/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=NARROWEST --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/reducercommutativity/max40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:08:43,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:08:43,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:08:43,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:08:43,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:08:43,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:08:43,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:08:43,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:08:43,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:08:43,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:08:43,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:08:43,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:08:43,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:08:43,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:08:43,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:08:43,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:08:43,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:08:43,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:08:43,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:08:43,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:08:43,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:08:43,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:08:43,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:08:43,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:08:43,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:08:43,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:08:43,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:08:43,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:08:43,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:08:43,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:08:43,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:08:43,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:08:43,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:08:43,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:08:43,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:08:43,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:08:43,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:08:43,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:08:43,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:08:43,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:08:43,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:08:43,607 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 [2020-10-13 13:08:43,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:08:43,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:08:43,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:08:43,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:08:43,632 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:08:43,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:08:43,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:08:43,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:08:43,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:08:43,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:08:43,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:08:43,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:08:43,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:08:43,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:08:43,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:08:43,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:08:43,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:08:43,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:08:43,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:08:43,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:08:43,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:08:43,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:08:43,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:08:43,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:08:43,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:08:43,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:08:43,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:08:43,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:08:43,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:08:43,637 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:08:43,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:08:43,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:08:43,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:08:43,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:08:43,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:08:43,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-13 13:08:44,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceb1cc8d5/536476985b9547db9b158c745f6dd98c/FLAGb7075187c [2020-10-13 13:08:44,528 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:08:44,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-13 13:08:44,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceb1cc8d5/536476985b9547db9b158c745f6dd98c/FLAGb7075187c [2020-10-13 13:08:44,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceb1cc8d5/536476985b9547db9b158c745f6dd98c [2020-10-13 13:08:44,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:08:44,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:08:44,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:08:44,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:08:44,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:08:44,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:08:44" (1/1) ... [2020-10-13 13:08:44,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea0c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:44, skipping insertion in model container [2020-10-13 13:08:44,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:08:44" (1/1) ... [2020-10-13 13:08:44,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:08:45,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:08:45,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:08:45,266 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:08:45,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:08:45,334 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:08:45,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45 WrapperNode [2020-10-13 13:08:45,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:08:45,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:08:45,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:08:45,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:08:45,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (1/1) ... [2020-10-13 13:08:45,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (1/1) ... [2020-10-13 13:08:45,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (1/1) ... [2020-10-13 13:08:45,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (1/1) ... [2020-10-13 13:08:45,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (1/1) ... [2020-10-13 13:08:45,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (1/1) ... [2020-10-13 13:08:45,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (1/1) ... [2020-10-13 13:08:45,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:08:45,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:08:45,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:08:45,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:08:45,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (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 [2020-10-13 13:08:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:08:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:08:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-13 13:08:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:08:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:08:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 13:08:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-13 13:08:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 13:08:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:08:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 13:08:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 13:08:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 13:08:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:08:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:08:45,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:08:45,950 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 13:08:45,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:08:45 BoogieIcfgContainer [2020-10-13 13:08:45,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:08:45,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:08:45,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:08:45,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:08:45,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:08:44" (1/3) ... [2020-10-13 13:08:45,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d3f58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:08:45, skipping insertion in model container [2020-10-13 13:08:45,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:08:45" (2/3) ... [2020-10-13 13:08:45,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d3f58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:08:45, skipping insertion in model container [2020-10-13 13:08:45,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:08:45" (3/3) ... [2020-10-13 13:08:45,975 INFO L109 eAbstractionObserver]: Analyzing ICFG max40-1.i [2020-10-13 13:08:45,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:08:46,004 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:08:46,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:08:46,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:08:46,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:08:46,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:08:46,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:08:46,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:08:46,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:08:46,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:08:46,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:08:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-13 13:08:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:08:46,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:46,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:46,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:46,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-13 13:08:46,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:46,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984276866] [2020-10-13 13:08:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:47,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:08:47,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:08:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1237 [2020-10-13 13:08:47,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:08:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:08:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:47,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:47,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:08:47,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:08:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:08:47,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:08:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:08:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:47,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:47,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:47,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:47,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:08:47,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:08:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:47,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:08:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:47,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:47,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:08:47,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:08:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 13:08:47,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984276866] [2020-10-13 13:08:47,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:47,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-13 13:08:47,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060184135] [2020-10-13 13:08:47,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 13:08:47,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:47,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 13:08:47,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:08:47,620 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-13 13:08:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:47,717 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2020-10-13 13:08:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 13:08:47,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 13:08:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:47,728 INFO L225 Difference]: With dead ends: 58 [2020-10-13 13:08:47,728 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 13:08:47,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:08:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 13:08:47,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-13 13:08:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 13:08:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-13 13:08:47,776 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2020-10-13 13:08:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:47,777 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-13 13:08:47,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 13:08:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-13 13:08:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:08:47,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:47,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:47,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:08:47,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:47,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965707, now seen corresponding path program 1 times [2020-10-13 13:08:47,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:47,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754708003] [2020-10-13 13:08:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:08:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:08:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-13 13:08:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:08:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:08:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:49,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:08:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:08:49,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:49,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:08:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:49,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:49,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:08:49,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:08:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:08:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:08:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 13:08:49,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754708003] [2020-10-13 13:08:49,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:49,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 13:08:49,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949622754] [2020-10-13 13:08:49,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:08:49,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:49,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:08:49,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:49,065 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-13 13:08:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:49,157 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-10-13 13:08:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:08:49,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 13:08:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:49,159 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:08:49,159 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:08:49,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:08:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:08:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-13 13:08:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 13:08:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-13 13:08:49,170 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2020-10-13 13:08:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:49,170 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-13 13:08:49,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:08:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-13 13:08:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 13:08:49,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:49,172 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:49,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:08:49,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash -2021843290, now seen corresponding path program 1 times [2020-10-13 13:08:49,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:49,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204873087] [2020-10-13 13:08:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:52,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 13:08:52,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3188 [2020-10-13 13:08:52,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:52,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:52,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:08:52,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:08:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:08:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 13:08:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:52,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:52,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:08:52,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:52,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:52,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:08:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:52,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:52,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:52,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:08:52,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 13:08:52,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204873087] [2020-10-13 13:08:52,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:08:52,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:08:52,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913417600] [2020-10-13 13:08:52,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:08:52,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:08:52,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:52,512 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-13 13:08:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:52,589 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-13 13:08:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:08:52,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 13:08:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:52,591 INFO L225 Difference]: With dead ends: 52 [2020-10-13 13:08:52,591 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 13:08:52,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:52,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 13:08:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-13 13:08:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 13:08:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-13 13:08:52,599 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 44 [2020-10-13 13:08:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:52,599 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-13 13:08:52,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:08:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-13 13:08:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 13:08:52,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:52,601 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:52,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:08:52,602 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:52,602 INFO L82 PathProgramCache]: Analyzing trace with hash 727331048, now seen corresponding path program 1 times [2020-10-13 13:08:52,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:52,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688349149] [2020-10-13 13:08:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 13:08:57,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4435 [2020-10-13 13:08:57,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:08:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:57,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:57,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:57,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:08:57,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:08:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:08:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:57,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:08:57,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:08:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:57,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:08:57,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:08:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:57,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:08:57,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 13:08:57,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688349149] [2020-10-13 13:08:57,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:08:57,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:08:57,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893596891] [2020-10-13 13:08:57,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:08:57,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:08:57,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:57,253 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-13 13:08:57,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:57,353 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-10-13 13:08:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:08:57,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 13:08:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:57,355 INFO L225 Difference]: With dead ends: 47 [2020-10-13 13:08:57,355 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:08:57,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:08:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 13:08:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 13:08:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-13 13:08:57,367 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2020-10-13 13:08:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:57,370 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-13 13:08:57,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:08:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-13 13:08:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 13:08:57,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:57,373 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:57,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:08:57,374 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:57,374 INFO L82 PathProgramCache]: Analyzing trace with hash -270429754, now seen corresponding path program 1 times [2020-10-13 13:08:57,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:57,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869968449] [2020-10-13 13:08:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 13:09:02,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:09:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:09:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:09:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:02,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:02,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:09:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:09:02,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:09:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:02,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:09:02,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:09:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:02,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:02,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:09:02,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 13:09:02,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869968449] [2020-10-13 13:09:02,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:02,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:09:02,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235317785] [2020-10-13 13:09:02,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:09:02,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:02,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:09:02,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:02,514 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-13 13:09:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:02,610 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-13 13:09:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:09:02,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 13:09:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:02,612 INFO L225 Difference]: With dead ends: 56 [2020-10-13 13:09:02,612 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 13:09:02,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 13:09:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 13:09:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:09:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-13 13:09:02,624 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 48 [2020-10-13 13:09:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:02,625 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-13 13:09:02,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:09:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-13 13:09:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 13:09:02,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:02,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:02,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:09:02,630 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1585951496, now seen corresponding path program 2 times [2020-10-13 13:09:02,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:02,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114235204] [2020-10-13 13:09:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 13:09:07,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:07,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:09:07,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:09:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:09:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:09:07,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:07,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:07,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:07,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:09:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:07,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:09:07,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:09:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:07,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:07,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:09:07,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:07,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:09:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:09:07,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:07,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 13:09:07,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114235204] [2020-10-13 13:09:07,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:07,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:09:07,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988049274] [2020-10-13 13:09:07,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:09:07,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:07,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:09:07,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:07,778 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2020-10-13 13:09:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:07,866 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-10-13 13:09:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:09:07,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 13:09:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:07,869 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:09:07,869 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:09:07,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:09:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 13:09:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 13:09:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-13 13:09:07,881 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 50 [2020-10-13 13:09:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:07,881 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-13 13:09:07,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:09:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-13 13:09:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 13:09:07,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:07,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:07,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:09:07,885 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash 230099942, now seen corresponding path program 3 times [2020-10-13 13:09:07,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:07,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139364170] [2020-10-13 13:09:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 13:09:12,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:09:12,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:09:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:09:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:09:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:12,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:12,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:09:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:09:12,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:09:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:12,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:09:12,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:12,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:09:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:13,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:13,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:09:13,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 13:09:13,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139364170] [2020-10-13 13:09:13,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:13,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:09:13,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621252954] [2020-10-13 13:09:13,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:09:13,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:13,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:09:13,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:09:13,023 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 6 states. [2020-10-13 13:09:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:13,136 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-13 13:09:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:09:13,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 13:09:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:13,138 INFO L225 Difference]: With dead ends: 53 [2020-10-13 13:09:13,138 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 13:09:13,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:09:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 13:09:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 13:09:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 13:09:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-13 13:09:13,150 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 52 [2020-10-13 13:09:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:13,151 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-13 13:09:13,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:09:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-13 13:09:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 13:09:13,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:13,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:13,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:09:13,154 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:13,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1368152764, now seen corresponding path program 4 times [2020-10-13 13:09:13,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:13,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827431145] [2020-10-13 13:09:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 13:09:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:09:18,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:09:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:09:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:09:18,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:18,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:09:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:18,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:09:18,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:09:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:09:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:09:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:09:18,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:09:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:09:18,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 13:09:18,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827431145] [2020-10-13 13:09:18,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:18,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:09:18,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948358215] [2020-10-13 13:09:18,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:09:18,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:18,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:09:18,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:18,255 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2020-10-13 13:09:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:18,348 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-13 13:09:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:09:18,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 13:09:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:18,349 INFO L225 Difference]: With dead ends: 69 [2020-10-13 13:09:18,350 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 13:09:18,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:09:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 13:09:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-13 13:09:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 13:09:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-13 13:09:18,356 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 54 [2020-10-13 13:09:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:18,357 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-13 13:09:18,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:09:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-13 13:09:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 13:09:18,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:18,358 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:18,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:09:18,358 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:18,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:18,359 INFO L82 PathProgramCache]: Analyzing trace with hash 142498655, now seen corresponding path program 5 times [2020-10-13 13:09:18,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:18,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720004915] [2020-10-13 13:09:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:23,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 13:09:23,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:09:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:09:23,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:09:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:09:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:23,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:09:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:09:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:09:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:23,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:23,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:09:23,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:09:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:23,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:23,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:23,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:09:23,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 13:09:23,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720004915] [2020-10-13 13:09:23,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:23,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:09:23,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584457814] [2020-10-13 13:09:23,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:09:23,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:23,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:09:23,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:09:23,537 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 6 states. [2020-10-13 13:09:23,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:23,627 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-10-13 13:09:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:09:23,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 13:09:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:23,629 INFO L225 Difference]: With dead ends: 74 [2020-10-13 13:09:23,629 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 13:09:23,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:09:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 13:09:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 13:09:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 13:09:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-13 13:09:23,642 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 66 [2020-10-13 13:09:23,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:23,642 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-13 13:09:23,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:09:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-13 13:09:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 13:09:23,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:23,646 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:23,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:09:23,647 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1445687329, now seen corresponding path program 6 times [2020-10-13 13:09:23,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:23,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217060087] [2020-10-13 13:09:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:28,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 13:09:28,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:09:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:09:28,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:09:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:09:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:09:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:28,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:28,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:28,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:28,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:09:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:28,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:28,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:09:28,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:09:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:28,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:28,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:28,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:09:28,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:09:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:28,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:09:28,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 13:09:28,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217060087] [2020-10-13 13:09:28,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:28,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:09:28,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028756331] [2020-10-13 13:09:28,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:09:28,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:09:28,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:09:28,795 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 7 states. [2020-10-13 13:09:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:28,892 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-13 13:09:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:09:28,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 13:09:28,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:28,893 INFO L225 Difference]: With dead ends: 65 [2020-10-13 13:09:28,894 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 13:09:28,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:09:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 13:09:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 13:09:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:09:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-13 13:09:28,900 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 68 [2020-10-13 13:09:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:28,900 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-13 13:09:28,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:09:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-13 13:09:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 13:09:28,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:28,901 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:28,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:09:28,902 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:28,902 INFO L82 PathProgramCache]: Analyzing trace with hash -735147393, now seen corresponding path program 7 times [2020-10-13 13:09:28,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:28,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277519843] [2020-10-13 13:09:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:32,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:33,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:09:33,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:09:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:09:33,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:09:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:09:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:33,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:33,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:33,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:09:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:33,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:33,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:09:33,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:33,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:09:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:34,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:34,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:09:34,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:34,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:09:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:34,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:34,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:09:34,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 13:09:34,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277519843] [2020-10-13 13:09:34,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:34,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:09:34,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757401543] [2020-10-13 13:09:34,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:09:34,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:09:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:09:34,026 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-10-13 13:09:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:34,143 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2020-10-13 13:09:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:09:34,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 13:09:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:34,145 INFO L225 Difference]: With dead ends: 80 [2020-10-13 13:09:34,145 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 13:09:34,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:09:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 13:09:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 13:09:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 13:09:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-13 13:09:34,152 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 70 [2020-10-13 13:09:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:34,153 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-13 13:09:34,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:09:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-13 13:09:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 13:09:34,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:34,154 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:34,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:09:34,154 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:34,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:34,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1478529471, now seen corresponding path program 8 times [2020-10-13 13:09:34,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:34,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354919815] [2020-10-13 13:09:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:39,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 13:09:39,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:09:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:39,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:39,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:09:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:09:39,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:09:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:39,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:09:39,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:39,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:09:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:09:39,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 13:09:39,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354919815] [2020-10-13 13:09:39,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:39,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:09:39,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942387275] [2020-10-13 13:09:39,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:09:39,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:39,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:09:39,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:09:39,282 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 8 states. [2020-10-13 13:09:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:39,388 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-10-13 13:09:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:09:39,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 13:09:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:39,389 INFO L225 Difference]: With dead ends: 69 [2020-10-13 13:09:39,389 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 13:09:39,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:09:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 13:09:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 13:09:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 13:09:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-13 13:09:39,396 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 72 [2020-10-13 13:09:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:39,397 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-13 13:09:39,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:09:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-13 13:09:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 13:09:39,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:39,398 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:39,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:09:39,398 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:39,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1998880609, now seen corresponding path program 9 times [2020-10-13 13:09:39,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:39,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507447475] [2020-10-13 13:09:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:09:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:44,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:44,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:09:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:44,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:44,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:09:44,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:09:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:44,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:44,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:09:44,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:09:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:09:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 13:09:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:09:44,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:09:44,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:09:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:44,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 13:09:44,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507447475] [2020-10-13 13:09:44,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:44,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:09:44,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107201410] [2020-10-13 13:09:44,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:09:44,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:44,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:09:44,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:09:44,524 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2020-10-13 13:09:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:44,640 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2020-10-13 13:09:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:09:44,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-13 13:09:44,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:44,641 INFO L225 Difference]: With dead ends: 89 [2020-10-13 13:09:44,641 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 13:09:44,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:09:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 13:09:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-13 13:09:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 13:09:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-13 13:09:44,648 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 74 [2020-10-13 13:09:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:44,648 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-13 13:09:44,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:09:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-13 13:09:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:09:44,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:44,650 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:44,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:09:44,650 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash 518263354, now seen corresponding path program 10 times [2020-10-13 13:09:44,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:44,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228632363] [2020-10-13 13:09:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:09:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:49,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:49,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:09:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:09:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:09:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:09:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 13:09:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 13:09:49,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228632363] [2020-10-13 13:09:49,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:49,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:09:49,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691420661] [2020-10-13 13:09:49,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:09:49,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:49,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:09:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:09:49,801 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 8 states. [2020-10-13 13:09:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:49,913 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-10-13 13:09:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:09:49,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-13 13:09:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:49,914 INFO L225 Difference]: With dead ends: 94 [2020-10-13 13:09:49,914 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 13:09:49,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:09:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 13:09:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 13:09:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 13:09:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-13 13:09:49,921 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 86 [2020-10-13 13:09:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:49,921 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-13 13:09:49,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:09:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-13 13:09:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:09:49,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:49,922 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:49,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:09:49,923 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1395208700, now seen corresponding path program 11 times [2020-10-13 13:09:49,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:49,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328239537] [2020-10-13 13:09:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 13:09:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:09:54,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:09:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 13:09:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:09:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:55,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:55,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:55,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:09:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:55,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:09:55,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:09:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:55,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:09:55,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:09:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:55,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:09:55,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 13:09:55,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328239537] [2020-10-13 13:09:55,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:55,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:09:55,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91112545] [2020-10-13 13:09:55,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:09:55,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:55,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:09:55,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:09:55,156 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 9 states. [2020-10-13 13:09:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:55,318 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-10-13 13:09:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:09:55,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:09:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:55,320 INFO L225 Difference]: With dead ends: 81 [2020-10-13 13:09:55,320 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 13:09:55,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:09:55,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 13:09:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 13:09:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 13:09:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-13 13:09:55,336 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 88 [2020-10-13 13:09:55,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:55,340 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-13 13:09:55,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:09:55,341 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-13 13:09:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:09:55,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:55,342 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:55,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:09:55,342 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:55,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:55,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1642461862, now seen corresponding path program 12 times [2020-10-13 13:09:55,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:55,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344739972] [2020-10-13 13:09:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:10:00,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:10:00,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:10:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:10:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:00,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:00,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:00,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:00,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:00,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:00,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:10:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:10:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:00,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:00,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:10:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:10:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-13 13:10:00,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344739972] [2020-10-13 13:10:00,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:00,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:10:00,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980732336] [2020-10-13 13:10:00,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:10:00,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:00,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:10:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:00,579 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 9 states. [2020-10-13 13:10:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:00,676 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-10-13 13:10:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:10:00,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:10:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:00,678 INFO L225 Difference]: With dead ends: 100 [2020-10-13 13:10:00,678 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 13:10:00,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 13:10:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 13:10:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 13:10:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-13 13:10:00,695 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 90 [2020-10-13 13:10:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:00,695 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-13 13:10:00,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:10:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-13 13:10:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:10:00,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:00,697 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:00,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:10:00,700 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash -412781540, now seen corresponding path program 13 times [2020-10-13 13:10:00,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:00,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525541687] [2020-10-13 13:10:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:10:05,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:10:05,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:10:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:10:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:05,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:05,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:05,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:10:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:10:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:10:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:10:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:05,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:10:05,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:10:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:05,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:10:05,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-13 13:10:05,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525541687] [2020-10-13 13:10:05,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:05,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:10:05,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307433984] [2020-10-13 13:10:05,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:10:05,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:05,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:10:05,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:10:05,849 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 7 states. [2020-10-13 13:10:06,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:06,011 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2020-10-13 13:10:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:10:06,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-13 13:10:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:06,013 INFO L225 Difference]: With dead ends: 105 [2020-10-13 13:10:06,013 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:10:06,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:10:06,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:10:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-10-13 13:10:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 13:10:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-10-13 13:10:06,030 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 92 [2020-10-13 13:10:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:06,031 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-13 13:10:06,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:10:06,031 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-10-13 13:10:06,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:10:06,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:06,033 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:06,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:10:06,034 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:06,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:06,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1888462793, now seen corresponding path program 14 times [2020-10-13 13:10:06,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:06,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509605628] [2020-10-13 13:10:06,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:10:11,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:10:11,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:10:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 13:10:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:10:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:11,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:10:11,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:10:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:11,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:10:11,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:10:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:10:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-13 13:10:11,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509605628] [2020-10-13 13:10:11,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:11,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:10:11,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471115335] [2020-10-13 13:10:11,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:10:11,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:11,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:10:11,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:10:11,241 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2020-10-13 13:10:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:11,377 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2020-10-13 13:10:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:10:11,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-13 13:10:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:11,379 INFO L225 Difference]: With dead ends: 93 [2020-10-13 13:10:11,379 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:10:11,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:10:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:10:11,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 13:10:11,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 13:10:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-13 13:10:11,387 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 104 [2020-10-13 13:10:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:11,393 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-13 13:10:11,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:10:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-13 13:10:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:10:11,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:11,396 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:11,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:10:11,396 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash 637496469, now seen corresponding path program 15 times [2020-10-13 13:10:11,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:11,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805364332] [2020-10-13 13:10:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:10:16,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:10:16,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:10:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:16,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:16,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:10:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:16,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:10:16,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:10:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:10:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:10:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 13:10:16,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805364332] [2020-10-13 13:10:16,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:16,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:10:16,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824094877] [2020-10-13 13:10:16,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:10:16,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:16,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:10:16,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:10:16,606 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 10 states. [2020-10-13 13:10:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:16,741 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2020-10-13 13:10:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:10:16,741 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-13 13:10:16,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:16,742 INFO L225 Difference]: With dead ends: 114 [2020-10-13 13:10:16,742 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 13:10:16,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:10:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 13:10:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 13:10:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 13:10:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-13 13:10:16,750 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 106 [2020-10-13 13:10:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:16,750 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-13 13:10:16,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:10:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-13 13:10:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:10:16,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:16,751 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:16,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:10:16,752 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:16,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1754720425, now seen corresponding path program 16 times [2020-10-13 13:10:16,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:16,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786140849] [2020-10-13 13:10:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:10:21,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:10:21,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:10:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 13:10:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:10:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:21,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:21,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:10:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:10:21,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:10:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:21,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:10:21,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:10:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:21,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:10:21,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 13:10:21,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786140849] [2020-10-13 13:10:21,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:21,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:10:21,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79232864] [2020-10-13 13:10:21,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:10:21,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:10:21,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:10:21,978 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 11 states. [2020-10-13 13:10:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:22,074 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-10-13 13:10:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:10:22,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 13:10:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:22,075 INFO L225 Difference]: With dead ends: 97 [2020-10-13 13:10:22,076 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 13:10:22,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:10:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 13:10:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 13:10:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 13:10:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-13 13:10:22,081 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 108 [2020-10-13 13:10:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:22,082 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-13 13:10:22,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:10:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-13 13:10:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:10:22,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:22,088 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:22,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:10:22,089 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash 314893237, now seen corresponding path program 17 times [2020-10-13 13:10:22,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:22,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992814346] [2020-10-13 13:10:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:10:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:27,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:27,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:27,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:27,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:27,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:27,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:10:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:27,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:27,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:10:27,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:27,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:10:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:27,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:27,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:10:27,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:27,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:10:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:27,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:27,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:10:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 13:10:27,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992814346] [2020-10-13 13:10:27,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:27,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:10:27,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436297300] [2020-10-13 13:10:27,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:10:27,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:27,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:10:27,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:10:27,329 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 11 states. [2020-10-13 13:10:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:27,466 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2020-10-13 13:10:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:10:27,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 13:10:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:27,467 INFO L225 Difference]: With dead ends: 120 [2020-10-13 13:10:27,467 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 13:10:27,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:10:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 13:10:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 13:10:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 13:10:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-10-13 13:10:27,475 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 110 [2020-10-13 13:10:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:27,477 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-10-13 13:10:27,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:10:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-10-13 13:10:27,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:10:27,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:27,479 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:27,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:10:27,479 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:27,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:27,480 INFO L82 PathProgramCache]: Analyzing trace with hash 234315127, now seen corresponding path program 18 times [2020-10-13 13:10:27,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:27,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123910637] [2020-10-13 13:10:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:10:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:10:32,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:10:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:10:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:10:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:32,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:32,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:10:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:32,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:10:32,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:10:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:10:32,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:10:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:10:32,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 13:10:32,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123910637] [2020-10-13 13:10:32,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:32,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:10:32,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437533775] [2020-10-13 13:10:32,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:10:32,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:32,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:10:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:10:32,683 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 12 states. [2020-10-13 13:10:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:32,799 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2020-10-13 13:10:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:10:32,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 13:10:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:32,803 INFO L225 Difference]: With dead ends: 101 [2020-10-13 13:10:32,803 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 13:10:32,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:10:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 13:10:32,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 13:10:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 13:10:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2020-10-13 13:10:32,809 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 112 [2020-10-13 13:10:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:32,809 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2020-10-13 13:10:32,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:10:32,809 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2020-10-13 13:10:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:10:32,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:32,811 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:32,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:10:32,811 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:32,811 INFO L82 PathProgramCache]: Analyzing trace with hash 517611989, now seen corresponding path program 19 times [2020-10-13 13:10:32,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:32,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954951658] [2020-10-13 13:10:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:34,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:10:37,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:10:37,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:10:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:10:37,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:37,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:37,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:10:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:37,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:10:37,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:10:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:37,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:10:37,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:10:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:38,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:38,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:10:38,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2020-10-13 13:10:38,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954951658] [2020-10-13 13:10:38,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:38,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:10:38,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982813106] [2020-10-13 13:10:38,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:10:38,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:10:38,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:10:38,027 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 12 states. [2020-10-13 13:10:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:38,172 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-10-13 13:10:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:10:38,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 13:10:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:38,173 INFO L225 Difference]: With dead ends: 126 [2020-10-13 13:10:38,173 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 13:10:38,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:10:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 13:10:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 13:10:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 13:10:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-13 13:10:38,178 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 114 [2020-10-13 13:10:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:38,178 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-13 13:10:38,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:10:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-13 13:10:38,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 13:10:38,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:38,180 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:38,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:10:38,180 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:38,181 INFO L82 PathProgramCache]: Analyzing trace with hash -455742825, now seen corresponding path program 20 times [2020-10-13 13:10:38,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:38,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686866252] [2020-10-13 13:10:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:10:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:43,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:10:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:10:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:10:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:10:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:10:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:43,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:43,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:43,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:10:43,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-13 13:10:43,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686866252] [2020-10-13 13:10:43,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:43,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:10:43,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822268467] [2020-10-13 13:10:43,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:10:43,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:10:43,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:10:43,370 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 8 states. [2020-10-13 13:10:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:43,536 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2020-10-13 13:10:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:10:43,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-13 13:10:43,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:43,537 INFO L225 Difference]: With dead ends: 131 [2020-10-13 13:10:43,537 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 13:10:43,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 13:10:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-13 13:10:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 13:10:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-10-13 13:10:43,542 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 116 [2020-10-13 13:10:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:43,543 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-10-13 13:10:43,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:10:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-10-13 13:10:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 13:10:43,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:43,544 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:43,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 13:10:43,545 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:43,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1708744754, now seen corresponding path program 21 times [2020-10-13 13:10:43,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:43,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111846406] [2020-10-13 13:10:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:43,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:10:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:48,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:10:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:48,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:10:48,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:48,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:10:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:48,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 13:10:48,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 13:10:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:10:48,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2020-10-13 13:10:48,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111846406] [2020-10-13 13:10:48,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:48,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:10:48,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820090580] [2020-10-13 13:10:48,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:10:48,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:48,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:10:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:48,841 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 13 states. [2020-10-13 13:10:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:48,991 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-10-13 13:10:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:10:48,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 13:10:48,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:48,992 INFO L225 Difference]: With dead ends: 113 [2020-10-13 13:10:48,992 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 13:10:48,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:48,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 13:10:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 13:10:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 13:10:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-13 13:10:48,999 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 128 [2020-10-13 13:10:48,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:48,999 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-13 13:10:48,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:10:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-13 13:10:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 13:10:49,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:49,003 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:49,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 13:10:49,004 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:49,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1182964336, now seen corresponding path program 22 times [2020-10-13 13:10:49,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:49,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200498622] [2020-10-13 13:10:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:49,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:54,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 13:10:54,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:10:54,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:10:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:10:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:54,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:54,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:54,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:54,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:10:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:54,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:54,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:10:54,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:10:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:54,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:54,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:54,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:10:54,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:54,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 13:10:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:54,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:54,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:10:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-10-13 13:10:54,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200498622] [2020-10-13 13:10:54,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:54,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:10:54,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128944351] [2020-10-13 13:10:54,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:10:54,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:10:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:54,266 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 13 states. [2020-10-13 13:10:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:54,403 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2020-10-13 13:10:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:10:54,404 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 13:10:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:54,405 INFO L225 Difference]: With dead ends: 140 [2020-10-13 13:10:54,405 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 13:10:54,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 13:10:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 13:10:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 13:10:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-13 13:10:54,416 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 130 [2020-10-13 13:10:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:54,416 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-13 13:10:54,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:10:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-13 13:10:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 13:10:54,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:54,417 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:54,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 13:10:54,418 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash -6067630, now seen corresponding path program 23 times [2020-10-13 13:10:54,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:54,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152163696] [2020-10-13 13:10:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 13:10:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:10:59,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:10:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:10:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:10:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:59,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:59,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:59,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:10:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:59,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:10:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:10:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:10:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:10:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:59,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:10:59,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 13:10:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2020-10-13 13:10:59,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152163696] [2020-10-13 13:10:59,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:59,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:10:59,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787204830] [2020-10-13 13:10:59,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:10:59,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:59,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:10:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:59,642 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 9 states. [2020-10-13 13:10:59,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:59,855 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2020-10-13 13:10:59,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:10:59,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-10-13 13:10:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:59,857 INFO L225 Difference]: With dead ends: 145 [2020-10-13 13:10:59,857 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 13:10:59,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:10:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 13:10:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-13 13:10:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 13:10:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-10-13 13:10:59,864 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 132 [2020-10-13 13:10:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:59,865 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-10-13 13:10:59,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:10:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-10-13 13:10:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 13:10:59,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:59,866 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:59,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 13:10:59,867 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:59,867 INFO L82 PathProgramCache]: Analyzing trace with hash 731989357, now seen corresponding path program 24 times [2020-10-13 13:10:59,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:59,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091287389] [2020-10-13 13:10:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:11:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:05,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:05,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:05,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:11:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:05,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:05,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:11:05,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:11:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 13:11:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:05,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:05,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:05,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:11:05,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2020-10-13 13:11:05,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091287389] [2020-10-13 13:11:05,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:05,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:11:05,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998044370] [2020-10-13 13:11:05,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:11:05,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:05,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:11:05,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:05,201 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 14 states. [2020-10-13 13:11:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:05,357 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2020-10-13 13:11:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:11:05,357 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 144 [2020-10-13 13:11:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:05,358 INFO L225 Difference]: With dead ends: 125 [2020-10-13 13:11:05,359 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 13:11:05,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:05,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 13:11:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 13:11:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 13:11:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2020-10-13 13:11:05,367 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 144 [2020-10-13 13:11:05,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:05,368 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2020-10-13 13:11:05,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:11:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2020-10-13 13:11:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 13:11:05,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:05,370 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:05,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 13:11:05,371 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:05,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1586492469, now seen corresponding path program 25 times [2020-10-13 13:11:05,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:05,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510145767] [2020-10-13 13:11:05,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 13:11:10,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:11:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:11:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:11:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:10,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:10,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:10,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:11:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:10,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:11:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:10,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:10,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:11:10,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 13:11:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:10,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:11:10,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2020-10-13 13:11:10,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510145767] [2020-10-13 13:11:10,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:10,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:11:10,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748109478] [2020-10-13 13:11:10,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:11:10,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:10,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:11:10,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:10,704 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 14 states. [2020-10-13 13:11:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:10,813 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions. [2020-10-13 13:11:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:11:10,813 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 146 [2020-10-13 13:11:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:10,814 INFO L225 Difference]: With dead ends: 154 [2020-10-13 13:11:10,814 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 13:11:10,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 13:11:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 13:11:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 13:11:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-10-13 13:11:10,824 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 146 [2020-10-13 13:11:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:10,824 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-10-13 13:11:10,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:11:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-10-13 13:11:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:11:10,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:10,826 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:10,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 13:11:10,826 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1547154291, now seen corresponding path program 26 times [2020-10-13 13:11:10,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:10,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840713013] [2020-10-13 13:11:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:11:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:15,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:15,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:11:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:16,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:16,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 13:11:16,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:11:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:16,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:16,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 13:11:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 13:11:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:16,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:16,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 13:11:16,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2020-10-13 13:11:16,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840713013] [2020-10-13 13:11:16,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:16,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:11:16,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106140919] [2020-10-13 13:11:16,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:11:16,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:16,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:11:16,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:11:16,313 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 15 states. [2020-10-13 13:11:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:16,480 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2020-10-13 13:11:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:11:16,481 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 13:11:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:16,484 INFO L225 Difference]: With dead ends: 156 [2020-10-13 13:11:16,484 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 13:11:16,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:11:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 13:11:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 13:11:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 13:11:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2020-10-13 13:11:16,491 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 148 [2020-10-13 13:11:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:16,491 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2020-10-13 13:11:16,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:11:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2020-10-13 13:11:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 13:11:16,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:16,493 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:16,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 13:11:16,493 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1897096399, now seen corresponding path program 27 times [2020-10-13 13:11:16,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:16,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105798697] [2020-10-13 13:11:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:11:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:21,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:11:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:21,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:21,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:11:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:11:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:21,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:21,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:11:21,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 13:11:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:21,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:21,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:21,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:11:21,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2020-10-13 13:11:21,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105798697] [2020-10-13 13:11:21,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:21,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:11:21,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557899995] [2020-10-13 13:11:21,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:11:21,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:21,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:11:21,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:11:21,832 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand 15 states. [2020-10-13 13:11:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:22,006 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2020-10-13 13:11:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:11:22,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 13:11:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:22,008 INFO L225 Difference]: With dead ends: 131 [2020-10-13 13:11:22,008 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 13:11:22,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:11:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 13:11:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 13:11:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 13:11:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-13 13:11:22,014 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 150 [2020-10-13 13:11:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:22,014 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-13 13:11:22,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:11:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-13 13:11:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 13:11:22,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:22,016 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:22,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 13:11:22,016 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1389877933, now seen corresponding path program 28 times [2020-10-13 13:11:22,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:22,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255632726] [2020-10-13 13:11:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:22,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:22,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:11:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:27,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:27,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:27,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:27,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:11:27,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:27,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:11:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:27,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:11:27,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:11:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:27,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:27,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:27,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:27,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:11:27,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:27,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 13:11:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:27,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:11:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2020-10-13 13:11:27,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255632726] [2020-10-13 13:11:27,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:27,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:11:27,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120608690] [2020-10-13 13:11:27,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:11:27,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:27,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:11:27,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:11:27,381 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 16 states. [2020-10-13 13:11:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:27,495 INFO L93 Difference]: Finished difference Result 162 states and 182 transitions. [2020-10-13 13:11:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:11:27,496 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 13:11:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:27,497 INFO L225 Difference]: With dead ends: 162 [2020-10-13 13:11:27,497 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 13:11:27,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:11:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 13:11:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 13:11:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 13:11:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2020-10-13 13:11:27,504 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 152 [2020-10-13 13:11:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:27,505 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2020-10-13 13:11:27,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:11:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2020-10-13 13:11:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 13:11:27,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:27,506 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:27,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 13:11:27,507 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash -663158289, now seen corresponding path program 29 times [2020-10-13 13:11:27,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:27,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83387420] [2020-10-13 13:11:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:27,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:11:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:11:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:32,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:32,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:32,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:32,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:32,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:11:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:32,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:32,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:32,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:11:32,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:11:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:11:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:11:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:32,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 13:11:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:32,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:32,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:11:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-10-13 13:11:32,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83387420] [2020-10-13 13:11:32,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:32,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:11:32,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031813588] [2020-10-13 13:11:32,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:11:32,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:32,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:11:32,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:11:32,752 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 10 states. [2020-10-13 13:11:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:32,971 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2020-10-13 13:11:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:11:32,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-10-13 13:11:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:32,972 INFO L225 Difference]: With dead ends: 167 [2020-10-13 13:11:32,972 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 13:11:32,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:32,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 13:11:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-13 13:11:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 13:11:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-10-13 13:11:32,979 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 154 [2020-10-13 13:11:32,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:32,979 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-10-13 13:11:32,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:11:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-10-13 13:11:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 13:11:32,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:32,981 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:32,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 13:11:32,981 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:32,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:32,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1579833974, now seen corresponding path program 30 times [2020-10-13 13:11:32,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:32,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953672149] [2020-10-13 13:11:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:38,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 13:11:38,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:11:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:11:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 13:11:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:11:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:38,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:38,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:38,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:38,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:11:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:11:38,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:38,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:38,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:11:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:38,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:38,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 13:11:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:38,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 13:11:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2020-10-13 13:11:38,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953672149] [2020-10-13 13:11:38,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:38,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:11:38,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174677277] [2020-10-13 13:11:38,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:11:38,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:38,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:11:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:11:38,337 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 16 states. [2020-10-13 13:11:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:38,514 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-10-13 13:11:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:11:38,515 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 166 [2020-10-13 13:11:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:38,517 INFO L225 Difference]: With dead ends: 143 [2020-10-13 13:11:38,517 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 13:11:38,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:11:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 13:11:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 13:11:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 13:11:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-10-13 13:11:38,524 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 166 [2020-10-13 13:11:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:38,525 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-10-13 13:11:38,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:11:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-10-13 13:11:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 13:11:38,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:38,526 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:38,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 13:11:38,527 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:38,527 INFO L82 PathProgramCache]: Analyzing trace with hash -387703704, now seen corresponding path program 31 times [2020-10-13 13:11:38,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:38,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755145533] [2020-10-13 13:11:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:43,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 13:11:43,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 13:11:43,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:11:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:11:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:43,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:43,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:11:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:43,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:11:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:43,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:11:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:43,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:43,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:43,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:43,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:11:43,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 13:11:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:43,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:43,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:11:43,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2020-10-13 13:11:43,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755145533] [2020-10-13 13:11:43,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:43,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:11:43,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973995099] [2020-10-13 13:11:43,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:11:43,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:43,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:11:43,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:43,920 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 17 states. [2020-10-13 13:11:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:44,095 INFO L93 Difference]: Finished difference Result 176 states and 198 transitions. [2020-10-13 13:11:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:11:44,095 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 13:11:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:44,096 INFO L225 Difference]: With dead ends: 176 [2020-10-13 13:11:44,096 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 13:11:44,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 13:11:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 13:11:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 13:11:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2020-10-13 13:11:44,103 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 168 [2020-10-13 13:11:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:44,103 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2020-10-13 13:11:44,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:11:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2020-10-13 13:11:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:11:44,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:44,104 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:44,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 13:11:44,105 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1188921430, now seen corresponding path program 32 times [2020-10-13 13:11:44,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:44,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001575355] [2020-10-13 13:11:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 13:11:49,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:11:49,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:11:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:11:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:49,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:11:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:49,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:11:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:49,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:11:49,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:11:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:49,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:49,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:49,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:11:49,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:49,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:49,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2020-10-13 13:11:49,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001575355] [2020-10-13 13:11:49,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:49,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:11:49,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720663335] [2020-10-13 13:11:49,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:11:49,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:49,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:11:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:11:49,506 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 18 states. [2020-10-13 13:11:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:49,627 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2020-10-13 13:11:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:11:49,628 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-13 13:11:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:49,629 INFO L225 Difference]: With dead ends: 178 [2020-10-13 13:11:49,629 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 13:11:49,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:11:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 13:11:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 13:11:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 13:11:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2020-10-13 13:11:49,636 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 170 [2020-10-13 13:11:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:49,637 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2020-10-13 13:11:49,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:11:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2020-10-13 13:11:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 13:11:49,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:49,638 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 15, 15, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:49,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 13:11:49,639 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:49,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1934957164, now seen corresponding path program 33 times [2020-10-13 13:11:49,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:49,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295662679] [2020-10-13 13:11:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:54,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:54,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:11:54,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:11:54,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:11:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 13:11:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:11:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:54,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:54,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:54,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:11:54,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:11:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:54,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:11:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:11:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:54,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:11:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 13:11:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:54,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:54,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:54,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:11:54,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 214 proven. 305 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2020-10-13 13:11:54,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295662679] [2020-10-13 13:11:54,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:54,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:11:54,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981049454] [2020-10-13 13:11:54,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:11:54,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:54,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:11:54,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:11:54,963 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 11 states. [2020-10-13 13:11:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:55,199 INFO L93 Difference]: Finished difference Result 183 states and 209 transitions. [2020-10-13 13:11:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:11:55,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-10-13 13:11:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:55,200 INFO L225 Difference]: With dead ends: 183 [2020-10-13 13:11:55,200 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 13:11:55,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:11:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 13:11:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-13 13:11:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 13:11:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-10-13 13:11:55,208 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 172 [2020-10-13 13:11:55,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:55,210 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-10-13 13:11:55,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:11:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-10-13 13:11:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 13:11:55,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:55,212 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 15, 15, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:55,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 13:11:55,212 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:55,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1107079033, now seen corresponding path program 34 times [2020-10-13 13:11:55,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:55,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631879364] [2020-10-13 13:11:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:00,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 13:12:00,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:00,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 13:12:00,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:12:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:12:00,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:00,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:12:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:00,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 13:12:00,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:00,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:12:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:00,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:00,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 13:12:00,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 13:12:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:00,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:00,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:00,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 13:12:00,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:00,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:00,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:00,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:00,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1585 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2020-10-13 13:12:00,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631879364] [2020-10-13 13:12:00,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:00,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 13:12:00,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772356484] [2020-10-13 13:12:00,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:12:00,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:00,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:12:00,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:12:00,738 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 19 states. [2020-10-13 13:12:00,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:00,935 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2020-10-13 13:12:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:12:00,935 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 184 [2020-10-13 13:12:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:00,936 INFO L225 Difference]: With dead ends: 188 [2020-10-13 13:12:00,936 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 13:12:00,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:12:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 13:12:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 13:12:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 13:12:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-10-13 13:12:00,942 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 184 [2020-10-13 13:12:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:00,942 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-10-13 13:12:00,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:12:00,942 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-10-13 13:12:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 13:12:00,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:00,943 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 16, 16, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:00,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 13:12:00,943 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:00,944 INFO L82 PathProgramCache]: Analyzing trace with hash -823726135, now seen corresponding path program 35 times [2020-10-13 13:12:00,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:00,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516986697] [2020-10-13 13:12:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:00,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:05,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 13:12:05,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:12:05,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:12:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:12:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:06,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:06,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:06,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:06,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:06,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:06,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:12:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:12:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:06,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:06,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:12:06,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 13:12:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:12:06,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2020-10-13 13:12:06,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516986697] [2020-10-13 13:12:06,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:06,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 13:12:06,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079294615] [2020-10-13 13:12:06,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 13:12:06,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:06,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 13:12:06,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:12:06,424 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 20 states. [2020-10-13 13:12:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:06,560 INFO L93 Difference]: Finished difference Result 190 states and 214 transitions. [2020-10-13 13:12:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 13:12:06,560 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 186 [2020-10-13 13:12:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:06,561 INFO L225 Difference]: With dead ends: 190 [2020-10-13 13:12:06,561 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 13:12:06,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:12:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 13:12:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 13:12:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 13:12:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2020-10-13 13:12:06,567 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 186 [2020-10-13 13:12:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:06,567 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2020-10-13 13:12:06,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 13:12:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2020-10-13 13:12:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 13:12:06,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:06,569 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 17, 17, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:06,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 13:12:06,569 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash 895469195, now seen corresponding path program 36 times [2020-10-13 13:12:06,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:06,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319796703] [2020-10-13 13:12:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:12:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:11,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:12:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:11,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:11,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:11,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:12:11,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:11,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:12:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:11,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:11,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:12:11,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:12:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:11,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:11,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:11,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 13:12:11,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:11,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2020-10-13 13:12:11,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319796703] [2020-10-13 13:12:11,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:11,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:12:11,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323477331] [2020-10-13 13:12:11,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:12:11,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:11,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:12:11,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:12:11,995 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand 17 states. [2020-10-13 13:12:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:12,168 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2020-10-13 13:12:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:12:12,169 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 188 [2020-10-13 13:12:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:12,170 INFO L225 Difference]: With dead ends: 161 [2020-10-13 13:12:12,170 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 13:12:12,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:12:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 13:12:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-13 13:12:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 13:12:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2020-10-13 13:12:12,176 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 188 [2020-10-13 13:12:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:12,176 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2020-10-13 13:12:12,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:12:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2020-10-13 13:12:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 13:12:12,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:12,178 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 17, 17, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:12,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 13:12:12,178 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:12,179 INFO L82 PathProgramCache]: Analyzing trace with hash -965122839, now seen corresponding path program 37 times [2020-10-13 13:12:12,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:12,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013064017] [2020-10-13 13:12:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:12,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 13:12:17,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 13:12:17,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:12:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:12:17,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:12:17,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:17,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:17,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:12:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 13:12:17,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:12:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:12:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:12:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:17,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 13:12:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 13:12:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:17,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:17,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 13:12:17,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1676 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2020-10-13 13:12:17,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013064017] [2020-10-13 13:12:17,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:17,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:12:17,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318654689] [2020-10-13 13:12:17,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:12:17,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:17,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:12:17,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:12:17,581 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand 12 states. [2020-10-13 13:12:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:17,861 INFO L93 Difference]: Finished difference Result 199 states and 227 transitions. [2020-10-13 13:12:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:12:17,861 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 190 [2020-10-13 13:12:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:17,863 INFO L225 Difference]: With dead ends: 199 [2020-10-13 13:12:17,863 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 13:12:17,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:12:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 13:12:17,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-10-13 13:12:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 13:12:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2020-10-13 13:12:17,869 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 190 [2020-10-13 13:12:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:17,869 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2020-10-13 13:12:17,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:12:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2020-10-13 13:12:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 13:12:17,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:17,871 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 17, 17, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:17,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 13:12:17,871 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:17,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:17,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1719086468, now seen corresponding path program 38 times [2020-10-13 13:12:17,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:17,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727071217] [2020-10-13 13:12:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:17,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:18,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:22,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:22,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 13:12:22,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 13:12:22,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:12:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 13:12:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:12:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:23,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:12:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:23,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 13:12:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:12:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:23,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 13:12:23,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 13:12:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2020-10-13 13:12:23,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727071217] [2020-10-13 13:12:23,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:23,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:12:23,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467833711] [2020-10-13 13:12:23,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:12:23,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:23,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:12:23,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:12:23,399 INFO L87 Difference]: Start difference. First operand 121 states and 134 transitions. Second operand 18 states. [2020-10-13 13:12:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:23,555 INFO L93 Difference]: Finished difference Result 171 states and 194 transitions. [2020-10-13 13:12:23,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:12:23,556 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 202 [2020-10-13 13:12:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:23,557 INFO L225 Difference]: With dead ends: 171 [2020-10-13 13:12:23,557 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 13:12:23,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:12:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 13:12:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-13 13:12:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 13:12:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-10-13 13:12:23,563 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 202 [2020-10-13 13:12:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:23,563 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-10-13 13:12:23,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:12:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-10-13 13:12:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 13:12:23,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:23,565 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 17, 17, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:23,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 13:12:23,565 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:23,566 INFO L82 PathProgramCache]: Analyzing trace with hash -242584222, now seen corresponding path program 39 times [2020-10-13 13:12:23,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:23,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354988790] [2020-10-13 13:12:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 13:12:28,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:28,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:12:28,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:12:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:12:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:28,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:28,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:12:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:28,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:28,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:28,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 13:12:28,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:28,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:12:28,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:28,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:12:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:29,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:29,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:29,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:29,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 13:12:29,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:12:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:29,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-13 13:12:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:29,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:29,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2014 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2020-10-13 13:12:29,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354988790] [2020-10-13 13:12:29,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:29,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 13:12:29,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619725402] [2020-10-13 13:12:29,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 13:12:29,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:29,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 13:12:29,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:12:29,145 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 21 states. [2020-10-13 13:12:29,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:29,273 INFO L93 Difference]: Finished difference Result 208 states and 234 transitions. [2020-10-13 13:12:29,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 13:12:29,274 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 204 [2020-10-13 13:12:29,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:29,275 INFO L225 Difference]: With dead ends: 208 [2020-10-13 13:12:29,276 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 13:12:29,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:12:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 13:12:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-13 13:12:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 13:12:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2020-10-13 13:12:29,282 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 204 [2020-10-13 13:12:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:29,282 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2020-10-13 13:12:29,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 13:12:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2020-10-13 13:12:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 13:12:29,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:29,284 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 18, 18, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:29,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 13:12:29,284 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:29,284 INFO L82 PathProgramCache]: Analyzing trace with hash -220733532, now seen corresponding path program 40 times [2020-10-13 13:12:29,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:29,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035357837] [2020-10-13 13:12:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:34,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:34,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 13:12:34,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-13 13:12:34,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:12:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:12:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:12:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:34,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:34,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:34,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:34,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 13:12:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:34,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:12:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:34,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 13:12:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:34,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:34,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:34,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 13:12:34,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:34,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:34,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:12:34,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:12:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:34,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:34,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:12:34,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:34,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 13:12:34,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:12:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:34,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2020-10-13 13:12:34,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035357837] [2020-10-13 13:12:34,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:34,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:12:34,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486010265] [2020-10-13 13:12:34,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:12:34,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:34,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:12:34,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:12:34,824 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand 13 states. [2020-10-13 13:12:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:35,095 INFO L93 Difference]: Finished difference Result 213 states and 243 transitions. [2020-10-13 13:12:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:12:35,096 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2020-10-13 13:12:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:35,097 INFO L225 Difference]: With dead ends: 213 [2020-10-13 13:12:35,097 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 13:12:35,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:12:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 13:12:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-10-13 13:12:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 13:12:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-10-13 13:12:35,103 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 206 [2020-10-13 13:12:35,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:35,104 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-10-13 13:12:35,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:12:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-10-13 13:12:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 13:12:35,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:35,106 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 18, 18, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:35,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 13:12:35,106 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:35,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash -939405889, now seen corresponding path program 41 times [2020-10-13 13:12:35,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:35,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677279601] [2020-10-13 13:12:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:40,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 13:12:40,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:40,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:12:40,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:40,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:12:40,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-13 13:12:40,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:12:40,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:40,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:40,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:40,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 13:12:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:40,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:12:40,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 13:12:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:40,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:12:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:40,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:12:40,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 13:12:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 13:12:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2394 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2020-10-13 13:12:40,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677279601] [2020-10-13 13:12:40,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:40,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 13:12:40,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862260762] [2020-10-13 13:12:40,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:12:40,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:40,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:12:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:12:40,723 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 19 states. [2020-10-13 13:12:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:40,896 INFO L93 Difference]: Finished difference Result 183 states and 208 transitions. [2020-10-13 13:12:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:12:40,896 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 218 [2020-10-13 13:12:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:40,898 INFO L225 Difference]: With dead ends: 183 [2020-10-13 13:12:40,898 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 13:12:40,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:12:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 13:12:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-13 13:12:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 13:12:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2020-10-13 13:12:40,905 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 218 [2020-10-13 13:12:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:40,905 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2020-10-13 13:12:40,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:12:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2020-10-13 13:12:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 13:12:40,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:40,907 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 18, 18, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:40,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 13:12:40,907 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1245550237, now seen corresponding path program 42 times [2020-10-13 13:12:40,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:40,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151721272] [2020-10-13 13:12:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:46,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-13 13:12:46,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-13 13:12:46,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 13:12:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:12:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:46,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:46,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:46,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 13:12:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:12:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 13:12:46,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:12:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:46,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:12:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:12:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 13:12:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:46,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:12:46,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 13:12:46,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:12:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:46,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2020-10-13 13:12:46,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151721272] [2020-10-13 13:12:46,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:46,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 13:12:46,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250713543] [2020-10-13 13:12:46,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 13:12:46,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:46,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 13:12:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 13:12:46,631 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand 22 states. [2020-10-13 13:12:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:46,788 INFO L93 Difference]: Finished difference Result 222 states and 250 transitions. [2020-10-13 13:12:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 13:12:46,789 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 220 [2020-10-13 13:12:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:46,790 INFO L225 Difference]: With dead ends: 222 [2020-10-13 13:12:46,790 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 13:12:46,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 13:12:46,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 13:12:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-13 13:12:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-13 13:12:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2020-10-13 13:12:46,797 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 220 [2020-10-13 13:12:46,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:46,798 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2020-10-13 13:12:46,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 13:12:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2020-10-13 13:12:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 13:12:46,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:46,800 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 19, 19, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:46,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 13:12:46,800 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 859978975, now seen corresponding path program 43 times [2020-10-13 13:12:46,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:46,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592078450] [2020-10-13 13:12:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking...