 transitions. Word has length 150 [2020-10-14 05:36:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:29,135 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 321 transitions. [2020-10-14 05:36:29,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:36:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 321 transitions. [2020-10-14 05:36:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 05:36:29,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:29,138 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 19, 18, 18, 6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:29,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:36:29,139 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:29,139 INFO L82 PathProgramCache]: Analyzing trace with hash 514137132, now seen corresponding path program 6 times [2020-10-14 05:36:29,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:29,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776941668] [2020-10-14 05:36:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 05:36:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:34,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:34,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:34,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:34,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:34,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:34,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:34,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:34,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:34,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:34,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 1855 proven. 26 refuted. 0 times theorem prover too weak. 1634 trivial. 0 not checked. [2020-10-14 05:36:34,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776941668] [2020-10-14 05:36:34,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:34,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:36:34,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406858957] [2020-10-14 05:36:34,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:36:34,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:36:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:36:34,709 INFO L87 Difference]: Start difference. First operand 280 states and 321 transitions. Second operand 6 states. [2020-10-14 05:36:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:34,966 INFO L93 Difference]: Finished difference Result 672 states and 781 transitions. [2020-10-14 05:36:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:36:34,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-10-14 05:36:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:34,971 INFO L225 Difference]: With dead ends: 672 [2020-10-14 05:36:34,971 INFO L226 Difference]: Without dead ends: 408 [2020-10-14 05:36:34,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:36:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-14 05:36:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 358. [2020-10-14 05:36:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-14 05:36:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 399 transitions. [2020-10-14 05:36:35,063 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 399 transitions. Word has length 204 [2020-10-14 05:36:35,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:35,065 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 399 transitions. [2020-10-14 05:36:35,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:36:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 399 transitions. [2020-10-14 05:36:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 05:36:35,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:35,073 INFO L422 BasicCegarLoop]: trace histogram [58, 57, 57, 19, 18, 18, 6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:35,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:36:35,074 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:35,075 INFO L82 PathProgramCache]: Analyzing trace with hash -745460252, now seen corresponding path program 7 times [2020-10-14 05:36:35,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:35,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785033961] [2020-10-14 05:36:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:40,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:40,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 05:36:40,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 05:36:40,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 05:36:40,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:40,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:36:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 05:36:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:40,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:40,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:40,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:40,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:40,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:40,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6574 backedges. 4008 proven. 1114 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2020-10-14 05:36:40,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785033961] [2020-10-14 05:36:40,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:40,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:36:40,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518786722] [2020-10-14 05:36:40,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:36:40,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:40,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:36:40,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:36:40,798 INFO L87 Difference]: Start difference. First operand 358 states and 399 transitions. Second operand 9 states. [2020-10-14 05:36:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:41,582 INFO L93 Difference]: Finished difference Result 1100 states and 1226 transitions. [2020-10-14 05:36:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:36:41,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 261 [2020-10-14 05:36:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:41,589 INFO L225 Difference]: With dead ends: 1100 [2020-10-14 05:36:41,589 INFO L226 Difference]: Without dead ends: 828 [2020-10-14 05:36:41,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:36:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-14 05:36:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 514. [2020-10-14 05:36:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-14 05:36:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 571 transitions. [2020-10-14 05:36:41,678 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 571 transitions. Word has length 261 [2020-10-14 05:36:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:41,680 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 571 transitions. [2020-10-14 05:36:41,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:36:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 571 transitions. [2020-10-14 05:36:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-14 05:36:41,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:41,687 INFO L422 BasicCegarLoop]: trace histogram [85, 84, 84, 28, 27, 27, 9, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:41,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:36:41,687 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:41,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2109617920, now seen corresponding path program 8 times [2020-10-14 05:36:41,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:41,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610598397] [2020-10-14 05:36:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:46,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:46,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 05:36:46,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 05:36:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-14 05:36:46,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:46,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:36:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:36:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 05:36:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:47,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:47,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 14344 backedges. 6338 proven. 1002 refuted. 0 times theorem prover too weak. 7004 trivial. 0 not checked. [2020-10-14 05:36:47,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610598397] [2020-10-14 05:36:47,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:47,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:36:47,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046393062] [2020-10-14 05:36:47,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:36:47,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:47,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:36:47,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:36:47,462 INFO L87 Difference]: Start difference. First operand 514 states and 571 transitions. Second operand 7 states. [2020-10-14 05:36:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:47,821 INFO L93 Difference]: Finished difference Result 1255 states and 1400 transitions. [2020-10-14 05:36:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:36:47,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 378 [2020-10-14 05:36:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:47,826 INFO L225 Difference]: With dead ends: 1255 [2020-10-14 05:36:47,827 INFO L226 Difference]: Without dead ends: 866 [2020-10-14 05:36:47,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:36:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-14 05:36:47,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 744. [2020-10-14 05:36:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-14 05:36:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 825 transitions. [2020-10-14 05:36:47,951 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 825 transitions. Word has length 378 [2020-10-14 05:36:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:47,952 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 825 transitions. [2020-10-14 05:36:47,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:36:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 825 transitions. [2020-10-14 05:36:47,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-14 05:36:47,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:47,965 INFO L422 BasicCegarLoop]: trace histogram [121, 120, 120, 40, 39, 39, 13, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:47,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:36:47,966 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:47,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:47,966 INFO L82 PathProgramCache]: Analyzing trace with hash -879708362, now seen corresponding path program 9 times [2020-10-14 05:36:47,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:47,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047480430] [2020-10-14 05:36:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:49,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:53,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:53,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-14 05:36:53,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 05:36:53,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-14 05:36:53,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:53,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:36:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:36:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 529 [2020-10-14 05:36:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:53,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:53,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:53,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:53,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 29366 backedges. 0 proven. 14214 refuted. 0 times theorem prover too weak. 15152 trivial. 0 not checked. [2020-10-14 05:36:54,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047480430] [2020-10-14 05:36:54,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:54,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:36:54,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907332477] [2020-10-14 05:36:54,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:36:54,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:54,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:36:54,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:36:54,411 INFO L87 Difference]: Start difference. First operand 744 states and 825 transitions. Second operand 4 states. [2020-10-14 05:36:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:54,771 INFO L93 Difference]: Finished difference Result 1164 states and 1291 transitions. [2020-10-14 05:36:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:36:54,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 534 [2020-10-14 05:36:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:54,778 INFO L225 Difference]: With dead ends: 1164 [2020-10-14 05:36:54,778 INFO L226 Difference]: Without dead ends: 1162 [2020-10-14 05:36:54,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:36:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-10-14 05:36:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1065. [2020-10-14 05:36:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-10-14 05:36:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1181 transitions. [2020-10-14 05:36:54,907 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1181 transitions. Word has length 534 [2020-10-14 05:36:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:54,909 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1181 transitions. [2020-10-14 05:36:54,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:36:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1181 transitions. [2020-10-14 05:36:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-14 05:36:54,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:54,936 INFO L422 BasicCegarLoop]: trace histogram [193, 192, 192, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:54,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:36:54,936 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash -51428047, now seen corresponding path program 10 times [2020-10-14 05:36:54,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:54,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59164659] [2020-10-14 05:36:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:56,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:58,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:00,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 861 [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5347 [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:37:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:01,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:01,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:01,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:01,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:37:01,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:01,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 75464 backedges. 8910 proven. 24 refuted. 0 times theorem prover too weak. 66530 trivial. 0 not checked. [2020-10-14 05:37:01,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59164659] [2020-10-14 05:37:01,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:01,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:37:01,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713128542] [2020-10-14 05:37:01,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:37:01,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:01,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:37:01,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:37:01,937 INFO L87 Difference]: Start difference. First operand 1065 states and 1181 transitions. Second operand 7 states. [2020-10-14 05:37:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:02,252 INFO L93 Difference]: Finished difference Result 2509 states and 2822 transitions. [2020-10-14 05:37:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:37:02,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 855 [2020-10-14 05:37:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:02,267 INFO L225 Difference]: With dead ends: 2509 [2020-10-14 05:37:02,267 INFO L226 Difference]: Without dead ends: 1463 [2020-10-14 05:37:02,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:37:02,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-14 05:37:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1305. [2020-10-14 05:37:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-10-14 05:37:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1421 transitions. [2020-10-14 05:37:02,544 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1421 transitions. Word has length 855 [2020-10-14 05:37:02,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:02,545 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1421 transitions. [2020-10-14 05:37:02,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:37:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1421 transitions. [2020-10-14 05:37:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-14 05:37:02,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:02,571 INFO L422 BasicCegarLoop]: trace histogram [257, 256, 256, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:02,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:37:02,571 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:02,572 INFO L82 PathProgramCache]: Analyzing trace with hash -55114979, now seen corresponding path program 11 times [2020-10-14 05:37:02,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:02,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737482324] [2020-10-14 05:37:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:08,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:09,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1053 [2020-10-14 05:37:09,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:37:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5522 [2020-10-14 05:37:09,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:09,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:37:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:37:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:37:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:09,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:09,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:09,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:09,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:09,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 122536 backedges. 3710 proven. 22 refuted. 0 times theorem prover too weak. 118804 trivial. 0 not checked. [2020-10-14 05:37:10,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737482324] [2020-10-14 05:37:10,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:10,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:37:10,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213398222] [2020-10-14 05:37:10,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:37:10,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:10,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:37:10,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:37:10,312 INFO L87 Difference]: Start difference. First operand 1305 states and 1421 transitions. Second operand 8 states. [2020-10-14 05:37:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:10,816 INFO L93 Difference]: Finished difference Result 2986 states and 3299 transitions. [2020-10-14 05:37:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:37:10,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1047 [2020-10-14 05:37:10,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:10,826 INFO L225 Difference]: With dead ends: 2986 [2020-10-14 05:37:10,826 INFO L226 Difference]: Without dead ends: 1703 [2020-10-14 05:37:10,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:37:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-14 05:37:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1545. [2020-10-14 05:37:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-14 05:37:11,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1661 transitions. [2020-10-14 05:37:11,029 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1661 transitions. Word has length 1047 [2020-10-14 05:37:11,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:11,030 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 1661 transitions. [2020-10-14 05:37:11,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:37:11,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1661 transitions. [2020-10-14 05:37:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1240 [2020-10-14 05:37:11,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:11,046 INFO L422 BasicCegarLoop]: trace histogram [321, 320, 320, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:11,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:37:11,047 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:11,047 INFO L82 PathProgramCache]: Analyzing trace with hash -72846927, now seen corresponding path program 12 times [2020-10-14 05:37:11,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:11,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242752444] [2020-10-14 05:37:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:18,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:18,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1245 [2020-10-14 05:37:18,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:37:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7015 [2020-10-14 05:37:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:37:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:37:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 05:37:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:19,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:19,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:19,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:19,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:19,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 181896 backedges. 16310 proven. 47 refuted. 0 times theorem prover too weak. 165539 trivial. 0 not checked. [2020-10-14 05:37:19,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242752444] [2020-10-14 05:37:19,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:19,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:37:19,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943150161] [2020-10-14 05:37:19,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:37:19,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:37:19,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:37:19,973 INFO L87 Difference]: Start difference. First operand 1545 states and 1661 transitions. Second operand 9 states. [2020-10-14 05:37:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:20,397 INFO L93 Difference]: Finished difference Result 3463 states and 3776 transitions. [2020-10-14 05:37:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:37:20,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1239 [2020-10-14 05:37:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:20,405 INFO L225 Difference]: With dead ends: 3463 [2020-10-14 05:37:20,406 INFO L226 Difference]: Without dead ends: 1943 [2020-10-14 05:37:20,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:37:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-10-14 05:37:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1785. [2020-10-14 05:37:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1785 states. [2020-10-14 05:37:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 1901 transitions. [2020-10-14 05:37:20,600 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 1901 transitions. Word has length 1239 [2020-10-14 05:37:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:20,600 INFO L479 AbstractCegarLoop]: Abstraction has 1785 states and 1901 transitions. [2020-10-14 05:37:20,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:37:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 1901 transitions. [2020-10-14 05:37:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1432 [2020-10-14 05:37:20,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:20,620 INFO L422 BasicCegarLoop]: trace histogram [385, 384, 384, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:20,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:37:20,620 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1433640547, now seen corresponding path program 13 times [2020-10-14 05:37:20,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:20,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269555140] [2020-10-14 05:37:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:27,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:27,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1437 [2020-10-14 05:37:27,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:37:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5974 [2020-10-14 05:37:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:27,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:37:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:37:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:37:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:28,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:28,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:37:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:28,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 253544 backedges. 15388 proven. 58 refuted. 0 times theorem prover too weak. 238098 trivial. 0 not checked. [2020-10-14 05:37:28,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269555140] [2020-10-14 05:37:28,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:28,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:37:28,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473775835] [2020-10-14 05:37:28,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:37:28,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:28,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:37:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:37:28,994 INFO L87 Difference]: Start difference. First operand 1785 states and 1901 transitions. Second operand 10 states. [2020-10-14 05:37:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:29,436 INFO L93 Difference]: Finished difference Result 3940 states and 4253 transitions. [2020-10-14 05:37:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:37:29,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1431 [2020-10-14 05:37:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:29,445 INFO L225 Difference]: With dead ends: 3940 [2020-10-14 05:37:29,446 INFO L226 Difference]: Without dead ends: 2183 [2020-10-14 05:37:29,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:37:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2020-10-14 05:37:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2025. [2020-10-14 05:37:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2025 states. [2020-10-14 05:37:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2141 transitions. [2020-10-14 05:37:29,709 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2141 transitions. Word has length 1431 [2020-10-14 05:37:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:29,710 INFO L479 AbstractCegarLoop]: Abstraction has 2025 states and 2141 transitions. [2020-10-14 05:37:29,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:37:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2141 transitions. [2020-10-14 05:37:29,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1624 [2020-10-14 05:37:29,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:29,737 INFO L422 BasicCegarLoop]: trace histogram [449, 448, 448, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:29,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:37:29,737 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:29,738 INFO L82 PathProgramCache]: Analyzing trace with hash 565247537, now seen corresponding path program 14 times [2020-10-14 05:37:29,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:29,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573564826] [2020-10-14 05:37:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:39,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:39,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1629 [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8003 [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 05:37:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:39,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:39,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:39,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:39,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:39,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:39,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:39,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:39,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 337480 backedges. 20360 proven. 232 refuted. 0 times theorem prover too weak. 316888 trivial. 0 not checked. [2020-10-14 05:37:40,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573564826] [2020-10-14 05:37:40,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:40,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:37:40,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996234965] [2020-10-14 05:37:40,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:37:40,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:40,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:37:40,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:37:40,699 INFO L87 Difference]: Start difference. First operand 2025 states and 2141 transitions. Second operand 11 states. [2020-10-14 05:37:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:41,393 INFO L93 Difference]: Finished difference Result 4417 states and 4730 transitions. [2020-10-14 05:37:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:37:41,395 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1623 [2020-10-14 05:37:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:41,403 INFO L225 Difference]: With dead ends: 4417 [2020-10-14 05:37:41,403 INFO L226 Difference]: Without dead ends: 2423 [2020-10-14 05:37:41,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:37:41,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2020-10-14 05:37:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2265. [2020-10-14 05:37:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2265 states. [2020-10-14 05:37:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 2381 transitions. [2020-10-14 05:37:41,720 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 2381 transitions. Word has length 1623 [2020-10-14 05:37:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:41,721 INFO L479 AbstractCegarLoop]: Abstraction has 2265 states and 2381 transitions. [2020-10-14 05:37:41,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:37:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 2381 transitions. [2020-10-14 05:37:41,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1816 [2020-10-14 05:37:41,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:41,767 INFO L422 BasicCegarLoop]: trace histogram [513, 512, 512, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:41,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:37:41,767 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:41,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1378033635, now seen corresponding path program 15 times [2020-10-14 05:37:41,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:41,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479356065] [2020-10-14 05:37:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:48,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1821 [2020-10-14 05:37:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 05:37:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:48,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:37:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:37:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:37:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:49,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:49,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:49,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:49,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:49,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 433704 backedges. 13290 proven. 92 refuted. 0 times theorem prover too weak. 420322 trivial. 0 not checked. [2020-10-14 05:37:50,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479356065] [2020-10-14 05:37:50,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:50,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:37:50,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850883543] [2020-10-14 05:37:50,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:37:50,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:50,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:37:50,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:37:50,315 INFO L87 Difference]: Start difference. First operand 2265 states and 2381 transitions. Second operand 12 states. [2020-10-14 05:37:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:51,041 INFO L93 Difference]: Finished difference Result 4894 states and 5207 transitions. [2020-10-14 05:37:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:37:51,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1815 [2020-10-14 05:37:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:51,049 INFO L225 Difference]: With dead ends: 4894 [2020-10-14 05:37:51,050 INFO L226 Difference]: Without dead ends: 2663 [2020-10-14 05:37:51,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:37:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2020-10-14 05:37:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2505. [2020-10-14 05:37:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2505 states. [2020-10-14 05:37:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 2621 transitions. [2020-10-14 05:37:51,297 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 2621 transitions. Word has length 1815 [2020-10-14 05:37:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:51,298 INFO L479 AbstractCegarLoop]: Abstraction has 2505 states and 2621 transitions. [2020-10-14 05:37:51,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:37:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 2621 transitions. [2020-10-14 05:37:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2008 [2020-10-14 05:37:51,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:51,333 INFO L422 BasicCegarLoop]: trace histogram [577, 576, 576, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:51,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:37:51,333 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2034701647, now seen corresponding path program 16 times [2020-10-14 05:37:51,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:51,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938220590] [2020-10-14 05:37:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:55,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:00,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:00,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2013 [2020-10-14 05:38:00,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6580 [2020-10-14 05:38:00,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:00,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:38:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:38:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:00,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:00,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:00,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:00,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:00,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:38:00,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:00,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 542216 backedges. 16630 proven. 117 refuted. 0 times theorem prover too weak. 525469 trivial. 0 not checked. [2020-10-14 05:38:02,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938220590] [2020-10-14 05:38:02,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:02,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:38:02,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354460665] [2020-10-14 05:38:02,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:38:02,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:02,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:38:02,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:38:02,185 INFO L87 Difference]: Start difference. First operand 2505 states and 2621 transitions. Second operand 13 states. [2020-10-14 05:38:03,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:03,123 INFO L93 Difference]: Finished difference Result 5371 states and 5684 transitions. [2020-10-14 05:38:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:38:03,125 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2007 [2020-10-14 05:38:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:03,134 INFO L225 Difference]: With dead ends: 5371 [2020-10-14 05:38:03,134 INFO L226 Difference]: Without dead ends: 2903 [2020-10-14 05:38:03,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:38:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-10-14 05:38:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2745. [2020-10-14 05:38:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2020-10-14 05:38:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 2861 transitions. [2020-10-14 05:38:03,356 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 2861 transitions. Word has length 2007 [2020-10-14 05:38:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:03,356 INFO L479 AbstractCegarLoop]: Abstraction has 2745 states and 2861 transitions. [2020-10-14 05:38:03,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:38:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 2861 transitions. [2020-10-14 05:38:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2200 [2020-10-14 05:38:03,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:03,397 INFO L422 BasicCegarLoop]: trace histogram [641, 640, 640, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:03,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:38:03,398 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1506247011, now seen corresponding path program 17 times [2020-10-14 05:38:03,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:03,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300462135] [2020-10-14 05:38:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:13,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2205 [2020-10-14 05:38:13,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7612 [2020-10-14 05:38:13,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:13,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:38:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:38:13,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:14,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:14,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:38:14,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:14,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 663016 backedges. 20348 proven. 145 refuted. 0 times theorem prover too weak. 642523 trivial. 0 not checked. [2020-10-14 05:38:16,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300462135] [2020-10-14 05:38:16,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:16,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:38:16,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982886046] [2020-10-14 05:38:16,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:38:16,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:16,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:38:16,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:38:16,147 INFO L87 Difference]: Start difference. First operand 2745 states and 2861 transitions. Second operand 14 states. [2020-10-14 05:38:16,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:16,810 INFO L93 Difference]: Finished difference Result 5848 states and 6161 transitions. [2020-10-14 05:38:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:38:16,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2199 [2020-10-14 05:38:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:16,820 INFO L225 Difference]: With dead ends: 5848 [2020-10-14 05:38:16,820 INFO L226 Difference]: Without dead ends: 3143 [2020-10-14 05:38:16,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:38:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-14 05:38:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2985. [2020-10-14 05:38:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2985 states. [2020-10-14 05:38:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 3101 transitions. [2020-10-14 05:38:17,064 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 3101 transitions. Word has length 2199 [2020-10-14 05:38:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:17,064 INFO L479 AbstractCegarLoop]: Abstraction has 2985 states and 3101 transitions. [2020-10-14 05:38:17,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:38:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 3101 transitions. [2020-10-14 05:38:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2392 [2020-10-14 05:38:17,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:17,111 INFO L422 BasicCegarLoop]: trace histogram [705, 704, 704, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:17,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:38:17,112 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1401931983, now seen corresponding path program 18 times [2020-10-14 05:38:17,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:17,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773833493] [2020-10-14 05:38:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:28,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:28,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2397 [2020-10-14 05:38:28,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8458 [2020-10-14 05:38:28,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:28,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:38:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 05:38:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 796104 backedges. 24444 proven. 176 refuted. 0 times theorem prover too weak. 771484 trivial. 0 not checked. [2020-10-14 05:38:31,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773833493] [2020-10-14 05:38:31,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:31,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:38:31,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487483443] [2020-10-14 05:38:31,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:38:31,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:31,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:38:31,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:38:31,254 INFO L87 Difference]: Start difference. First operand 2985 states and 3101 transitions. Second operand 15 states. [2020-10-14 05:38:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:32,422 INFO L93 Difference]: Finished difference Result 6325 states and 6638 transitions. [2020-10-14 05:38:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:38:32,423 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 2391 [2020-10-14 05:38:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:32,432 INFO L225 Difference]: With dead ends: 6325 [2020-10-14 05:38:32,432 INFO L226 Difference]: Without dead ends: 3383 [2020-10-14 05:38:32,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:38:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2020-10-14 05:38:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3225. [2020-10-14 05:38:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3225 states. [2020-10-14 05:38:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 3341 transitions. [2020-10-14 05:38:32,692 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 3341 transitions. Word has length 2391 [2020-10-14 05:38:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:32,692 INFO L479 AbstractCegarLoop]: Abstraction has 3225 states and 3341 transitions. [2020-10-14 05:38:32,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:38:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 3341 transitions. [2020-10-14 05:38:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2584 [2020-10-14 05:38:32,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:32,730 INFO L422 BasicCegarLoop]: trace histogram [769, 768, 768, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:32,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:38:32,731 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:32,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1764703517, now seen corresponding path program 19 times [2020-10-14 05:38:32,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:32,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096937599] [2020-10-14 05:38:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:43,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:43,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2589 [2020-10-14 05:38:43,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8384 [2020-10-14 05:38:43,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:43,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:38:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:38:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:44,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:44,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:44,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 941480 backedges. 28918 proven. 210 refuted. 0 times theorem prover too weak. 912352 trivial. 0 not checked. [2020-10-14 05:38:47,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096937599] [2020-10-14 05:38:47,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:47,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:38:47,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043573415] [2020-10-14 05:38:47,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:38:47,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:47,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:38:47,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:38:47,840 INFO L87 Difference]: Start difference. First operand 3225 states and 3341 transitions. Second operand 16 states. [2020-10-14 05:38:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:48,752 INFO L93 Difference]: Finished difference Result 6802 states and 7115 transitions. [2020-10-14 05:38:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:38:48,753 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 2583 [2020-10-14 05:38:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:48,765 INFO L225 Difference]: With dead ends: 6802 [2020-10-14 05:38:48,765 INFO L226 Difference]: Without dead ends: 3623 [2020-10-14 05:38:48,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:38:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2020-10-14 05:38:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3465. [2020-10-14 05:38:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3465 states. [2020-10-14 05:38:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 3581 transitions. [2020-10-14 05:38:49,044 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 3581 transitions. Word has length 2583 [2020-10-14 05:38:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:49,044 INFO L479 AbstractCegarLoop]: Abstraction has 3465 states and 3581 transitions. [2020-10-14 05:38:49,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:38:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 3581 transitions. [2020-10-14 05:38:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2776 [2020-10-14 05:38:49,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:49,090 INFO L422 BasicCegarLoop]: trace histogram [833, 832, 832, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:49,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:38:49,090 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2122769329, now seen corresponding path program 20 times [2020-10-14 05:38:49,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:49,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246357619] [2020-10-14 05:38:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:03,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:03,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2781 [2020-10-14 05:39:03,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:03,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10795 [2020-10-14 05:39:03,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:03,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:39:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:39:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:39:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:39:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:39:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:04,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:04,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:39:04,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:39:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:04,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:39:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:39:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:39:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:39:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1099144 backedges. 33770 proven. 247 refuted. 0 times theorem prover too weak. 1065127 trivial. 0 not checked. [2020-10-14 05:39:07,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246357619] [2020-10-14 05:39:07,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:39:07,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:39:07,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163016222] [2020-10-14 05:39:07,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:39:07,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:39:07,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:39:07,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:39:07,346 INFO L87 Difference]: Start difference. First operand 3465 states and 3581 transitions. Second operand 17 states. [2020-10-14 05:39:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:39:08,836 INFO L93 Difference]: Finished difference Result 7279 states and 7592 transitions. [2020-10-14 05:39:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:39:08,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 2775 [2020-10-14 05:39:08,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:39:08,849 INFO L225 Difference]: With dead ends: 7279 [2020-10-14 05:39:08,849 INFO L226 Difference]: Without dead ends: 3863 [2020-10-14 05:39:08,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:39:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2020-10-14 05:39:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3705. [2020-10-14 05:39:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3705 states. [2020-10-14 05:39:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 3821 transitions. [2020-10-14 05:39:09,140 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 3821 transitions. Word has length 2775 [2020-10-14 05:39:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:39:09,140 INFO L479 AbstractCegarLoop]: Abstraction has 3705 states and 3821 transitions. [2020-10-14 05:39:09,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:39:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 3821 transitions. [2020-10-14 05:39:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2968 [2020-10-14 05:39:09,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:39:09,192 INFO L422 BasicCegarLoop]: trace histogram [897, 896, 896, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:39:09,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:39:09,192 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:39:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:39:09,193 INFO L82 PathProgramCache]: Analyzing trace with hash 38869917, now seen corresponding path program 21 times [2020-10-14 05:39:09,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:39:09,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471445738] [2020-10-14 05:39:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:39:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:24,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:24,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2973 [2020-10-14 05:39:24,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11451 [2020-10-14 05:39:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:39:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:39:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:39:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:39:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:39:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:27,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:27,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:39:27,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:39:27,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:27,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:39:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:39:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:39:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:39:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1269096 backedges. 39000 proven. 287 refuted. 0 times theorem prover too weak. 1229809 trivial. 0 not checked. [2020-10-14 05:39:31,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471445738] [2020-10-14 05:39:31,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:39:31,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:39:31,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344896739] [2020-10-14 05:39:31,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:39:31,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:39:31,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:39:31,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:39:31,400 INFO L87 Difference]: Start difference. First operand 3705 states and 3821 transitions. Second operand 18 states. [2020-10-14 05:39:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:39:32,578 INFO L93 Difference]: Finished difference Result 7756 states and 8069 transitions. [2020-10-14 05:39:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:39:32,579 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 2967 [2020-10-14 05:39:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:39:32,587 INFO L225 Difference]: With dead ends: 7756 [2020-10-14 05:39:32,587 INFO L226 Difference]: Without dead ends: 4103 [2020-10-14 05:39:32,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:39:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-10-14 05:39:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 3945. [2020-10-14 05:39:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3945 states. [2020-10-14 05:39:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3945 states to 3945 states and 4061 transitions. [2020-10-14 05:39:32,866 INFO L78 Accepts]: Start accepts. Automaton has 3945 states and 4061 transitions. Word has length 2967 [2020-10-14 05:39:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:39:32,867 INFO L479 AbstractCegarLoop]: Abstraction has 3945 states and 4061 transitions. [2020-10-14 05:39:32,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:39:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3945 states and 4061 transitions. [2020-10-14 05:39:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3160 [2020-10-14 05:39:32,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:39:32,920 INFO L422 BasicCegarLoop]: trace histogram [961, 960, 960, 64, 63, 63, 21, 20, 20, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:39:32,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:39:32,921 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:39:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:39:32,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1387065393, now seen corresponding path program 22 times [2020-10-14 05:39:32,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:39:32,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839687598] [2020-10-14 05:39:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:39:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking...