/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:34:33,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:34:33,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:34:33,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:34:33,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:34:33,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:34:33,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:34:33,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:34:33,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:34:33,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:34:33,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:34:33,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:34:33,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:34:33,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:34:33,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:34:33,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:34:33,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:34:33,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:34:33,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:34:33,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:34:33,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:34:33,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:34:33,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:34:33,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:34:33,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:34:33,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:34:33,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:34:33,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:34:33,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:34:33,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:34:33,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:34:33,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:34:33,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:34:33,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:34:33,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:34:33,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:34:33,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:34:33,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:34:33,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:34:33,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:34:33,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:34:33,600 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 [2020-10-29 03:34:33,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:34:33,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:34:33,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:34:33,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:34:33,666 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:34:33,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:34:33,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:34:33,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:34:33,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:34:33,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:34:33,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:34:33,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:34:33,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:34:33,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:34:33,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:34:33,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:34:33,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:34:33,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:34:33,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:34:33,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:34:33,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:34:33,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:33,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:34:33,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:34:33,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:34:33,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:34:33,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:34:33,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:34:33,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:34:33,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:34:34,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:34:34,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:34:34,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:34:34,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:34:34,166 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:34:34,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2020-10-29 03:34:34,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/691208096/5809747f56a24b698979f2d869709664/FLAGce2c5a0c8 [2020-10-29 03:34:34,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:34:34,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2020-10-29 03:34:34,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/691208096/5809747f56a24b698979f2d869709664/FLAGce2c5a0c8 [2020-10-29 03:34:35,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/691208096/5809747f56a24b698979f2d869709664 [2020-10-29 03:34:35,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:34:35,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:34:35,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:35,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:34:35,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:34:35,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7bc089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35, skipping insertion in model container [2020-10-29 03:34:35,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:34:35,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:34:35,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:35,555 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:34:35,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:35,652 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:34:35,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35 WrapperNode [2020-10-29 03:34:35,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:35,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:34:35,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:34:35,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:34:35,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (1/1) ... [2020-10-29 03:34:35,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:34:35,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:34:35,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:34:35,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:34:35,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (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 [2020-10-29 03:34:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:34:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:34:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:34:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:34:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:34:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:34:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:34:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:34:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:34:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:34:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:34:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:34:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:34:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:34:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:34:36,596 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:34:36,596 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-29 03:34:36,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:36 BoogieIcfgContainer [2020-10-29 03:34:36,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:34:36,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:34:36,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:34:36,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:34:36,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:34:35" (1/3) ... [2020-10-29 03:34:36,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cc8ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:36, skipping insertion in model container [2020-10-29 03:34:36,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:35" (2/3) ... [2020-10-29 03:34:36,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cc8ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:36, skipping insertion in model container [2020-10-29 03:34:36,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:36" (3/3) ... [2020-10-29 03:34:36,609 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-2.i [2020-10-29 03:34:36,622 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:34:36,628 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:34:36,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:34:36,671 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:34:36,672 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:34:36,672 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:34:36,672 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:34:36,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:34:36,672 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:34:36,672 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:34:36,673 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:34:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-29 03:34:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:34:36,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:36,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:36,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1163458024, now seen corresponding path program 1 times [2020-10-29 03:34:36,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:36,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204018063] [2020-10-29 03:34:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:38,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:38,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:34:38,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:34:38,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1742 [2020-10-29 03:34:38,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:38,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:34:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:34:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:34:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:38,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:38,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:38,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:38,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:34:38,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:38,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:38,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204018063] [2020-10-29 03:34:38,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:34:38,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:34:38,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648110915] [2020-10-29 03:34:38,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:34:38,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:38,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:34:38,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:38,840 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-29 03:34:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:39,162 INFO L93 Difference]: Finished difference Result 95 states and 141 transitions. [2020-10-29 03:34:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:34:39,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-29 03:34:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:39,175 INFO L225 Difference]: With dead ends: 95 [2020-10-29 03:34:39,175 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 03:34:39,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 03:34:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-29 03:34:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:34:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-29 03:34:39,251 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 27 [2020-10-29 03:34:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:39,252 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-29 03:34:39,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:34:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-29 03:34:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:34:39,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:39,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:39,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:34:39,260 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1296943878, now seen corresponding path program 1 times [2020-10-29 03:34:39,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:39,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181853280] [2020-10-29 03:34:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:44,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:34:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:34:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:34:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:34:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:34:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:34:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:34:44,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:44,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:34:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 03:34:44,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181853280] [2020-10-29 03:34:44,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:44,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:34:44,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393419434] [2020-10-29 03:34:44,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:34:44,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:44,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:34:44,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:34:44,496 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-29 03:34:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:44,873 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-10-29 03:34:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:34:44,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-29 03:34:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:44,876 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:34:44,876 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:34:44,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:34:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:34:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-10-29 03:34:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:34:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-29 03:34:44,891 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 39 [2020-10-29 03:34:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:44,892 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-29 03:34:44,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:34:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-29 03:34:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:34:44,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:44,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:44,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:34:44,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:44,902 INFO L82 PathProgramCache]: Analyzing trace with hash -655793810, now seen corresponding path program 2 times [2020-10-29 03:34:44,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:44,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579857576] [2020-10-29 03:34:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:34:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:34:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:34:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:49,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:34:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:34:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:50,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:50,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:50,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:50,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:50,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 03:34:50,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579857576] [2020-10-29 03:34:50,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:50,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:34:50,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604847639] [2020-10-29 03:34:50,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:34:50,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:34:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:34:50,062 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 6 states. [2020-10-29 03:34:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:50,406 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2020-10-29 03:34:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:34:50,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-29 03:34:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:50,409 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:34:50,409 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:34:50,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:34:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:34:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-10-29 03:34:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:34:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-29 03:34:50,430 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 51 [2020-10-29 03:34:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:50,430 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-29 03:34:50,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:34:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-29 03:34:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 03:34:50,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:50,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1] [2020-10-29 03:34:50,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:34:50,436 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1473138658, now seen corresponding path program 3 times [2020-10-29 03:34:50,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:50,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496473752] [2020-10-29 03:34:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:55,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:34:55,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:34:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:34:55,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:55,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:34:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:34:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:34:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:55,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:34:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:55,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:34:55,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496473752] [2020-10-29 03:34:55,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:55,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:34:55,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176260291] [2020-10-29 03:34:55,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:34:55,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:55,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:34:55,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:34:55,652 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 7 states. [2020-10-29 03:34:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:56,112 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2020-10-29 03:34:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:34:56,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-29 03:34:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:56,114 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:34:56,114 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 03:34:56,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:34:56,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 03:34:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2020-10-29 03:34:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:34:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-10-29 03:34:56,139 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 63 [2020-10-29 03:34:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:56,139 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-10-29 03:34:56,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:34:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-10-29 03:34:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:34:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:56,143 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:56,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:34:56,144 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:56,144 INFO L82 PathProgramCache]: Analyzing trace with hash 653394006, now seen corresponding path program 4 times [2020-10-29 03:34:56,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:56,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733730707] [2020-10-29 03:34:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:01,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:35:01,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:35:01,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:01,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:35:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:35:01,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:35:01,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:01,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:01,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:01,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:01,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 03:35:01,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733730707] [2020-10-29 03:35:01,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:01,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:35:01,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631587402] [2020-10-29 03:35:01,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:35:01,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:01,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:35:01,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:01,378 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 8 states. [2020-10-29 03:35:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:01,796 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2020-10-29 03:35:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:35:01,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-29 03:35:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:01,798 INFO L225 Difference]: With dead ends: 162 [2020-10-29 03:35:01,799 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 03:35:01,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 03:35:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2020-10-29 03:35:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:35:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-10-29 03:35:01,811 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 75 [2020-10-29 03:35:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:01,812 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-10-29 03:35:01,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:35:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-10-29 03:35:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:35:01,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:01,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:01,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:35:01,814 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:01,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:01,815 INFO L82 PathProgramCache]: Analyzing trace with hash 157643466, now seen corresponding path program 5 times [2020-10-29 03:35:01,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:01,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136778071] [2020-10-29 03:35:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:06,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:35:06,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:35:06,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:06,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:35:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:35:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:35:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:06,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:06,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:07,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-29 03:35:07,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136778071] [2020-10-29 03:35:07,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:07,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:35:07,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106554859] [2020-10-29 03:35:07,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:35:07,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:35:07,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:07,022 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 9 states. [2020-10-29 03:35:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:07,519 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2020-10-29 03:35:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:35:07,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 03:35:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:07,521 INFO L225 Difference]: With dead ends: 184 [2020-10-29 03:35:07,521 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 03:35:07,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 03:35:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2020-10-29 03:35:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:35:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2020-10-29 03:35:07,533 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 87 [2020-10-29 03:35:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:07,534 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2020-10-29 03:35:07,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:35:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2020-10-29 03:35:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 03:35:07,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:07,536 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:07,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:35:07,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:07,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1917212866, now seen corresponding path program 6 times [2020-10-29 03:35:07,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:07,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468433420] [2020-10-29 03:35:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:12,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 03:35:12,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 03:35:12,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:12,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:35:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:35:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:35:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:12,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:12,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 03:35:12,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468433420] [2020-10-29 03:35:12,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:12,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:35:12,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422140222] [2020-10-29 03:35:12,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:35:12,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:35:12,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:12,818 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand 10 states. [2020-10-29 03:35:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:13,423 INFO L93 Difference]: Finished difference Result 206 states and 224 transitions. [2020-10-29 03:35:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:35:13,424 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-29 03:35:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:13,426 INFO L225 Difference]: With dead ends: 206 [2020-10-29 03:35:13,426 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 03:35:13,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 03:35:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-10-29 03:35:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:35:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2020-10-29 03:35:13,454 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 99 [2020-10-29 03:35:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:13,454 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2020-10-29 03:35:13,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:35:13,454 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2020-10-29 03:35:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:35:13,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:13,459 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:13,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:35:13,460 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:13,461 INFO L82 PathProgramCache]: Analyzing trace with hash 234855858, now seen corresponding path program 7 times [2020-10-29 03:35:13,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:13,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876366911] [2020-10-29 03:35:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:18,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:18,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 03:35:18,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:35:18,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:18,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:35:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:35:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:18,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:18,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:18,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:18,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-29 03:35:18,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876366911] [2020-10-29 03:35:18,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:18,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:35:18,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726301556] [2020-10-29 03:35:18,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:35:18,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:18,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:35:18,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:18,717 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand 11 states. [2020-10-29 03:35:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:19,498 INFO L93 Difference]: Finished difference Result 228 states and 246 transitions. [2020-10-29 03:35:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:35:19,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2020-10-29 03:35:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:19,500 INFO L225 Difference]: With dead ends: 228 [2020-10-29 03:35:19,500 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:35:19,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:35:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2020-10-29 03:35:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:35:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 136 transitions. [2020-10-29 03:35:19,522 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 136 transitions. Word has length 111 [2020-10-29 03:35:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:19,523 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 136 transitions. [2020-10-29 03:35:19,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:35:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 136 transitions. [2020-10-29 03:35:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 03:35:19,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:19,525 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:19,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:35:19,525 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:19,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:19,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1345825242, now seen corresponding path program 8 times [2020-10-29 03:35:19,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:19,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141363862] [2020-10-29 03:35:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:24,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:24,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 03:35:24,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:35:24,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:24,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:35:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:35:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:35:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:24,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:24,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:24,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:24,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:24,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:24,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-10-29 03:35:24,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141363862] [2020-10-29 03:35:24,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:24,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:35:24,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122755349] [2020-10-29 03:35:24,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:35:24,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:24,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:35:24,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:24,788 INFO L87 Difference]: Start difference. First operand 129 states and 136 transitions. Second operand 12 states. [2020-10-29 03:35:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:25,395 INFO L93 Difference]: Finished difference Result 250 states and 268 transitions. [2020-10-29 03:35:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:35:25,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-10-29 03:35:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:25,398 INFO L225 Difference]: With dead ends: 250 [2020-10-29 03:35:25,398 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 03:35:25,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 03:35:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2020-10-29 03:35:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 03:35:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2020-10-29 03:35:25,413 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 123 [2020-10-29 03:35:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:25,413 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 148 transitions. [2020-10-29 03:35:25,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:35:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2020-10-29 03:35:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 03:35:25,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:25,415 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:25,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:35:25,416 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:25,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1680134298, now seen corresponding path program 9 times [2020-10-29 03:35:25,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:25,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844142234] [2020-10-29 03:35:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:25,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:30,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:30,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 03:35:30,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5316 [2020-10-29 03:35:30,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:30,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:35:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:35:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:35:30,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:31,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:31,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:31,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:31,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:31,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:31,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:31,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:31,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2020-10-29 03:35:31,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844142234] [2020-10-29 03:35:31,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:31,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:35:31,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174998393] [2020-10-29 03:35:31,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:35:31,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:31,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:35:31,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:31,045 INFO L87 Difference]: Start difference. First operand 141 states and 148 transitions. Second operand 13 states. [2020-10-29 03:35:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:31,781 INFO L93 Difference]: Finished difference Result 272 states and 290 transitions. [2020-10-29 03:35:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:35:31,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 135 [2020-10-29 03:35:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:31,784 INFO L225 Difference]: With dead ends: 272 [2020-10-29 03:35:31,784 INFO L226 Difference]: Without dead ends: 159 [2020-10-29 03:35:31,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-29 03:35:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2020-10-29 03:35:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-29 03:35:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2020-10-29 03:35:31,793 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 135 [2020-10-29 03:35:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:31,793 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2020-10-29 03:35:31,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:35:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2020-10-29 03:35:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 03:35:31,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:31,795 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:31,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:35:31,795 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:31,796 INFO L82 PathProgramCache]: Analyzing trace with hash -408548082, now seen corresponding path program 10 times [2020-10-29 03:35:31,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:31,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052859216] [2020-10-29 03:35:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:36,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:35:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:37,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:37,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2020-10-29 03:35:37,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052859216] [2020-10-29 03:35:37,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:37,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:35:37,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858858727] [2020-10-29 03:35:37,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:35:37,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:37,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:35:37,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:37,181 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand 14 states. [2020-10-29 03:35:37,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:37,900 INFO L93 Difference]: Finished difference Result 294 states and 312 transitions. [2020-10-29 03:35:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:35:37,901 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 147 [2020-10-29 03:35:37,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:37,903 INFO L225 Difference]: With dead ends: 294 [2020-10-29 03:35:37,903 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 03:35:37,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 03:35:37,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2020-10-29 03:35:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 03:35:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 172 transitions. [2020-10-29 03:35:37,914 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 172 transitions. Word has length 147 [2020-10-29 03:35:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:37,914 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 172 transitions. [2020-10-29 03:35:37,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:35:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 172 transitions. [2020-10-29 03:35:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 03:35:37,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:37,916 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:37,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:35:37,917 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:37,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:37,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1034089598, now seen corresponding path program 11 times [2020-10-29 03:35:37,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:37,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039807554] [2020-10-29 03:35:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:43,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:43,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 03:35:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-29 03:35:43,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:43,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:35:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:35:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:35:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:43,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:43,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:43,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2020-10-29 03:35:43,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039807554] [2020-10-29 03:35:43,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:43,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:35:43,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937848163] [2020-10-29 03:35:43,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:35:43,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:43,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:35:43,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:43,394 INFO L87 Difference]: Start difference. First operand 165 states and 172 transitions. Second operand 15 states. [2020-10-29 03:35:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:44,215 INFO L93 Difference]: Finished difference Result 316 states and 334 transitions. [2020-10-29 03:35:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:35:44,218 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 159 [2020-10-29 03:35:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:44,219 INFO L225 Difference]: With dead ends: 316 [2020-10-29 03:35:44,220 INFO L226 Difference]: Without dead ends: 183 [2020-10-29 03:35:44,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-29 03:35:44,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2020-10-29 03:35:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-29 03:35:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 184 transitions. [2020-10-29 03:35:44,230 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 184 transitions. Word has length 159 [2020-10-29 03:35:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:44,230 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 184 transitions. [2020-10-29 03:35:44,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:35:44,231 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 184 transitions. [2020-10-29 03:35:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 03:35:44,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:44,233 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:44,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:35:44,233 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1205521398, now seen corresponding path program 12 times [2020-10-29 03:35:44,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:44,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397457413] [2020-10-29 03:35:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:49,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 03:35:49,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 03:35:49,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:49,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:35:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:35:49,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:49,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:49,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:49,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-10-29 03:35:49,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397457413] [2020-10-29 03:35:49,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:49,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:35:49,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457377082] [2020-10-29 03:35:49,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:35:49,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:49,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:35:49,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:49,748 INFO L87 Difference]: Start difference. First operand 177 states and 184 transitions. Second operand 16 states. [2020-10-29 03:35:50,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:50,697 INFO L93 Difference]: Finished difference Result 338 states and 356 transitions. [2020-10-29 03:35:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:35:50,698 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 171 [2020-10-29 03:35:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:50,700 INFO L225 Difference]: With dead ends: 338 [2020-10-29 03:35:50,700 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 03:35:50,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 03:35:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2020-10-29 03:35:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 03:35:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 196 transitions. [2020-10-29 03:35:50,711 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 196 transitions. Word has length 171 [2020-10-29 03:35:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:50,712 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 196 transitions. [2020-10-29 03:35:50,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:35:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 196 transitions. [2020-10-29 03:35:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 03:35:50,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:50,715 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:50,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:35:50,715 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1758441878, now seen corresponding path program 13 times [2020-10-29 03:35:50,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:50,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799352575] [2020-10-29 03:35:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:55,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:55,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-29 03:35:55,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:35:55,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:55,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:35:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:35:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:35:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2020-10-29 03:35:56,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799352575] [2020-10-29 03:35:56,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:56,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:35:56,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609291] [2020-10-29 03:35:56,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:35:56,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:56,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:35:56,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:56,187 INFO L87 Difference]: Start difference. First operand 189 states and 196 transitions. Second operand 17 states. [2020-10-29 03:35:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:57,195 INFO L93 Difference]: Finished difference Result 360 states and 378 transitions. [2020-10-29 03:35:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:35:57,196 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 183 [2020-10-29 03:35:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:57,198 INFO L225 Difference]: With dead ends: 360 [2020-10-29 03:35:57,198 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 03:35:57,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 03:35:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2020-10-29 03:35:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 03:35:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 208 transitions. [2020-10-29 03:35:57,211 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 208 transitions. Word has length 183 [2020-10-29 03:35:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:57,211 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 208 transitions. [2020-10-29 03:35:57,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:35:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 208 transitions. [2020-10-29 03:35:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-29 03:35:57,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:57,214 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:57,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:35:57,214 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1695640866, now seen corresponding path program 14 times [2020-10-29 03:35:57,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:57,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354169208] [2020-10-29 03:35:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 03:36:02,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:36:02,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:36:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:36:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:36:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:02,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:02,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:02,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:02,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2020-10-29 03:36:02,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354169208] [2020-10-29 03:36:02,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:02,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:36:02,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727968425] [2020-10-29 03:36:02,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:36:02,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:02,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:36:02,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:02,721 INFO L87 Difference]: Start difference. First operand 201 states and 208 transitions. Second operand 18 states. [2020-10-29 03:36:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:03,727 INFO L93 Difference]: Finished difference Result 382 states and 400 transitions. [2020-10-29 03:36:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:36:03,728 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 195 [2020-10-29 03:36:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:03,729 INFO L225 Difference]: With dead ends: 382 [2020-10-29 03:36:03,729 INFO L226 Difference]: Without dead ends: 219 [2020-10-29 03:36:03,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-29 03:36:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2020-10-29 03:36:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-29 03:36:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 220 transitions. [2020-10-29 03:36:03,751 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 220 transitions. Word has length 195 [2020-10-29 03:36:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:03,751 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 220 transitions. [2020-10-29 03:36:03,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:36:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 220 transitions. [2020-10-29 03:36:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 03:36:03,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:03,754 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:03,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:36:03,755 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash 153524562, now seen corresponding path program 15 times [2020-10-29 03:36:03,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:03,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510288062] [2020-10-29 03:36:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 03:36:08,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:08,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-29 03:36:08,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:36:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:36:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:36:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:09,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:09,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:09,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:09,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:09,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:09,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2020-10-29 03:36:09,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510288062] [2020-10-29 03:36:09,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:09,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:36:09,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138886338] [2020-10-29 03:36:09,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:36:09,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:09,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:36:09,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:09,428 INFO L87 Difference]: Start difference. First operand 213 states and 220 transitions. Second operand 19 states. [2020-10-29 03:36:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:10,596 INFO L93 Difference]: Finished difference Result 404 states and 422 transitions. [2020-10-29 03:36:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:36:10,597 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 207 [2020-10-29 03:36:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:10,599 INFO L225 Difference]: With dead ends: 404 [2020-10-29 03:36:10,599 INFO L226 Difference]: Without dead ends: 231 [2020-10-29 03:36:10,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-29 03:36:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2020-10-29 03:36:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-29 03:36:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 232 transitions. [2020-10-29 03:36:10,612 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 232 transitions. Word has length 207 [2020-10-29 03:36:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:10,612 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 232 transitions. [2020-10-29 03:36:10,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:36:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 232 transitions. [2020-10-29 03:36:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-29 03:36:10,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:10,614 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:10,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:36:10,615 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1667850694, now seen corresponding path program 16 times [2020-10-29 03:36:10,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:10,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066798365] [2020-10-29 03:36:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:10,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:15,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5172 [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:36:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:16,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:16,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:16,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:16,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2020-10-29 03:36:16,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066798365] [2020-10-29 03:36:16,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:16,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:36:16,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632165525] [2020-10-29 03:36:16,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:36:16,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:36:16,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:16,367 INFO L87 Difference]: Start difference. First operand 225 states and 232 transitions. Second operand 20 states. [2020-10-29 03:36:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:17,551 INFO L93 Difference]: Finished difference Result 426 states and 444 transitions. [2020-10-29 03:36:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:36:17,553 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 219 [2020-10-29 03:36:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:17,555 INFO L225 Difference]: With dead ends: 426 [2020-10-29 03:36:17,555 INFO L226 Difference]: Without dead ends: 243 [2020-10-29 03:36:17,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-29 03:36:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2020-10-29 03:36:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-29 03:36:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 244 transitions. [2020-10-29 03:36:17,567 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 244 transitions. Word has length 219 [2020-10-29 03:36:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:17,567 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 244 transitions. [2020-10-29 03:36:17,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:36:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 244 transitions. [2020-10-29 03:36:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 03:36:17,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:17,569 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:17,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:36:17,570 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:17,570 INFO L82 PathProgramCache]: Analyzing trace with hash -154670022, now seen corresponding path program 17 times [2020-10-29 03:36:17,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:17,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328666877] [2020-10-29 03:36:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 03:36:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-29 03:36:23,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328666877] [2020-10-29 03:36:23,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:23,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:36:23,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973520853] [2020-10-29 03:36:23,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:36:23,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:23,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:36:23,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:23,312 INFO L87 Difference]: Start difference. First operand 237 states and 244 transitions. Second operand 21 states. [2020-10-29 03:36:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:24,533 INFO L93 Difference]: Finished difference Result 448 states and 466 transitions. [2020-10-29 03:36:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:36:24,533 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 231 [2020-10-29 03:36:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:24,535 INFO L225 Difference]: With dead ends: 448 [2020-10-29 03:36:24,535 INFO L226 Difference]: Without dead ends: 255 [2020-10-29 03:36:24,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-29 03:36:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2020-10-29 03:36:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-29 03:36:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 256 transitions. [2020-10-29 03:36:24,553 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 256 transitions. Word has length 231 [2020-10-29 03:36:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:24,554 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 256 transitions. [2020-10-29 03:36:24,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:36:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 256 transitions. [2020-10-29 03:36:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-29 03:36:24,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:24,557 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:24,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:36:24,557 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:24,558 INFO L82 PathProgramCache]: Analyzing trace with hash -606914386, now seen corresponding path program 18 times [2020-10-29 03:36:24,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:24,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52373124] [2020-10-29 03:36:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:24,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:29,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:29,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:36:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2020-10-29 03:36:30,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52373124] [2020-10-29 03:36:30,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:30,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:36:30,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616396700] [2020-10-29 03:36:30,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:36:30,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:36:30,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:30,475 INFO L87 Difference]: Start difference. First operand 249 states and 256 transitions. Second operand 22 states. [2020-10-29 03:36:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:31,784 INFO L93 Difference]: Finished difference Result 470 states and 488 transitions. [2020-10-29 03:36:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:36:31,785 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 243 [2020-10-29 03:36:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:31,788 INFO L225 Difference]: With dead ends: 470 [2020-10-29 03:36:31,788 INFO L226 Difference]: Without dead ends: 267 [2020-10-29 03:36:31,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:31,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-29 03:36:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 261. [2020-10-29 03:36:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 03:36:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 268 transitions. [2020-10-29 03:36:31,800 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 268 transitions. Word has length 243 [2020-10-29 03:36:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:31,801 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 268 transitions. [2020-10-29 03:36:31,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:36:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 268 transitions. [2020-10-29 03:36:31,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 03:36:31,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:31,802 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:31,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:36:31,803 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:31,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:31,803 INFO L82 PathProgramCache]: Analyzing trace with hash -157530334, now seen corresponding path program 19 times [2020-10-29 03:36:31,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:31,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271118324] [2020-10-29 03:36:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:36,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 03:36:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 03:36:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:36,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:36:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 03:36:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:36:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:37,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:37,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:37,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:37,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:37,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:37,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2166 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2020-10-29 03:36:37,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271118324] [2020-10-29 03:36:37,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:37,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:36:37,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805319398] [2020-10-29 03:36:37,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:36:37,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:36:37,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:37,564 INFO L87 Difference]: Start difference. First operand 261 states and 268 transitions. Second operand 23 states. [2020-10-29 03:36:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:38,909 INFO L93 Difference]: Finished difference Result 492 states and 510 transitions. [2020-10-29 03:36:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:36:38,910 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 255 [2020-10-29 03:36:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:38,912 INFO L225 Difference]: With dead ends: 492 [2020-10-29 03:36:38,912 INFO L226 Difference]: Without dead ends: 279 [2020-10-29 03:36:38,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-29 03:36:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2020-10-29 03:36:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-29 03:36:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 280 transitions. [2020-10-29 03:36:38,925 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 280 transitions. Word has length 255 [2020-10-29 03:36:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:38,925 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 280 transitions. [2020-10-29 03:36:38,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:36:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 280 transitions. [2020-10-29 03:36:38,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 03:36:38,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:38,928 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:38,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:36:38,928 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:38,929 INFO L82 PathProgramCache]: Analyzing trace with hash -155969642, now seen corresponding path program 20 times [2020-10-29 03:36:38,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:38,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841666061] [2020-10-29 03:36:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:44,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:44,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 03:36:44,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-29 03:36:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:44,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:36:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 03:36:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:36:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:44,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:44,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:44,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:44,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:44,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 2000 trivial. 0 not checked. [2020-10-29 03:36:44,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841666061] [2020-10-29 03:36:44,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:44,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:36:44,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47587634] [2020-10-29 03:36:44,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:36:44,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:36:44,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:44,856 INFO L87 Difference]: Start difference. First operand 273 states and 280 transitions. Second operand 24 states. [2020-10-29 03:36:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:46,091 INFO L93 Difference]: Finished difference Result 514 states and 532 transitions. [2020-10-29 03:36:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:36:46,092 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 267 [2020-10-29 03:36:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:46,094 INFO L225 Difference]: With dead ends: 514 [2020-10-29 03:36:46,094 INFO L226 Difference]: Without dead ends: 291 [2020-10-29 03:36:46,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:46,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-29 03:36:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 285. [2020-10-29 03:36:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-29 03:36:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 292 transitions. [2020-10-29 03:36:46,107 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 292 transitions. Word has length 267 [2020-10-29 03:36:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:46,107 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 292 transitions. [2020-10-29 03:36:46,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:36:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 292 transitions. [2020-10-29 03:36:46,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-29 03:36:46,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:46,109 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:46,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:36:46,109 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:46,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1462479370, now seen corresponding path program 21 times [2020-10-29 03:36:46,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:46,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936023161] [2020-10-29 03:36:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:51,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:51,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-29 03:36:51,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 03:36:51,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:51,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:36:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:36:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:36:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2020-10-29 03:36:52,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936023161] [2020-10-29 03:36:52,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:52,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:36:52,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618133301] [2020-10-29 03:36:52,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:36:52,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:52,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:36:52,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:52,088 INFO L87 Difference]: Start difference. First operand 285 states and 292 transitions. Second operand 25 states. [2020-10-29 03:36:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:53,442 INFO L93 Difference]: Finished difference Result 536 states and 554 transitions. [2020-10-29 03:36:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:36:53,444 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 279 [2020-10-29 03:36:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:53,447 INFO L225 Difference]: With dead ends: 536 [2020-10-29 03:36:53,447 INFO L226 Difference]: Without dead ends: 303 [2020-10-29 03:36:53,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-29 03:36:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2020-10-29 03:36:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-29 03:36:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 304 transitions. [2020-10-29 03:36:53,460 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 304 transitions. Word has length 279 [2020-10-29 03:36:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:53,460 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 304 transitions. [2020-10-29 03:36:53,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:36:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 304 transitions. [2020-10-29 03:36:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 03:36:53,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:53,462 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:53,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:36:53,463 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:53,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:53,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1586757246, now seen corresponding path program 22 times [2020-10-29 03:36:53,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:53,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753910907] [2020-10-29 03:36:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:36:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:36:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:59,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:59,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:59,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-10-29 03:36:59,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753910907] [2020-10-29 03:36:59,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:59,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:36:59,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025993012] [2020-10-29 03:36:59,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:36:59,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:59,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:36:59,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:36:59,486 INFO L87 Difference]: Start difference. First operand 297 states and 304 transitions. Second operand 26 states. [2020-10-29 03:37:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:00,857 INFO L93 Difference]: Finished difference Result 558 states and 576 transitions. [2020-10-29 03:37:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:37:00,858 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 291 [2020-10-29 03:37:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:00,860 INFO L225 Difference]: With dead ends: 558 [2020-10-29 03:37:00,860 INFO L226 Difference]: Without dead ends: 315 [2020-10-29 03:37:00,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:37:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-29 03:37:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 309. [2020-10-29 03:37:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-29 03:37:00,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 316 transitions. [2020-10-29 03:37:00,874 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 316 transitions. Word has length 291 [2020-10-29 03:37:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:00,874 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 316 transitions. [2020-10-29 03:37:00,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:37:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 316 transitions. [2020-10-29 03:37:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 03:37:00,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:00,876 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:00,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:37:00,877 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash 519967986, now seen corresponding path program 23 times [2020-10-29 03:37:00,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:00,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236582605] [2020-10-29 03:37:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 03:37:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 03:37:05,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:05,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:37:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:37:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:06,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:06,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:06,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:06,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 2645 trivial. 0 not checked. [2020-10-29 03:37:06,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236582605] [2020-10-29 03:37:06,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:06,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:37:06,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560863238] [2020-10-29 03:37:06,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:37:06,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:06,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:37:06,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:06,904 INFO L87 Difference]: Start difference. First operand 309 states and 316 transitions. Second operand 27 states. [2020-10-29 03:37:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:08,487 INFO L93 Difference]: Finished difference Result 580 states and 598 transitions. [2020-10-29 03:37:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:37:08,488 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 303 [2020-10-29 03:37:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:08,490 INFO L225 Difference]: With dead ends: 580 [2020-10-29 03:37:08,490 INFO L226 Difference]: Without dead ends: 327 [2020-10-29 03:37:08,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-29 03:37:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 321. [2020-10-29 03:37:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-29 03:37:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 328 transitions. [2020-10-29 03:37:08,503 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 328 transitions. Word has length 303 [2020-10-29 03:37:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:08,503 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 328 transitions. [2020-10-29 03:37:08,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:37:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 328 transitions. [2020-10-29 03:37:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 03:37:08,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:08,505 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:08,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:37:08,506 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1979379046, now seen corresponding path program 24 times [2020-10-29 03:37:08,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:08,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697583809] [2020-10-29 03:37:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:08,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:13,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:13,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5238 [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:37:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:14,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:14,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:14,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:14,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:14,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3456 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 2880 trivial. 0 not checked. [2020-10-29 03:37:14,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697583809] [2020-10-29 03:37:14,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:14,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:37:14,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89065804] [2020-10-29 03:37:14,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:37:14,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:14,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:37:14,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:14,867 INFO L87 Difference]: Start difference. First operand 321 states and 328 transitions. Second operand 28 states. [2020-10-29 03:37:16,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:16,530 INFO L93 Difference]: Finished difference Result 602 states and 620 transitions. [2020-10-29 03:37:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:37:16,531 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 315 [2020-10-29 03:37:16,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:16,534 INFO L225 Difference]: With dead ends: 602 [2020-10-29 03:37:16,534 INFO L226 Difference]: Without dead ends: 339 [2020-10-29 03:37:16,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:16,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-29 03:37:16,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2020-10-29 03:37:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-29 03:37:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 340 transitions. [2020-10-29 03:37:16,548 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 340 transitions. Word has length 315 [2020-10-29 03:37:16,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:16,548 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 340 transitions. [2020-10-29 03:37:16,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:37:16,548 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 340 transitions. [2020-10-29 03:37:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-29 03:37:16,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:16,551 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:16,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:37:16,551 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:16,551 INFO L82 PathProgramCache]: Analyzing trace with hash 211519450, now seen corresponding path program 25 times [2020-10-29 03:37:16,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:16,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174702140] [2020-10-29 03:37:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:21,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:21,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 03:37:21,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:21,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-29 03:37:21,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:21,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:37:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-29 03:37:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:37:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:22,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:22,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:22,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:22,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:22,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3750 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3125 trivial. 0 not checked. [2020-10-29 03:37:22,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174702140] [2020-10-29 03:37:22,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:22,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:37:22,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67559594] [2020-10-29 03:37:22,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:37:22,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:22,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:37:22,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:22,911 INFO L87 Difference]: Start difference. First operand 333 states and 340 transitions. Second operand 29 states. [2020-10-29 03:37:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:24,654 INFO L93 Difference]: Finished difference Result 624 states and 642 transitions. [2020-10-29 03:37:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:37:24,655 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 327 [2020-10-29 03:37:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:24,657 INFO L225 Difference]: With dead ends: 624 [2020-10-29 03:37:24,658 INFO L226 Difference]: Without dead ends: 351 [2020-10-29 03:37:24,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-29 03:37:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 345. [2020-10-29 03:37:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-29 03:37:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2020-10-29 03:37:24,669 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 327 [2020-10-29 03:37:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:24,670 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2020-10-29 03:37:24,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:37:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2020-10-29 03:37:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 03:37:24,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:24,672 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:24,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:37:24,673 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1467016270, now seen corresponding path program 26 times [2020-10-29 03:37:24,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:24,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333652530] [2020-10-29 03:37:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:29,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5214 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:37:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:31,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:31,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:31,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:31,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4056 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 3380 trivial. 0 not checked. [2020-10-29 03:37:31,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333652530] [2020-10-29 03:37:31,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:31,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:37:31,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172952541] [2020-10-29 03:37:31,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:37:31,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:31,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:37:31,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:31,177 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand 30 states. [2020-10-29 03:37:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:32,950 INFO L93 Difference]: Finished difference Result 646 states and 664 transitions. [2020-10-29 03:37:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:37:32,951 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 339 [2020-10-29 03:37:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:32,953 INFO L225 Difference]: With dead ends: 646 [2020-10-29 03:37:32,953 INFO L226 Difference]: Without dead ends: 363 [2020-10-29 03:37:32,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-29 03:37:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 357. [2020-10-29 03:37:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-29 03:37:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 364 transitions. [2020-10-29 03:37:32,965 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 364 transitions. Word has length 339 [2020-10-29 03:37:32,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:32,966 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 364 transitions. [2020-10-29 03:37:32,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:37:32,966 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 364 transitions. [2020-10-29 03:37:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-29 03:37:32,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:32,968 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:32,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:37:32,969 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:32,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1769209150, now seen corresponding path program 27 times [2020-10-29 03:37:32,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:32,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626280689] [2020-10-29 03:37:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:32,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:38,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:38,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-29 03:37:38,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5746 [2020-10-29 03:37:38,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:38,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:37:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:37:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:37:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:39,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:39,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:39,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:39,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 3645 trivial. 0 not checked. [2020-10-29 03:37:39,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626280689] [2020-10-29 03:37:39,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:39,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:37:39,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755800667] [2020-10-29 03:37:39,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:37:39,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:39,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:37:39,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:39,952 INFO L87 Difference]: Start difference. First operand 357 states and 364 transitions. Second operand 31 states. [2020-10-29 03:37:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:41,824 INFO L93 Difference]: Finished difference Result 668 states and 686 transitions. [2020-10-29 03:37:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:37:41,825 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 351 [2020-10-29 03:37:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:41,828 INFO L225 Difference]: With dead ends: 668 [2020-10-29 03:37:41,829 INFO L226 Difference]: Without dead ends: 375 [2020-10-29 03:37:41,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:41,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-29 03:37:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 369. [2020-10-29 03:37:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-29 03:37:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 376 transitions. [2020-10-29 03:37:41,841 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 376 transitions. Word has length 351 [2020-10-29 03:37:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:41,841 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 376 transitions. [2020-10-29 03:37:41,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:37:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 376 transitions. [2020-10-29 03:37:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-29 03:37:41,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:41,844 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:41,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:37:41,844 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash -713170122, now seen corresponding path program 28 times [2020-10-29 03:37:41,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:41,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805843489] [2020-10-29 03:37:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:47,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-29 03:37:47,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:47,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5750 [2020-10-29 03:37:47,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:47,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:37:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-29 03:37:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:37:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:48,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:48,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:48,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 3920 trivial. 0 not checked. [2020-10-29 03:37:48,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805843489] [2020-10-29 03:37:48,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:48,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:37:48,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350941392] [2020-10-29 03:37:48,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:37:48,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:48,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:37:48,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:48,991 INFO L87 Difference]: Start difference. First operand 369 states and 376 transitions. Second operand 32 states. [2020-10-29 03:37:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:50,981 INFO L93 Difference]: Finished difference Result 690 states and 708 transitions. [2020-10-29 03:37:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:37:50,982 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 363 [2020-10-29 03:37:50,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:50,985 INFO L225 Difference]: With dead ends: 690 [2020-10-29 03:37:50,985 INFO L226 Difference]: Without dead ends: 387 [2020-10-29 03:37:50,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-29 03:37:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2020-10-29 03:37:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-29 03:37:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 388 transitions. [2020-10-29 03:37:50,996 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 388 transitions. Word has length 363 [2020-10-29 03:37:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:50,997 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 388 transitions. [2020-10-29 03:37:50,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:37:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 388 transitions. [2020-10-29 03:37:50,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-29 03:37:51,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:51,000 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:37:51,000 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:51,002 INFO L82 PathProgramCache]: Analyzing trace with hash -346585686, now seen corresponding path program 29 times [2020-10-29 03:37:51,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:51,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939465852] [2020-10-29 03:37:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-29 03:37:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5244 [2020-10-29 03:37:56,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:56,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:37:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 03:37:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:37:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5046 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 4205 trivial. 0 not checked. [2020-10-29 03:37:57,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939465852] [2020-10-29 03:37:57,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:57,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:37:57,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224304310] [2020-10-29 03:37:57,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:37:57,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:57,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:37:57,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:37:57,727 INFO L87 Difference]: Start difference. First operand 381 states and 388 transitions. Second operand 33 states. [2020-10-29 03:37:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:59,468 INFO L93 Difference]: Finished difference Result 712 states and 730 transitions. [2020-10-29 03:37:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:37:59,469 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 375 [2020-10-29 03:37:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:59,472 INFO L225 Difference]: With dead ends: 712 [2020-10-29 03:37:59,472 INFO L226 Difference]: Without dead ends: 399 [2020-10-29 03:37:59,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:37:59,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-29 03:37:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 393. [2020-10-29 03:37:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-29 03:37:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 400 transitions. [2020-10-29 03:37:59,483 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 400 transitions. Word has length 375 [2020-10-29 03:37:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:59,484 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 400 transitions. [2020-10-29 03:37:59,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:37:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 400 transitions. [2020-10-29 03:37:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-29 03:37:59,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:59,487 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:59,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:37:59,487 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:59,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2057955870, now seen corresponding path program 30 times [2020-10-29 03:37:59,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:59,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878611441] [2020-10-29 03:37:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:04,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:04,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-29 03:38:04,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5283 [2020-10-29 03:38:04,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:04,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:38:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:38:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:38:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:06,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:06,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:06,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:06,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:06,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:06,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5400 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 4500 trivial. 0 not checked. [2020-10-29 03:38:06,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878611441] [2020-10-29 03:38:06,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:06,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:38:06,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998210041] [2020-10-29 03:38:06,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:38:06,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:06,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:38:06,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:06,281 INFO L87 Difference]: Start difference. First operand 393 states and 400 transitions. Second operand 34 states. [2020-10-29 03:38:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:08,480 INFO L93 Difference]: Finished difference Result 734 states and 752 transitions. [2020-10-29 03:38:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:38:08,481 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 387 [2020-10-29 03:38:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:08,484 INFO L225 Difference]: With dead ends: 734 [2020-10-29 03:38:08,484 INFO L226 Difference]: Without dead ends: 411 [2020-10-29 03:38:08,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-29 03:38:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 405. [2020-10-29 03:38:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-29 03:38:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 412 transitions. [2020-10-29 03:38:08,497 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 412 transitions. Word has length 387 [2020-10-29 03:38:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:08,497 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 412 transitions. [2020-10-29 03:38:08,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:38:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 412 transitions. [2020-10-29 03:38:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 03:38:08,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:08,501 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:08,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:38:08,501 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash -242872174, now seen corresponding path program 31 times [2020-10-29 03:38:08,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:08,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016375716] [2020-10-29 03:38:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:08,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:38:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:15,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:15,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:15,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:15,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0