/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/Problem18_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:51:30,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:51:30,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:51:30,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:51:30,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:51:30,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:51:30,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:51:30,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:51:30,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:51:30,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:51:30,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:51:30,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:51:30,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:51:30,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:51:30,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:51:30,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:51:30,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:51:30,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:51:30,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:51:30,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:51:30,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:51:30,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:51:30,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:51:30,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:51:30,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:51:30,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:51:30,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:51:30,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:51:30,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:51:30,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:51:30,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:51:30,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:51:30,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:51:30,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:51:30,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:51:30,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:51:30,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:51:30,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:51:30,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:51:30,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:51:30,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:51:30,338 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 13:51:30,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:51:30,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:51:30,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:51:30,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:51:30,371 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:51:30,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:51:30,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:51:30,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:51:30,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:51:30,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:51:30,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:51:30,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:51:30,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:51:30,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:51:30,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:51:30,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:51:30,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:51:30,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:51:30,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:51:30,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:51:30,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:51:30,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:51:30,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:51:30,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:51:30,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:51:30,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:51:30,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:51:30,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:51:30,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:51:30,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:51:30,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:51:30,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:51:30,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:51:30,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:51:30,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:51:30,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label22.c [2020-10-28 13:51:30,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00568647c/4118aad7731946e9b33028b715d639f2/FLAG39620e43a [2020-10-28 13:51:32,096 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:51:32,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label22.c [2020-10-28 13:51:32,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00568647c/4118aad7731946e9b33028b715d639f2/FLAG39620e43a [2020-10-28 13:51:32,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00568647c/4118aad7731946e9b33028b715d639f2 [2020-10-28 13:51:32,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:51:32,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:51:32,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:51:32,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:51:32,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:51:32,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:51:32" (1/1) ... [2020-10-28 13:51:32,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557c60b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:32, skipping insertion in model container [2020-10-28 13:51:32,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:51:32" (1/1) ... [2020-10-28 13:51:32,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:51:32,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:51:33,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:51:33,904 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:51:34,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:51:34,541 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:51:34,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34 WrapperNode [2020-10-28 13:51:34,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:51:34,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:51:34,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:51:34,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:51:34,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (1/1) ... [2020-10-28 13:51:34,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (1/1) ... [2020-10-28 13:51:34,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (1/1) ... [2020-10-28 13:51:34,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (1/1) ... [2020-10-28 13:51:34,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (1/1) ... [2020-10-28 13:51:34,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (1/1) ... [2020-10-28 13:51:34,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (1/1) ... [2020-10-28 13:51:34,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:51:34,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:51:34,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:51:34,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:51:34,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (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 13:51:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:51:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:51:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:51:34,973 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:51:34,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:51:34,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:51:34,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:51:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:51:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:51:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:51:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:51:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:51:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:51:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:51:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:51:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:51:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:51:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:51:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:51:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:51:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:51:39,196 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:51:39,196 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:51:39,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:51:39 BoogieIcfgContainer [2020-10-28 13:51:39,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:51:39,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:51:39,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:51:39,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:51:39,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:51:32" (1/3) ... [2020-10-28 13:51:39,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e225cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:51:39, skipping insertion in model container [2020-10-28 13:51:39,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:34" (2/3) ... [2020-10-28 13:51:39,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e225cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:51:39, skipping insertion in model container [2020-10-28 13:51:39,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:51:39" (3/3) ... [2020-10-28 13:51:39,215 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label22.c [2020-10-28 13:51:39,228 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:51:39,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:51:39,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:51:39,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:51:39,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:51:39,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:51:39,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:51:39,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:51:39,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:51:39,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:51:39,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:51:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:51:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 13:51:39,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:39,360 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] [2020-10-28 13:51:39,361 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:39,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:39,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1071773112, now seen corresponding path program 1 times [2020-10-28 13:51:39,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:39,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674606178] [2020-10-28 13:51:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:40,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 13:51:40,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-28 13:51:40,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:40,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 13:51:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:51:40,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:40,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:40,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:40,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:51:40,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:40,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:40,466 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 13:51:40,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674606178] [2020-10-28 13:51:40,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:40,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:51:40,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495301806] [2020-10-28 13:51:40,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:51:40,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:40,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:51:40,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:51:40,501 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:51:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:49,749 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 13:51:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:51:49,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-28 13:51:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:49,783 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:51:49,783 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:51:49,795 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 13:51:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:51:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 13:51:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 13:51:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2332 transitions. [2020-10-28 13:51:49,996 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2332 transitions. Word has length 48 [2020-10-28 13:51:49,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:49,998 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2332 transitions. [2020-10-28 13:51:49,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:51:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2332 transitions. [2020-10-28 13:51:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 13:51:50,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:50,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:50,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:51:50,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2034293712, now seen corresponding path program 1 times [2020-10-28 13:51:50,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:50,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968942547] [2020-10-28 13:51:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:51,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:51,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:51:51,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:51:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-28 13:51:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:51,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:51:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:51:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:51:51,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:51,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:51:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:51,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:51,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:51,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:51:51,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:51:51,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:51,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:51:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:51:51,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968942547] [2020-10-28 13:51:51,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:51,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:51:51,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555056196] [2020-10-28 13:51:51,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:51,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:51,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:51,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:51,743 INFO L87 Difference]: Start difference. First operand 1426 states and 2332 transitions. Second operand 7 states. [2020-10-28 13:52:01,943 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:52:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:04,262 INFO L93 Difference]: Finished difference Result 4344 states and 7158 transitions. [2020-10-28 13:52:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:04,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-28 13:52:04,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:04,284 INFO L225 Difference]: With dead ends: 4344 [2020-10-28 13:52:04,284 INFO L226 Difference]: Without dead ends: 2924 [2020-10-28 13:52:04,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:52:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-10-28 13:52:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2872. [2020-10-28 13:52:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2872 states. [2020-10-28 13:52:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 4105 transitions. [2020-10-28 13:52:04,390 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 4105 transitions. Word has length 118 [2020-10-28 13:52:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:04,391 INFO L481 AbstractCegarLoop]: Abstraction has 2872 states and 4105 transitions. [2020-10-28 13:52:04,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 4105 transitions. [2020-10-28 13:52:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 13:52:04,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:04,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:04,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:52:04,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:04,396 INFO L82 PathProgramCache]: Analyzing trace with hash -534535890, now seen corresponding path program 1 times [2020-10-28 13:52:04,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:04,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773507421] [2020-10-28 13:52:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 13:52:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:52:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-28 13:52:06,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:52:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:06,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:52:06,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:52:06,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:52:06,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:52:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:06,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773507421] [2020-10-28 13:52:06,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:06,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:52:06,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325167712] [2020-10-28 13:52:06,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:06,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:06,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:06,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:06,726 INFO L87 Difference]: Start difference. First operand 2872 states and 4105 transitions. Second operand 7 states. [2020-10-28 13:52:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:18,504 INFO L93 Difference]: Finished difference Result 6615 states and 9435 transitions. [2020-10-28 13:52:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:18,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-28 13:52:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:18,540 INFO L225 Difference]: With dead ends: 6615 [2020-10-28 13:52:18,541 INFO L226 Difference]: Without dead ends: 3749 [2020-10-28 13:52:18,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:52:18,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2020-10-28 13:52:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3635. [2020-10-28 13:52:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3635 states. [2020-10-28 13:52:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4952 transitions. [2020-10-28 13:52:18,748 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4952 transitions. Word has length 145 [2020-10-28 13:52:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:18,757 INFO L481 AbstractCegarLoop]: Abstraction has 3635 states and 4952 transitions. [2020-10-28 13:52:18,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4952 transitions. [2020-10-28 13:52:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 13:52:18,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:18,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:18,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:52:18,764 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:18,765 INFO L82 PathProgramCache]: Analyzing trace with hash 371908638, now seen corresponding path program 1 times [2020-10-28 13:52:18,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:18,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976783386] [2020-10-28 13:52:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:19,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:19,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 13:52:19,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:52:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-28 13:52:19,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:19,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 13:52:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:19,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:19,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:52:19,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:19,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:20,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:20,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 13:52:20,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:52:20,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:20,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:52:20,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:20,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976783386] [2020-10-28 13:52:20,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:20,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:52:20,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322807491] [2020-10-28 13:52:20,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:20,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:20,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:20,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:20,165 INFO L87 Difference]: Start difference. First operand 3635 states and 4952 transitions. Second operand 7 states. [2020-10-28 13:52:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:31,508 INFO L93 Difference]: Finished difference Result 10362 states and 14578 transitions. [2020-10-28 13:52:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:31,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-10-28 13:52:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:31,546 INFO L225 Difference]: With dead ends: 10362 [2020-10-28 13:52:31,547 INFO L226 Difference]: Without dead ends: 6733 [2020-10-28 13:52:31,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:52:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2020-10-28 13:52:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6595. [2020-10-28 13:52:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6595 states. [2020-10-28 13:52:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6595 states to 6595 states and 8287 transitions. [2020-10-28 13:52:31,839 INFO L78 Accepts]: Start accepts. Automaton has 6595 states and 8287 transitions. Word has length 153 [2020-10-28 13:52:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:31,841 INFO L481 AbstractCegarLoop]: Abstraction has 6595 states and 8287 transitions. [2020-10-28 13:52:31,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6595 states and 8287 transitions. [2020-10-28 13:52:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 13:52:31,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:31,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:31,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:52:31,848 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:31,849 INFO L82 PathProgramCache]: Analyzing trace with hash -173959480, now seen corresponding path program 1 times [2020-10-28 13:52:31,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:31,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015147060] [2020-10-28 13:52:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:32,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:32,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 13:52:32,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-28 13:52:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:32,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:52:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 13:52:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:32,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:32,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:32,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:52:32,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:32,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:32,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:32,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:52:32,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:52:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:32,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:52:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:32,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015147060] [2020-10-28 13:52:32,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:32,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:52:32,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462900888] [2020-10-28 13:52:32,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:52:32,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:52:32,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:52:32,879 INFO L87 Difference]: Start difference. First operand 6595 states and 8287 transitions. Second operand 6 states. [2020-10-28 13:52:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:50,465 INFO L93 Difference]: Finished difference Result 18246 states and 24142 transitions. [2020-10-28 13:52:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:52:50,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2020-10-28 13:52:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:50,516 INFO L225 Difference]: With dead ends: 18246 [2020-10-28 13:52:50,516 INFO L226 Difference]: Without dead ends: 10878 [2020-10-28 13:52:50,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:52:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10878 states. [2020-10-28 13:52:50,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10878 to 9456. [2020-10-28 13:52:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9456 states. [2020-10-28 13:52:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 10900 transitions. [2020-10-28 13:52:50,812 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 10900 transitions. Word has length 234 [2020-10-28 13:52:50,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:50,813 INFO L481 AbstractCegarLoop]: Abstraction has 9456 states and 10900 transitions. [2020-10-28 13:52:50,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:52:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 10900 transitions. [2020-10-28 13:52:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-28 13:52:50,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:50,823 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, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:50,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:52:50,824 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:50,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1408093938, now seen corresponding path program 1 times [2020-10-28 13:52:50,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:50,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92996958] [2020-10-28 13:52:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:55,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:55,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-28 13:52:55,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:52:55,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:52:55,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:55,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:52:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:52:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:56,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:56,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:52:56,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:56,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:52:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:56,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:56,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:52:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-28 13:52:56,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:56,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:52:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:52:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:56,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:56,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:52:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:52:56,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:56,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:52:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:52:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:52:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:56,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:52:56,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:52:56,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:56,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:52:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:52:57,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92996958] [2020-10-28 13:52:57,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:57,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:52:57,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027832212] [2020-10-28 13:52:57,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:57,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:57,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:57,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:57,288 INFO L87 Difference]: Start difference. First operand 9456 states and 10900 transitions. Second operand 7 states. [2020-10-28 13:53:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:05,675 INFO L93 Difference]: Finished difference Result 21193 states and 24558 transitions. [2020-10-28 13:53:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:53:05,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 426 [2020-10-28 13:53:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:05,732 INFO L225 Difference]: With dead ends: 21193 [2020-10-28 13:53:05,733 INFO L226 Difference]: Without dead ends: 12445 [2020-10-28 13:53:05,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:53:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12445 states. [2020-10-28 13:53:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12445 to 12396. [2020-10-28 13:53:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12396 states. [2020-10-28 13:53:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12396 states to 12396 states and 14143 transitions. [2020-10-28 13:53:06,059 INFO L78 Accepts]: Start accepts. Automaton has 12396 states and 14143 transitions. Word has length 426 [2020-10-28 13:53:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:06,061 INFO L481 AbstractCegarLoop]: Abstraction has 12396 states and 14143 transitions. [2020-10-28 13:53:06,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 12396 states and 14143 transitions. [2020-10-28 13:53:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-28 13:53:06,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:06,133 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:06,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:53:06,133 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:06,134 INFO L82 PathProgramCache]: Analyzing trace with hash -646350414, now seen corresponding path program 1 times [2020-10-28 13:53:06,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:06,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188203269] [2020-10-28 13:53:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:11,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:11,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-28 13:53:11,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:53:11,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:11,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:53:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:53:11,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:11,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:53:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:11,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:11,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-28 13:53:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:11,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:53:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:11,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:11,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:11,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:11,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:53:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:11,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:53:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:53:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:53:12,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:12,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:53:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:53:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:12,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:12,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:53:12,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:53:12,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:12,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:53:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 211 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 13:53:12,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188203269] [2020-10-28 13:53:12,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:12,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:12,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677162824] [2020-10-28 13:53:12,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:12,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:12,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:12,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:12,618 INFO L87 Difference]: Start difference. First operand 12396 states and 14143 transitions. Second operand 7 states. [2020-10-28 13:53:21,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:21,476 INFO L93 Difference]: Finished difference Result 30018 states and 35387 transitions. [2020-10-28 13:53:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:53:21,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-28 13:53:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:21,556 INFO L225 Difference]: With dead ends: 30018 [2020-10-28 13:53:21,556 INFO L226 Difference]: Without dead ends: 18330 [2020-10-28 13:53:21,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:53:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18330 states. [2020-10-28 13:53:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18330 to 18257. [2020-10-28 13:53:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18257 states. [2020-10-28 13:53:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18257 states to 18257 states and 21219 transitions. [2020-10-28 13:53:22,154 INFO L78 Accepts]: Start accepts. Automaton has 18257 states and 21219 transitions. Word has length 516 [2020-10-28 13:53:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:22,155 INFO L481 AbstractCegarLoop]: Abstraction has 18257 states and 21219 transitions. [2020-10-28 13:53:22,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:22,156 INFO L276 IsEmpty]: Start isEmpty. Operand 18257 states and 21219 transitions. [2020-10-28 13:53:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2020-10-28 13:53:22,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:22,179 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:22,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:53:22,180 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:22,180 INFO L82 PathProgramCache]: Analyzing trace with hash 64367894, now seen corresponding path program 1 times [2020-10-28 13:53:22,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:22,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783418643] [2020-10-28 13:53:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:22,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:27,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:27,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 612 [2020-10-28 13:53:27,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:53:27,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 13:53:27,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:27,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:27,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:53:27,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:53:27,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:27,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:27,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:53:27,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:27,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:27,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:53:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:27,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:27,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:27,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:27,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:27,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:53:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:27,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:28,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:28,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:28,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:53:28,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:53:28,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:28,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:53:28,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:53:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:28,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:28,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:53:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 13:53:28,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:28,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:53:28,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-28 13:53:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:28,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:28,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:28,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:53:28,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:53:28,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:28,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:53:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:28,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 333 proven. 70 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-28 13:53:28,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783418643] [2020-10-28 13:53:28,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:28,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:28,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212940640] [2020-10-28 13:53:28,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:28,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:28,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:28,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:28,781 INFO L87 Difference]: Start difference. First operand 18257 states and 21219 transitions. Second operand 7 states. [2020-10-28 13:53:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:39,295 INFO L93 Difference]: Finished difference Result 41051 states and 48915 transitions. [2020-10-28 13:53:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:53:39,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 592 [2020-10-28 13:53:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:39,372 INFO L225 Difference]: With dead ends: 41051 [2020-10-28 13:53:39,372 INFO L226 Difference]: Without dead ends: 23502 [2020-10-28 13:53:39,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 13:53:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23502 states. [2020-10-28 13:53:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23502 to 22710. [2020-10-28 13:53:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22710 states. [2020-10-28 13:53:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22710 states to 22710 states and 26420 transitions. [2020-10-28 13:53:39,919 INFO L78 Accepts]: Start accepts. Automaton has 22710 states and 26420 transitions. Word has length 592 [2020-10-28 13:53:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:39,920 INFO L481 AbstractCegarLoop]: Abstraction has 22710 states and 26420 transitions. [2020-10-28 13:53:39,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 22710 states and 26420 transitions. [2020-10-28 13:53:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-28 13:53:39,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:39,932 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:39,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:53:39,932 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1575080048, now seen corresponding path program 1 times [2020-10-28 13:53:39,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:39,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163705493] [2020-10-28 13:53:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:45,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:45,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 667 [2020-10-28 13:53:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:53:45,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:45,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:53:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:53:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:45,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:45,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:45,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:45,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:53:45,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:45,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:45,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:45,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:45,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:53:45,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:45,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:53:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:45,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:45,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:45,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:45,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:53:45,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:45,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:53:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:45,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:45,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:53:45,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:53:45,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:45,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:53:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:53:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:46,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:46,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:46,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:53:46,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:53:46,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:46,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:53:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:46,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2020-10-28 13:53:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:46,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:46,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:53:46,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:46,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:53:46,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:46,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:53:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 287 proven. 166 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-28 13:53:46,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163705493] [2020-10-28 13:53:46,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:46,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:46,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914826212] [2020-10-28 13:53:46,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:46,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:46,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:46,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:46,550 INFO L87 Difference]: Start difference. First operand 22710 states and 26420 transitions. Second operand 7 states. [2020-10-28 13:54:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:00,345 INFO L93 Difference]: Finished difference Result 50518 states and 59125 transitions. [2020-10-28 13:54:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:00,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 647 [2020-10-28 13:54:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:00,429 INFO L225 Difference]: With dead ends: 50518 [2020-10-28 13:54:00,430 INFO L226 Difference]: Without dead ends: 28516 [2020-10-28 13:54:00,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 13:54:00,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28516 states. [2020-10-28 13:54:00,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28516 to 27029. [2020-10-28 13:54:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27029 states. [2020-10-28 13:54:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27029 states to 27029 states and 31288 transitions. [2020-10-28 13:54:01,030 INFO L78 Accepts]: Start accepts. Automaton has 27029 states and 31288 transitions. Word has length 647 [2020-10-28 13:54:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:01,031 INFO L481 AbstractCegarLoop]: Abstraction has 27029 states and 31288 transitions. [2020-10-28 13:54:01,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 27029 states and 31288 transitions. [2020-10-28 13:54:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2020-10-28 13:54:01,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:01,042 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:01,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:54:01,042 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:01,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1739903880, now seen corresponding path program 1 times [2020-10-28 13:54:01,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:01,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804448132] [2020-10-28 13:54:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-28 13:54:06,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:06,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 13:54:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 464 [2020-10-28 13:54:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:54:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:06,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:54:06,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:54:06,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:06,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:54:06,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:54:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:54:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:54:06,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:54:06,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:54:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-10-28 13:54:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:06,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:06,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:54:06,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:54:06,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:06,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:54:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 347 proven. 70 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-28 13:54:07,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804448132] [2020-10-28 13:54:07,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:07,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:07,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454021549] [2020-10-28 13:54:07,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:07,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:07,303 INFO L87 Difference]: Start difference. First operand 27029 states and 31288 transitions. Second operand 7 states. [2020-10-28 13:54:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:20,120 INFO L93 Difference]: Finished difference Result 74353 states and 90874 transitions. [2020-10-28 13:54:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:20,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 659 [2020-10-28 13:54:20,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:20,285 INFO L225 Difference]: With dead ends: 74353 [2020-10-28 13:54:20,285 INFO L226 Difference]: Without dead ends: 48032 [2020-10-28 13:54:20,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 13:54:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48032 states. [2020-10-28 13:54:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48032 to 47011. [2020-10-28 13:54:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47011 states. [2020-10-28 13:54:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47011 states to 47011 states and 53773 transitions. [2020-10-28 13:54:21,660 INFO L78 Accepts]: Start accepts. Automaton has 47011 states and 53773 transitions. Word has length 659 [2020-10-28 13:54:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:21,661 INFO L481 AbstractCegarLoop]: Abstraction has 47011 states and 53773 transitions. [2020-10-28 13:54:21,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 47011 states and 53773 transitions. [2020-10-28 13:54:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2020-10-28 13:54:21,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:21,677 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:21,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:54:21,677 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:21,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1605111156, now seen corresponding path program 1 times [2020-10-28 13:54:21,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:21,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555963059] [2020-10-28 13:54:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 745 [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:54:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:54:27,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:27,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:54:27,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:54:27,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:54:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:54:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:54:27,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:54:27,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:54:27,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:27,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-28 13:54:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:54:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:54:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:54:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-10-28 13:54:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:54:27,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:54:27,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:54:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 413 proven. 166 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2020-10-28 13:54:28,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555963059] [2020-10-28 13:54:28,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:28,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:54:28,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676090743] [2020-10-28 13:54:28,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:54:28,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:28,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:54:28,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:54:28,157 INFO L87 Difference]: Start difference. First operand 47011 states and 53773 transitions. Second operand 8 states. [2020-10-28 13:54:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:42,091 INFO L93 Difference]: Finished difference Result 100443 states and 115012 transitions. [2020-10-28 13:54:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:54:42,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 723 [2020-10-28 13:54:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:42,274 INFO L225 Difference]: With dead ends: 100443 [2020-10-28 13:54:42,274 INFO L226 Difference]: Without dead ends: 54140 [2020-10-28 13:54:42,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:54:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54140 states. [2020-10-28 13:54:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54140 to 54088. [2020-10-28 13:54:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54088 states. [2020-10-28 13:54:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54088 states to 54088 states and 61582 transitions. [2020-10-28 13:54:44,078 INFO L78 Accepts]: Start accepts. Automaton has 54088 states and 61582 transitions. Word has length 723 [2020-10-28 13:54:44,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:44,082 INFO L481 AbstractCegarLoop]: Abstraction has 54088 states and 61582 transitions. [2020-10-28 13:54:44,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:54:44,083 INFO L276 IsEmpty]: Start isEmpty. Operand 54088 states and 61582 transitions. [2020-10-28 13:54:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-28 13:54:44,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:44,114 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2020-10-28 13:54:44,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:54:44,114 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:44,115 INFO L82 PathProgramCache]: Analyzing trace with hash 264442926, now seen corresponding path program 1 times [2020-10-28 13:54:44,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:44,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056637838] [2020-10-28 13:54:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:44,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 792 [2020-10-28 13:54:49,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:54:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 13:54:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:49,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:54:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:54:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:49,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:49,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:49,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:54:49,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:49,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:49,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:49,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:49,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:49,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:54:49,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:49,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:49,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:50,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:50,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:50,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:50,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:50,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:54:50,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:50,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:50,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:54:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:54:50,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:50,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:54:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:54:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:50,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:54:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:54:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:50,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:54:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-28 13:54:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:50,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:50,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 13:54:50,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:54:50,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:50,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-28 13:54:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 354 proven. 110 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-10-28 13:54:51,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056637838] [2020-10-28 13:54:51,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:51,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:51,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037077230] [2020-10-28 13:54:51,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:51,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:51,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:51,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:51,182 INFO L87 Difference]: Start difference. First operand 54088 states and 61582 transitions. Second operand 7 states.