/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/eca-rers2012/Problem11_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:05:16,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:05:16,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:05:16,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:05:16,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:05:16,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:05:16,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:05:16,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:05:16,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:05:16,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:05:16,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:05:16,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:05:16,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:05:16,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:05:16,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:05:16,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:05:16,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:05:16,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:05:16,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:05:16,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:05:16,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:05:16,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:05:16,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:05:16,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:05:16,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:05:16,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:05:16,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:05:16,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:05:16,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:05:16,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:05:16,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:05:16,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:05:16,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:05:16,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:05:16,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:05:16,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:05:16,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:05:16,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:05:16,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:05:16,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:05:16,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:05:16,464 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 [2020-10-28 12:05:16,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:05:16,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:05:16,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:05:16,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:05:16,498 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:05:16,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:05:16,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:05:16,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:05:16,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:05:16,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:05:16,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:05:16,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:05:16,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:05:16,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:05:16,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:05:16,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:05:16,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:05:16,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:05:16,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:05:16,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:05:16,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:05:16,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:05:16,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:05:16,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:05:16,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:05:16,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:05:16,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:05:16,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:05:16,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:05:16,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:05:16,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:05:17,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:05:17,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:05:17,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:05:17,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:05:17,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22.c [2020-10-28 12:05:17,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4b867d78/e3dad14239c54605889ac2886e0642bc/FLAG7c22e4997 [2020-10-28 12:05:18,020 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:05:18,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label22.c [2020-10-28 12:05:18,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4b867d78/e3dad14239c54605889ac2886e0642bc/FLAG7c22e4997 [2020-10-28 12:05:18,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4b867d78/e3dad14239c54605889ac2886e0642bc [2020-10-28 12:05:18,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:05:18,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:05:18,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:05:18,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:05:18,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:05:18,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:18" (1/1) ... [2020-10-28 12:05:18,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5166461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:18, skipping insertion in model container [2020-10-28 12:05:18,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:18" (1/1) ... [2020-10-28 12:05:18,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:05:18,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:05:18,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:05:18,892 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:05:19,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:05:19,132 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:05:19,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19 WrapperNode [2020-10-28 12:05:19,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:05:19,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:05:19,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:05:19,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:05:19,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (1/1) ... [2020-10-28 12:05:19,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (1/1) ... [2020-10-28 12:05:19,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (1/1) ... [2020-10-28 12:05:19,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (1/1) ... [2020-10-28 12:05:19,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (1/1) ... [2020-10-28 12:05:19,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (1/1) ... [2020-10-28 12:05:19,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (1/1) ... [2020-10-28 12:05:19,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:05:19,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:05:19,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:05:19,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:05:19,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (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 [2020-10-28 12:05:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:05:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:05:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:05:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:05:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:05:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:05:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:05:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:05:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:05:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:05:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:05:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:05:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:05:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:05:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:05:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:05:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:05:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:05:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:05:21,544 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:05:21,545 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:05:21,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:21 BoogieIcfgContainer [2020-10-28 12:05:21,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:05:21,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:05:21,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:05:21,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:05:21,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:05:18" (1/3) ... [2020-10-28 12:05:21,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774dd014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:21, skipping insertion in model container [2020-10-28 12:05:21,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:19" (2/3) ... [2020-10-28 12:05:21,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774dd014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:21, skipping insertion in model container [2020-10-28 12:05:21,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:21" (3/3) ... [2020-10-28 12:05:21,559 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label22.c [2020-10-28 12:05:21,574 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:05:21,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:05:21,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:05:21,634 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:05:21,634 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:05:21,635 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:05:21,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:05:21,635 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:05:21,635 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:05:21,635 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:05:21,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:05:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:05:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 12:05:21,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:21,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:21,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash -402515048, now seen corresponding path program 1 times [2020-10-28 12:05:21,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:21,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200962196] [2020-10-28 12:05:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:22,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 12:05:22,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-28 12:05:22,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:22,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:05:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:05:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 12:05:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:05:22,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:23,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:23,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:05:23,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:23,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:23,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:05:23,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200962196] [2020-10-28 12:05:23,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:05:23,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:05:23,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28801822] [2020-10-28 12:05:23,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:05:23,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:23,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:05:23,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:05:23,127 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:05:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:26,331 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-28 12:05:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:26,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 12:05:26,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:26,352 INFO L225 Difference]: With dead ends: 793 [2020-10-28 12:05:26,352 INFO L226 Difference]: Without dead ends: 432 [2020-10-28 12:05:26,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-28 12:05:26,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-28 12:05:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-28 12:05:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-28 12:05:26,466 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 62 [2020-10-28 12:05:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:26,467 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-28 12:05:26,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:05:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-28 12:05:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 12:05:26,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:26,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:26,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:05:26,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:26,476 INFO L82 PathProgramCache]: Analyzing trace with hash -39349676, now seen corresponding path program 1 times [2020-10-28 12:05:26,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:26,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959211035] [2020-10-28 12:05:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:29,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:05:29,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2643 [2020-10-28 12:05:29,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:29,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:29,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:05:29,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:05:29,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:05:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:29,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:29,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:29,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:05:29,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:29,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:29,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:05:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:29,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:29,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:05:29,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:05:29,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:29,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:05:29,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:05:29,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959211035] [2020-10-28 12:05:29,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:05:29,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:05:29,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490721191] [2020-10-28 12:05:29,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:29,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:29,772 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-28 12:05:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:33,546 INFO L93 Difference]: Finished difference Result 1277 states and 1862 transitions. [2020-10-28 12:05:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:05:33,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 12:05:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:33,555 INFO L225 Difference]: With dead ends: 1277 [2020-10-28 12:05:33,556 INFO L226 Difference]: Without dead ends: 857 [2020-10-28 12:05:33,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-28 12:05:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 821. [2020-10-28 12:05:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-28 12:05:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1098 transitions. [2020-10-28 12:05:33,659 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1098 transitions. Word has length 134 [2020-10-28 12:05:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:33,660 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1098 transitions. [2020-10-28 12:05:33,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1098 transitions. [2020-10-28 12:05:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 12:05:33,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:33,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:33,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:05:33,671 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:33,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:33,672 INFO L82 PathProgramCache]: Analyzing trace with hash 373397572, now seen corresponding path program 1 times [2020-10-28 12:05:33,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:33,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880112690] [2020-10-28 12:05:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:35,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:35,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 12:05:35,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:35,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-10-28 12:05:35,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:35,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:05:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:05:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:05:35,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:35,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:35,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:35,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:35,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:35,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:35,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:05:35,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:35,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:35,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:35,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:35,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:35,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:35,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:05:35,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 12:05:35,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:35,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:05:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:05:36,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880112690] [2020-10-28 12:05:36,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:05:36,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:05:36,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408236637] [2020-10-28 12:05:36,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:36,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:36,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:36,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:36,073 INFO L87 Difference]: Start difference. First operand 821 states and 1098 transitions. Second operand 7 states. [2020-10-28 12:05:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:39,247 INFO L93 Difference]: Finished difference Result 2067 states and 2725 transitions. [2020-10-28 12:05:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:39,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-28 12:05:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:39,264 INFO L225 Difference]: With dead ends: 2067 [2020-10-28 12:05:39,264 INFO L226 Difference]: Without dead ends: 1252 [2020-10-28 12:05:39,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2020-10-28 12:05:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1215. [2020-10-28 12:05:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-28 12:05:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1531 transitions. [2020-10-28 12:05:39,341 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1531 transitions. Word has length 142 [2020-10-28 12:05:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:39,342 INFO L481 AbstractCegarLoop]: Abstraction has 1215 states and 1531 transitions. [2020-10-28 12:05:39,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1531 transitions. [2020-10-28 12:05:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 12:05:39,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:39,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:39,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:05:39,347 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:39,348 INFO L82 PathProgramCache]: Analyzing trace with hash 804484043, now seen corresponding path program 1 times [2020-10-28 12:05:39,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:39,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108550845] [2020-10-28 12:05:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 12:05:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-28 12:05:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:39,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:05:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 12:05:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:40,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:05:40,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:40,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:05:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:05:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:05:40,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108550845] [2020-10-28 12:05:40,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:40,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:40,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393955054] [2020-10-28 12:05:40,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:40,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:40,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:40,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:40,402 INFO L87 Difference]: Start difference. First operand 1215 states and 1531 transitions. Second operand 5 states. [2020-10-28 12:05:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:43,429 INFO L93 Difference]: Finished difference Result 2073 states and 2816 transitions. [2020-10-28 12:05:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:43,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-28 12:05:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:43,444 INFO L225 Difference]: With dead ends: 2073 [2020-10-28 12:05:43,444 INFO L226 Difference]: Without dead ends: 1638 [2020-10-28 12:05:43,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-10-28 12:05:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1629. [2020-10-28 12:05:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-10-28 12:05:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2091 transitions. [2020-10-28 12:05:43,530 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2091 transitions. Word has length 193 [2020-10-28 12:05:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:43,533 INFO L481 AbstractCegarLoop]: Abstraction has 1629 states and 2091 transitions. [2020-10-28 12:05:43,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2091 transitions. [2020-10-28 12:05:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 12:05:43,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:43,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:43,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:05:43,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:43,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1120434134, now seen corresponding path program 1 times [2020-10-28 12:05:43,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:43,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994254688] [2020-10-28 12:05:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 12:05:46,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2500 [2020-10-28 12:05:46,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:05:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:05:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:05:46,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:46,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:05:46,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:05:46,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:05:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:46,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:05:46,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:05:46,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:05:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:05:46,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994254688] [2020-10-28 12:05:46,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:46,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:46,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113000593] [2020-10-28 12:05:46,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:46,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:46,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:46,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:46,868 INFO L87 Difference]: Start difference. First operand 1629 states and 2091 transitions. Second operand 7 states. [2020-10-28 12:05:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:49,817 INFO L93 Difference]: Finished difference Result 3479 states and 4694 transitions. [2020-10-28 12:05:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:05:49,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-28 12:05:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:49,832 INFO L225 Difference]: With dead ends: 3479 [2020-10-28 12:05:49,832 INFO L226 Difference]: Without dead ends: 2234 [2020-10-28 12:05:49,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-28 12:05:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2217. [2020-10-28 12:05:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-28 12:05:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2962 transitions. [2020-10-28 12:05:49,910 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2962 transitions. Word has length 250 [2020-10-28 12:05:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:49,911 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 2962 transitions. [2020-10-28 12:05:49,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2962 transitions. [2020-10-28 12:05:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 12:05:49,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:49,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:49,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:05:49,917 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:49,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:49,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1257565854, now seen corresponding path program 1 times [2020-10-28 12:05:49,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:49,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695483018] [2020-10-28 12:05:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:50,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 12:05:53,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3166 [2020-10-28 12:05:53,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:05:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:05:53,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:53,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:53,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:05:53,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:05:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:53,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:05:53,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:05:53,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:53,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:53,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:05:53,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:05:53,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695483018] [2020-10-28 12:05:53,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:53,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:53,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377653619] [2020-10-28 12:05:53,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:53,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:53,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:53,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:53,955 INFO L87 Difference]: Start difference. First operand 2217 states and 2962 transitions. Second operand 7 states. [2020-10-28 12:05:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:57,836 INFO L93 Difference]: Finished difference Result 4544 states and 6502 transitions. [2020-10-28 12:05:57,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:57,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-28 12:05:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:57,856 INFO L225 Difference]: With dead ends: 4544 [2020-10-28 12:05:57,856 INFO L226 Difference]: Without dead ends: 2711 [2020-10-28 12:05:57,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2020-10-28 12:05:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2625. [2020-10-28 12:05:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2625 states. [2020-10-28 12:05:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 3441 transitions. [2020-10-28 12:05:57,959 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 3441 transitions. Word has length 251 [2020-10-28 12:05:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:57,960 INFO L481 AbstractCegarLoop]: Abstraction has 2625 states and 3441 transitions. [2020-10-28 12:05:57,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 3441 transitions. [2020-10-28 12:05:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 12:05:57,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:57,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:57,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:05:57,967 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:57,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:57,967 INFO L82 PathProgramCache]: Analyzing trace with hash -520974158, now seen corresponding path program 1 times [2020-10-28 12:05:57,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:57,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434717099] [2020-10-28 12:05:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:00,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:00,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 12:06:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2828 [2020-10-28 12:06:00,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:00,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:06:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:01,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:01,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:01,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:01,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:01,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:01,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:01,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:01,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:06:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:01,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:06:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 12:06:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:01,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:06:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:01,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434717099] [2020-10-28 12:06:01,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:01,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:01,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33430368] [2020-10-28 12:06:01,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:01,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:01,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:01,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:01,687 INFO L87 Difference]: Start difference. First operand 2625 states and 3441 transitions. Second operand 7 states. [2020-10-28 12:06:05,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:05,532 INFO L93 Difference]: Finished difference Result 6265 states and 8537 transitions. [2020-10-28 12:06:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:05,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-28 12:06:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:05,556 INFO L225 Difference]: With dead ends: 6265 [2020-10-28 12:06:05,556 INFO L226 Difference]: Without dead ends: 4024 [2020-10-28 12:06:05,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-28 12:06:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3983. [2020-10-28 12:06:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3983 states. [2020-10-28 12:06:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5134 transitions. [2020-10-28 12:06:05,691 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5134 transitions. Word has length 261 [2020-10-28 12:06:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:05,692 INFO L481 AbstractCegarLoop]: Abstraction has 3983 states and 5134 transitions. [2020-10-28 12:06:05,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5134 transitions. [2020-10-28 12:06:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-28 12:06:05,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:05,699 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:05,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:06:05,699 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:05,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1189601262, now seen corresponding path program 1 times [2020-10-28 12:06:05,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:05,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771682361] [2020-10-28 12:06:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:06,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-28 12:06:06,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:06,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-28 12:06:06,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:06,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:06:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 12:06:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:06,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:06,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:06,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:06,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:06,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:06:06,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:06,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:07,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:06:07,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:06:07,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:07,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:06:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:06:07,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771682361] [2020-10-28 12:06:07,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:07,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:07,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752881669] [2020-10-28 12:06:07,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:07,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:07,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:07,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:07,135 INFO L87 Difference]: Start difference. First operand 3983 states and 5134 transitions. Second operand 5 states. [2020-10-28 12:06:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:10,215 INFO L93 Difference]: Finished difference Result 7211 states and 9586 transitions. [2020-10-28 12:06:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:10,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-28 12:06:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:10,243 INFO L225 Difference]: With dead ends: 7211 [2020-10-28 12:06:10,243 INFO L226 Difference]: Without dead ends: 4974 [2020-10-28 12:06:10,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4974 states. [2020-10-28 12:06:10,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4974 to 4934. [2020-10-28 12:06:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4934 states. [2020-10-28 12:06:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 6458 transitions. [2020-10-28 12:06:10,414 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 6458 transitions. Word has length 262 [2020-10-28 12:06:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:10,415 INFO L481 AbstractCegarLoop]: Abstraction has 4934 states and 6458 transitions. [2020-10-28 12:06:10,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 6458 transitions. [2020-10-28 12:06:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 12:06:10,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:10,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:10,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:06:10,425 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:10,426 INFO L82 PathProgramCache]: Analyzing trace with hash 94435206, now seen corresponding path program 1 times [2020-10-28 12:06:10,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:10,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437801121] [2020-10-28 12:06:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:13,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:13,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 12:06:13,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2904 [2020-10-28 12:06:13,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:13,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:06:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:06:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:13,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:13,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:13,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:13,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:13,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:13,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:13,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:13,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:13,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:13,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:06:13,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:13,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:06:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:13,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:14,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:14,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:14,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:14,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 12:06:14,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:14,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 129 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:06:14,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437801121] [2020-10-28 12:06:14,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:14,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:14,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132677326] [2020-10-28 12:06:14,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:14,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:14,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:14,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:14,283 INFO L87 Difference]: Start difference. First operand 4934 states and 6458 transitions. Second operand 7 states. [2020-10-28 12:06:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:18,500 INFO L93 Difference]: Finished difference Result 12125 states and 17190 transitions. [2020-10-28 12:06:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:18,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-28 12:06:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:18,546 INFO L225 Difference]: With dead ends: 12125 [2020-10-28 12:06:18,546 INFO L226 Difference]: Without dead ends: 7575 [2020-10-28 12:06:18,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2020-10-28 12:06:18,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 7287. [2020-10-28 12:06:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7287 states. [2020-10-28 12:06:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7287 states to 7287 states and 9365 transitions. [2020-10-28 12:06:18,810 INFO L78 Accepts]: Start accepts. Automaton has 7287 states and 9365 transitions. Word has length 268 [2020-10-28 12:06:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:18,811 INFO L481 AbstractCegarLoop]: Abstraction has 7287 states and 9365 transitions. [2020-10-28 12:06:18,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7287 states and 9365 transitions. [2020-10-28 12:06:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:06:18,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:18,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:18,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:06:18,820 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:18,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1197277319, now seen corresponding path program 1 times [2020-10-28 12:06:18,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:18,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301643588] [2020-10-28 12:06:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:23,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:23,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:06:23,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:06:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 12:06:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:23,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:06:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:24,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:24,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:24,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:24,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:24,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:24,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:24,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 12:06:24,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:24,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:06:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:24,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:24,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:24,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:06:24,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:24,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:06:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 12:06:24,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301643588] [2020-10-28 12:06:24,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:24,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:24,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521422084] [2020-10-28 12:06:24,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:24,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:24,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:24,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:24,498 INFO L87 Difference]: Start difference. First operand 7287 states and 9365 transitions. Second operand 5 states. [2020-10-28 12:06:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:27,036 INFO L93 Difference]: Finished difference Result 14148 states and 18292 transitions. [2020-10-28 12:06:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:27,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-28 12:06:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:27,062 INFO L225 Difference]: With dead ends: 14148 [2020-10-28 12:06:27,062 INFO L226 Difference]: Without dead ends: 7245 [2020-10-28 12:06:27,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2020-10-28 12:06:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 7051. [2020-10-28 12:06:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7051 states. [2020-10-28 12:06:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 8603 transitions. [2020-10-28 12:06:27,275 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 8603 transitions. Word has length 273 [2020-10-28 12:06:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:27,276 INFO L481 AbstractCegarLoop]: Abstraction has 7051 states and 8603 transitions. [2020-10-28 12:06:27,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 8603 transitions. [2020-10-28 12:06:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-28 12:06:27,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:27,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:27,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:06:27,343 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:27,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2023813119, now seen corresponding path program 1 times [2020-10-28 12:06:27,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:27,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634919526] [2020-10-28 12:06:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-28 12:06:28,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:28,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-28 12:06:28,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:06:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:06:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:28,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:28,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:28,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:28,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:28,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:06:28,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:06:28,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:06:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:06:28,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:06:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:29,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634919526] [2020-10-28 12:06:29,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:29,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:29,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775464977] [2020-10-28 12:06:29,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:29,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:29,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:29,207 INFO L87 Difference]: Start difference. First operand 7051 states and 8603 transitions. Second operand 7 states. [2020-10-28 12:06:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:33,009 INFO L93 Difference]: Finished difference Result 13999 states and 17381 transitions. [2020-10-28 12:06:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:33,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-28 12:06:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:33,043 INFO L225 Difference]: With dead ends: 13999 [2020-10-28 12:06:33,043 INFO L226 Difference]: Without dead ends: 7332 [2020-10-28 12:06:33,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:33,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2020-10-28 12:06:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 7273. [2020-10-28 12:06:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7273 states. [2020-10-28 12:06:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 8709 transitions. [2020-10-28 12:06:33,233 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 8709 transitions. Word has length 298 [2020-10-28 12:06:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:33,234 INFO L481 AbstractCegarLoop]: Abstraction has 7273 states and 8709 transitions. [2020-10-28 12:06:33,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 8709 transitions. [2020-10-28 12:06:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-28 12:06:33,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:33,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:33,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:06:33,245 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:33,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1370801804, now seen corresponding path program 1 times [2020-10-28 12:06:33,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:33,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717677983] [2020-10-28 12:06:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:35,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:35,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 12:06:35,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1984 [2020-10-28 12:06:35,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:35,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:06:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:06:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:35,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:35,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:35,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:35,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:35,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:35,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:35,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:06:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:06:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:06:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:35,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:36,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717677983] [2020-10-28 12:06:36,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:36,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:36,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083201006] [2020-10-28 12:06:36,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:36,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:36,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:36,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:36,065 INFO L87 Difference]: Start difference. First operand 7273 states and 8709 transitions. Second operand 7 states. [2020-10-28 12:06:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:40,755 INFO L93 Difference]: Finished difference Result 13790 states and 16602 transitions. [2020-10-28 12:06:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:40,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-28 12:06:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:40,797 INFO L225 Difference]: With dead ends: 13790 [2020-10-28 12:06:40,798 INFO L226 Difference]: Without dead ends: 9213 [2020-10-28 12:06:40,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9213 states. [2020-10-28 12:06:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9213 to 8048. [2020-10-28 12:06:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8048 states. [2020-10-28 12:06:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8048 states to 8048 states and 9605 transitions. [2020-10-28 12:06:41,003 INFO L78 Accepts]: Start accepts. Automaton has 8048 states and 9605 transitions. Word has length 303 [2020-10-28 12:06:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:41,004 INFO L481 AbstractCegarLoop]: Abstraction has 8048 states and 9605 transitions. [2020-10-28 12:06:41,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8048 states and 9605 transitions. [2020-10-28 12:06:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-28 12:06:41,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:41,016 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:41,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:06:41,016 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash 261255560, now seen corresponding path program 1 times [2020-10-28 12:06:41,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:41,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680739983] [2020-10-28 12:06:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:41,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-28 12:06:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-28 12:06:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:42,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-28 12:06:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 12:06:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:42,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:42,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:42,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:42,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 12:06:42,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:42,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:42,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:42,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:42,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:06:42,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:42,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:42,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:42,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:06:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-28 12:06:42,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680739983] [2020-10-28 12:06:42,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:42,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:42,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938439263] [2020-10-28 12:06:42,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:42,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:42,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:42,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:42,772 INFO L87 Difference]: Start difference. First operand 8048 states and 9605 transitions. Second operand 5 states. [2020-10-28 12:06:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:45,710 INFO L93 Difference]: Finished difference Result 16295 states and 19461 transitions. [2020-10-28 12:06:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:45,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-28 12:06:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:45,737 INFO L225 Difference]: With dead ends: 16295 [2020-10-28 12:06:45,737 INFO L226 Difference]: Without dead ends: 8441 [2020-10-28 12:06:45,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2020-10-28 12:06:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 8046. [2020-10-28 12:06:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8046 states. [2020-10-28 12:06:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8046 states to 8046 states and 9462 transitions. [2020-10-28 12:06:45,943 INFO L78 Accepts]: Start accepts. Automaton has 8046 states and 9462 transitions. Word has length 308 [2020-10-28 12:06:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:45,944 INFO L481 AbstractCegarLoop]: Abstraction has 8046 states and 9462 transitions. [2020-10-28 12:06:45,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8046 states and 9462 transitions. [2020-10-28 12:06:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-28 12:06:46,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:46,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:46,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:06:46,074 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:46,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1995531738, now seen corresponding path program 1 times [2020-10-28 12:06:46,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:46,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905906018] [2020-10-28 12:06:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:48,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-28 12:06:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2488 [2020-10-28 12:06:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:48,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-28 12:06:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 12:06:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:48,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:06:48,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:48,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:48,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:48,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:06:48,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:06:48,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:48,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:06:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:06:49,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 12:06:49,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:49,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:06:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 12:06:49,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905906018] [2020-10-28 12:06:49,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:49,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:49,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407839787] [2020-10-28 12:06:49,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:49,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:49,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:49,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:49,353 INFO L87 Difference]: Start difference. First operand 8046 states and 9462 transitions. Second operand 5 states. [2020-10-28 12:06:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:52,155 INFO L93 Difference]: Finished difference Result 9201 states and 10888 transitions. [2020-10-28 12:06:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:52,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 375 [2020-10-28 12:06:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:52,183 INFO L225 Difference]: With dead ends: 9201 [2020-10-28 12:06:52,183 INFO L226 Difference]: Without dead ends: 9198 [2020-10-28 12:06:52,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:52,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9198 states. [2020-10-28 12:06:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9198 to 8616. [2020-10-28 12:06:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8616 states. [2020-10-28 12:06:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 10209 transitions. [2020-10-28 12:06:52,393 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 10209 transitions. Word has length 375 [2020-10-28 12:06:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:52,394 INFO L481 AbstractCegarLoop]: Abstraction has 8616 states and 10209 transitions. [2020-10-28 12:06:52,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 10209 transitions. [2020-10-28 12:06:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-28 12:06:52,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:52,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:52,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:06:52,412 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:52,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2069465167, now seen corresponding path program 1 times [2020-10-28 12:06:52,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:52,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912840973] [2020-10-28 12:06:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:06:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:06:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:54,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:54,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:54,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:06:54,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:54,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:06:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:06:54,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:06:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:06:54,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:06:54,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:06:54,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:06:55,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912840973] [2020-10-28 12:06:55,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:55,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:55,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834315064] [2020-10-28 12:06:55,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:55,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:55,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:55,213 INFO L87 Difference]: Start difference. First operand 8616 states and 10209 transitions. Second operand 7 states. [2020-10-28 12:06:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:58,817 INFO L93 Difference]: Finished difference Result 17667 states and 20934 transitions. [2020-10-28 12:06:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:58,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 378 [2020-10-28 12:06:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:58,851 INFO L225 Difference]: With dead ends: 17667 [2020-10-28 12:06:58,851 INFO L226 Difference]: Without dead ends: 9435 [2020-10-28 12:06:58,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9435 states. [2020-10-28 12:06:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9435 to 9416. [2020-10-28 12:06:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9416 states. [2020-10-28 12:06:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9416 states to 9416 states and 10989 transitions. [2020-10-28 12:06:59,084 INFO L78 Accepts]: Start accepts. Automaton has 9416 states and 10989 transitions. Word has length 378 [2020-10-28 12:06:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:59,085 INFO L481 AbstractCegarLoop]: Abstraction has 9416 states and 10989 transitions. [2020-10-28 12:06:59,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:59,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9416 states and 10989 transitions. [2020-10-28 12:06:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-28 12:06:59,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:59,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 12:06:59,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:06:59,106 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:59,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1496045949, now seen corresponding path program 1 times [2020-10-28 12:06:59,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:59,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138853115] [2020-10-28 12:06:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:59,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-28 12:07:01,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:01,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1746 [2020-10-28 12:07:01,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:07:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:07:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:01,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:07:01,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:07:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:07:01,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:07:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:07:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:07:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:07:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:07:01,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138853115] [2020-10-28 12:07:01,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:01,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:01,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127348200] [2020-10-28 12:07:01,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:01,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:01,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:01,866 INFO L87 Difference]: Start difference. First operand 9416 states and 10989 transitions. Second operand 7 states. [2020-10-28 12:07:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:05,942 INFO L93 Difference]: Finished difference Result 16164 states and 19041 transitions. [2020-10-28 12:07:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:07:05,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-28 12:07:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:05,968 INFO L225 Difference]: With dead ends: 16164 [2020-10-28 12:07:05,968 INFO L226 Difference]: Without dead ends: 9828 [2020-10-28 12:07:05,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9828 states. [2020-10-28 12:07:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9828 to 9802. [2020-10-28 12:07:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9802 states. [2020-10-28 12:07:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9802 states to 9802 states and 11410 transitions. [2020-10-28 12:07:06,181 INFO L78 Accepts]: Start accepts. Automaton has 9802 states and 11410 transitions. Word has length 413 [2020-10-28 12:07:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:06,182 INFO L481 AbstractCegarLoop]: Abstraction has 9802 states and 11410 transitions. [2020-10-28 12:07:06,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9802 states and 11410 transitions. [2020-10-28 12:07:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-28 12:07:06,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:06,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:06,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:07:06,212 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:06,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1849483775, now seen corresponding path program 1 times [2020-10-28 12:07:06,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:06,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171332557] [2020-10-28 12:07:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:07:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 12:07:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:07,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:07,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:07,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:07,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:07,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:07,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:07,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:07:07,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:07,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:07,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:07,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:07,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:07,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:07:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:07:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:08,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:07:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:07:08,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171332557] [2020-10-28 12:07:08,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:08,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:08,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317473829] [2020-10-28 12:07:08,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:08,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:08,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:08,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:08,609 INFO L87 Difference]: Start difference. First operand 9802 states and 11410 transitions. Second operand 7 states. [2020-10-28 12:07:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:13,099 INFO L93 Difference]: Finished difference Result 17700 states and 20930 transitions. [2020-10-28 12:07:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:07:13,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 453 [2020-10-28 12:07:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:13,132 INFO L225 Difference]: With dead ends: 17700 [2020-10-28 12:07:13,132 INFO L226 Difference]: Without dead ends: 10978 [2020-10-28 12:07:13,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10978 states. [2020-10-28 12:07:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10978 to 10952. [2020-10-28 12:07:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10952 states. [2020-10-28 12:07:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10952 states to 10952 states and 12728 transitions. [2020-10-28 12:07:13,392 INFO L78 Accepts]: Start accepts. Automaton has 10952 states and 12728 transitions. Word has length 453 [2020-10-28 12:07:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:13,394 INFO L481 AbstractCegarLoop]: Abstraction has 10952 states and 12728 transitions. [2020-10-28 12:07:13,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10952 states and 12728 transitions. [2020-10-28 12:07:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-28 12:07:13,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:13,422 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:13,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:07:13,422 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:13,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1360434661, now seen corresponding path program 1 times [2020-10-28 12:07:13,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:13,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870134314] [2020-10-28 12:07:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:16,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:18,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:18,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-28 12:07:18,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:07:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 12:07:18,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:18,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-28 12:07:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:07:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:18,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:18,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:18,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:18,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:18,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:18,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:18,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:07:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:18,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:18,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:18,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:18,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:07:18,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:18,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:07:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:07:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-28 12:07:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:19,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:07:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 510 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-28 12:07:19,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870134314] [2020-10-28 12:07:19,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:19,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:19,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662568185] [2020-10-28 12:07:19,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:19,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:19,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:19,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:19,356 INFO L87 Difference]: Start difference. First operand 10952 states and 12728 transitions. Second operand 7 states. [2020-10-28 12:07:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:23,396 INFO L93 Difference]: Finished difference Result 21223 states and 25541 transitions. [2020-10-28 12:07:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:23,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 498 [2020-10-28 12:07:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:23,436 INFO L225 Difference]: With dead ends: 21223 [2020-10-28 12:07:23,436 INFO L226 Difference]: Without dead ends: 12585 [2020-10-28 12:07:23,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12585 states. [2020-10-28 12:07:23,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12585 to 12267. [2020-10-28 12:07:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12267 states. [2020-10-28 12:07:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12267 states to 12267 states and 14318 transitions. [2020-10-28 12:07:23,885 INFO L78 Accepts]: Start accepts. Automaton has 12267 states and 14318 transitions. Word has length 498 [2020-10-28 12:07:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:23,886 INFO L481 AbstractCegarLoop]: Abstraction has 12267 states and 14318 transitions. [2020-10-28 12:07:23,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 12267 states and 14318 transitions. [2020-10-28 12:07:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-28 12:07:23,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:23,928 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:23,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:07:23,928 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:23,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1688579130, now seen corresponding path program 1 times [2020-10-28 12:07:23,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:23,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478286099] [2020-10-28 12:07:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:24,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:24,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-28 12:07:24,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-28 12:07:24,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:24,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:07:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:07:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:25,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:25,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:25,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:07:25,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:25,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:25,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:25,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:25,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:07:25,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:25,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:25,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:25,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:25,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:25,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:25,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:07:25,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:07:25,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:07:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:25,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:07:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:25,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:25,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:07:25,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:25,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-28 12:07:25,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:25,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:07:25,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-28 12:07:26,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478286099] [2020-10-28 12:07:26,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:26,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:26,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671275483] [2020-10-28 12:07:26,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:26,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:26,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:26,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:26,268 INFO L87 Difference]: Start difference. First operand 12267 states and 14318 transitions. Second operand 7 states. [2020-10-28 12:07:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:30,456 INFO L93 Difference]: Finished difference Result 26281 states and 31012 transitions. [2020-10-28 12:07:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:30,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 510 [2020-10-28 12:07:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:30,494 INFO L225 Difference]: With dead ends: 26281 [2020-10-28 12:07:30,495 INFO L226 Difference]: Without dead ends: 14398 [2020-10-28 12:07:30,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:07:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14398 states. [2020-10-28 12:07:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14398 to 13985. [2020-10-28 12:07:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13985 states. [2020-10-28 12:07:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13985 states to 13985 states and 16297 transitions. [2020-10-28 12:07:30,804 INFO L78 Accepts]: Start accepts. Automaton has 13985 states and 16297 transitions. Word has length 510 [2020-10-28 12:07:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:30,804 INFO L481 AbstractCegarLoop]: Abstraction has 13985 states and 16297 transitions. [2020-10-28 12:07:30,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13985 states and 16297 transitions. [2020-10-28 12:07:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2020-10-28 12:07:30,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:30,830 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 12:07:30,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:07:30,830 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:30,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:30,831 INFO L82 PathProgramCache]: Analyzing trace with hash 869876309, now seen corresponding path program 1 times [2020-10-28 12:07:30,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:30,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526959725] [2020-10-28 12:07:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 583 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:07:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:31,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:31,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:31,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:31,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:31,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:31,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:31,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:32,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:32,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:07:32,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:07:32,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:32,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:07:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:32,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:07:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:07:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:32,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:32,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:07:32,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-28 12:07:32,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:32,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:07:32,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-28 12:07:33,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526959725] [2020-10-28 12:07:33,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:33,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:33,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027898183] [2020-10-28 12:07:33,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:33,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:33,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:33,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:33,058 INFO L87 Difference]: Start difference. First operand 13985 states and 16297 transitions. Second operand 7 states. [2020-10-28 12:07:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:36,578 INFO L93 Difference]: Finished difference Result 29716 states and 34815 transitions. [2020-10-28 12:07:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:07:36,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 567 [2020-10-28 12:07:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:36,610 INFO L225 Difference]: With dead ends: 29716 [2020-10-28 12:07:36,610 INFO L226 Difference]: Without dead ends: 16115 [2020-10-28 12:07:36,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16115 states. [2020-10-28 12:07:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16115 to 15520. [2020-10-28 12:07:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15520 states. [2020-10-28 12:07:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15520 states to 15520 states and 17988 transitions. [2020-10-28 12:07:36,939 INFO L78 Accepts]: Start accepts. Automaton has 15520 states and 17988 transitions. Word has length 567 [2020-10-28 12:07:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:36,940 INFO L481 AbstractCegarLoop]: Abstraction has 15520 states and 17988 transitions. [2020-10-28 12:07:36,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:36,940 INFO L276 IsEmpty]: Start isEmpty. Operand 15520 states and 17988 transitions. [2020-10-28 12:07:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-28 12:07:36,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:36,967 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:07:36,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:07:36,968 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:36,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1975970843, now seen corresponding path program 1 times [2020-10-28 12:07:36,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:36,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056376415] [2020-10-28 12:07:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:42,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:42,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-28 12:07:42,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:07:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 12:07:42,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:42,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:42,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:42,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 430 [2020-10-28 12:07:42,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 12:07:42,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:42,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:42,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:42,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:42,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:07:42,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:42,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:42,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:42,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:07:42,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:07:42,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:42,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:42,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:42,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:07:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:07:42,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:07:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:42,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:07:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-28 12:07:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:43,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 12:07:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:07:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:43,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 12:07:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:07:43,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:07:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:43,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:07:43,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-28 12:07:43,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056376415] [2020-10-28 12:07:43,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:43,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:43,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231362796] [2020-10-28 12:07:43,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:43,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:43,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:43,856 INFO L87 Difference]: Start difference. First operand 15520 states and 17988 transitions. Second operand 7 states. [2020-10-28 12:07:47,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:47,814 INFO L93 Difference]: Finished difference Result 29322 states and 34186 transitions. [2020-10-28 12:07:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:07:47,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 658 [2020-10-28 12:07:47,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:47,857 INFO L225 Difference]: With dead ends: 29322 [2020-10-28 12:07:47,858 INFO L226 Difference]: Without dead ends: 16880 [2020-10-28 12:07:47,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16880 states. [2020-10-28 12:07:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16880 to 16656. [2020-10-28 12:07:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16656 states. [2020-10-28 12:07:48,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16656 states to 16656 states and 19274 transitions. [2020-10-28 12:07:48,184 INFO L78 Accepts]: Start accepts. Automaton has 16656 states and 19274 transitions. Word has length 658 [2020-10-28 12:07:48,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:48,185 INFO L481 AbstractCegarLoop]: Abstraction has 16656 states and 19274 transitions. [2020-10-28 12:07:48,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:48,185 INFO L276 IsEmpty]: Start isEmpty. Operand 16656 states and 19274 transitions. [2020-10-28 12:07:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2020-10-28 12:07:48,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:48,214 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:48,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:07:48,214 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash 658653283, now seen corresponding path program 1 times [2020-10-28 12:07:48,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:48,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439320484] [2020-10-28 12:07:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:53,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 712 [2020-10-28 12:07:53,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 12:07:53,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:53,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 12:07:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:07:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 461 [2020-10-28 12:07:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:53,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:53,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:07:53,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:53,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:07:53,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:53,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:53,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:53,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 12:07:53,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:53,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:07:53,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:53,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:54,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:07:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 12:07:54,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:54,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:07:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:07:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:54,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:07:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:54,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:07:54,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:07:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:07:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 12:07:54,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:54,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:07:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:07:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:55,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 564 proven. 516 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-28 12:07:55,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439320484] [2020-10-28 12:07:55,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:55,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 12:07:55,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918634372] [2020-10-28 12:07:55,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:07:55,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:55,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:07:55,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:07:55,562 INFO L87 Difference]: Start difference. First operand 16656 states and 19274 transitions. Second operand 10 states. [2020-10-28 12:08:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:03,593 INFO L93 Difference]: Finished difference Result 40039 states and 46897 transitions. [2020-10-28 12:08:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 12:08:03,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 692 [2020-10-28 12:08:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:03,657 INFO L225 Difference]: With dead ends: 40039 [2020-10-28 12:08:03,657 INFO L226 Difference]: Without dead ends: 25694 [2020-10-28 12:08:03,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-28 12:08:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25694 states. [2020-10-28 12:08:04,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25694 to 24349. [2020-10-28 12:08:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24349 states. [2020-10-28 12:08:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24349 states to 24349 states and 27895 transitions. [2020-10-28 12:08:04,098 INFO L78 Accepts]: Start accepts. Automaton has 24349 states and 27895 transitions. Word has length 692 [2020-10-28 12:08:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:04,099 INFO L481 AbstractCegarLoop]: Abstraction has 24349 states and 27895 transitions. [2020-10-28 12:08:04,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:08:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 24349 states and 27895 transitions. [2020-10-28 12:08:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2020-10-28 12:08:04,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:04,139 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:04,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:08:04,139 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:04,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:04,140 INFO L82 PathProgramCache]: Analyzing trace with hash 247074678, now seen corresponding path program 1 times [2020-10-28 12:08:04,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:04,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061464691] [2020-10-28 12:08:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:09,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:09,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 900 [2020-10-28 12:08:09,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:08:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 12:08:09,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:09,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:08:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 12:08:09,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:09,667 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:08:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:09,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:09,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:09,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:09,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:08:09,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:09,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:09,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:09,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:08:09,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 12:08:10,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:10,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:08:10,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:10,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:08:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:10,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:10,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 12:08:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-28 12:08:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:10,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:10,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:08:10,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:08:10,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:10,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:08:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-28 12:08:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:11,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:08:11,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:08:11,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:11,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:08:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-28 12:08:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:11,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:11,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:08:11,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:11,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:08:11,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:11,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 12:08:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2020-10-28 12:08:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:08:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:08:11,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:11,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:08:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 484 proven. 476 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-10-28 12:08:12,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061464691] [2020-10-28 12:08:12,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:12,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:08:12,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498791887] [2020-10-28 12:08:12,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:08:12,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:12,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:08:12,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:12,335 INFO L87 Difference]: Start difference. First operand 24349 states and 27895 transitions. Second operand 8 states. [2020-10-28 12:08:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:17,543 INFO L93 Difference]: Finished difference Result 47385 states and 54381 transitions. [2020-10-28 12:08:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:08:17,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 878 [2020-10-28 12:08:17,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:17,592 INFO L225 Difference]: With dead ends: 47385 [2020-10-28 12:08:17,592 INFO L226 Difference]: Without dead ends: 26116 [2020-10-28 12:08:17,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:08:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26116 states. [2020-10-28 12:08:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26116 to 25293. [2020-10-28 12:08:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25293 states. [2020-10-28 12:08:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25293 states to 25293 states and 28852 transitions. [2020-10-28 12:08:18,083 INFO L78 Accepts]: Start accepts. Automaton has 25293 states and 28852 transitions. Word has length 878 [2020-10-28 12:08:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:18,084 INFO L481 AbstractCegarLoop]: Abstraction has 25293 states and 28852 transitions. [2020-10-28 12:08:18,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:08:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 25293 states and 28852 transitions. [2020-10-28 12:08:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-10-28 12:08:18,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:18,131 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:18,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:08:18,131 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:18,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:18,132 INFO L82 PathProgramCache]: Analyzing trace with hash -318849606, now seen corresponding path program 1 times [2020-10-28 12:08:18,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:18,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223124599] [2020-10-28 12:08:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 955 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 12:08:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:23,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:23,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:23,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:23,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:08:23,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:23,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:23,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:23,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:08:23,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:08:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:23,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:08:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:23,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:08:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:08:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:23,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:08:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:08:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:24,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 12:08:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:24,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-28 12:08:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:08:24,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:08:24,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:24,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:08:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:08:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:24,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:08:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 12:08:24,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:24,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:08:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-10-28 12:08:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:08:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:08:24,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:24,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 12:08:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-10-28 12:08:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:24,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:08:24,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:08:24,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:24,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:08:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2495 backedges. 609 proven. 476 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2020-10-28 12:08:25,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223124599] [2020-10-28 12:08:25,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:25,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:25,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969004151] [2020-10-28 12:08:25,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:25,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:25,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:25,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:25,680 INFO L87 Difference]: Start difference. First operand 25293 states and 28852 transitions. Second operand 7 states. [2020-10-28 12:08:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:30,171 INFO L93 Difference]: Finished difference Result 50268 states and 57357 transitions. [2020-10-28 12:08:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:30,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 931 [2020-10-28 12:08:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:30,221 INFO L225 Difference]: With dead ends: 50268 [2020-10-28 12:08:30,221 INFO L226 Difference]: Without dead ends: 25359 [2020-10-28 12:08:30,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:30,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25359 states. [2020-10-28 12:08:30,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25359 to 23973. [2020-10-28 12:08:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23973 states. [2020-10-28 12:08:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23973 states to 23973 states and 27095 transitions. [2020-10-28 12:08:30,904 INFO L78 Accepts]: Start accepts. Automaton has 23973 states and 27095 transitions. Word has length 931 [2020-10-28 12:08:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:30,905 INFO L481 AbstractCegarLoop]: Abstraction has 23973 states and 27095 transitions. [2020-10-28 12:08:30,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 23973 states and 27095 transitions. [2020-10-28 12:08:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2020-10-28 12:08:30,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:30,936 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:30,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:08:30,936 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:30,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1244718553, now seen corresponding path program 1 times [2020-10-28 12:08:30,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:30,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963320494] [2020-10-28 12:08:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-28 12:08:36,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:08:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 12:08:36,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:08:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-28 12:08:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-28 12:08:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:36,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:08:36,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:36,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:08:36,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:08:36,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:08:36,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:08:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 12:08:36,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:08:36,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-28 12:08:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:08:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-28 12:08:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:37,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:08:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-28 12:08:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:37,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:08:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:37,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-28 12:08:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:37,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:37,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:08:37,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:08:37,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:37,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:08:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-10-28 12:08:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:37,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:08:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:37,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 1212 proven. 233 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2020-10-28 12:08:38,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963320494] [2020-10-28 12:08:38,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:38,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:38,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494137932] [2020-10-28 12:08:38,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:38,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:38,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:38,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:38,169 INFO L87 Difference]: Start difference. First operand 23973 states and 27095 transitions. Second operand 7 states.