/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=SHALLOWEST --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/Problem03_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:44:55,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:44:55,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:44:55,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:44:55,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:44:55,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:44:55,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:44:55,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:44:55,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:44:55,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:44:55,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:44:55,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:44:55,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:44:55,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:44:55,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:44:55,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:44:55,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:44:55,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:44:55,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:44:55,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:44:55,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:44:55,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:44:55,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:44:55,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:44:55,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:44:55,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:44:55,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:44:55,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:44:55,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:44:55,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:44:55,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:44:55,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:44:55,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:44:55,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:44:55,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:44:55,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:44:55,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:44:55,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:44:55,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:44:55,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:44:55,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:44:55,300 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 [2020-10-26 20:44:55,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:44:55,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:44:55,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:44:55,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:44:55,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:44:55,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:44:55,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:44:55,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:44:55,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:44:55,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:44:55,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:44:55,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:44:55,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:44:55,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:44:55,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:44:55,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:44:55,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:44:55,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:44:55,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:44:55,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:44:55,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:44:55,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:44:55,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:44:55,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:44:55,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:44:55,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:44:55,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:44:55,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:44:55,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:44:55,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:44:55,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:44:55,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:44:55,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:44:55,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:44:55,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:44:55,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2020-10-26 20:44:55,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bd630c7/4c49fe637c0c4294aef548cac029d721/FLAGf85299ed4 [2020-10-26 20:44:56,832 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:44:56,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2020-10-26 20:44:56,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bd630c7/4c49fe637c0c4294aef548cac029d721/FLAGf85299ed4 [2020-10-26 20:44:56,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bd630c7/4c49fe637c0c4294aef548cac029d721 [2020-10-26 20:44:56,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:44:56,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:44:56,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:44:56,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:44:56,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:44:56,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:44:56" (1/1) ... [2020-10-26 20:44:56,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6ecc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:56, skipping insertion in model container [2020-10-26 20:44:56,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:44:56" (1/1) ... [2020-10-26 20:44:57,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:44:57,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:44:57,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:44:57,899 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:44:58,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:44:58,240 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:44:58,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58 WrapperNode [2020-10-26 20:44:58,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:44:58,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:44:58,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:44:58,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:44:58,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (1/1) ... [2020-10-26 20:44:58,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (1/1) ... [2020-10-26 20:44:58,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (1/1) ... [2020-10-26 20:44:58,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (1/1) ... [2020-10-26 20:44:58,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (1/1) ... [2020-10-26 20:44:58,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (1/1) ... [2020-10-26 20:44:58,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (1/1) ... [2020-10-26 20:44:58,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:44:58,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:44:58,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:44:58,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:44:58,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (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 [2020-10-26 20:44:58,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:44:58,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:44:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:44:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:44:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:44:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:44:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:44:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:44:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:44:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:44:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:44:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:44:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:44:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:44:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:44:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:44:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:44:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:44:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:45:01,434 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:45:01,434 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:45:01,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:45:01 BoogieIcfgContainer [2020-10-26 20:45:01,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:45:01,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:45:01,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:45:01,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:45:01,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:44:56" (1/3) ... [2020-10-26 20:45:01,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198e75c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:45:01, skipping insertion in model container [2020-10-26 20:45:01,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:58" (2/3) ... [2020-10-26 20:45:01,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198e75c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:45:01, skipping insertion in model container [2020-10-26 20:45:01,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:45:01" (3/3) ... [2020-10-26 20:45:01,446 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label22.c [2020-10-26 20:45:01,458 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:45:01,464 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:45:01,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:45:01,507 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:45:01,507 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:45:01,507 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:45:01,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:45:01,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:45:01,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:45:01,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:45:01,508 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:45:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-26 20:45:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-26 20:45:01,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:45:01,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:45:01,551 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:45:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:45:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1429696376, now seen corresponding path program 1 times [2020-10-26 20:45:01,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:45:01,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845725951] [2020-10-26 20:45:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:45:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:06,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 20:45:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:45:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4557 [2020-10-26 20:45:06,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:45:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:45:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 20:45:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:45:07,309 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-26 20:45:07,467 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 20:45:07,613 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 20:45:07,764 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 20:45:07,925 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 20:45:08,094 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 20:45:08,251 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-26 20:45:09,000 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:45:09,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:45:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:09,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:45:09,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 20:45:09,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:45:09,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:45:09,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:45:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:45:09,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845725951] [2020-10-26 20:45:09,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:45:09,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:45:09,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87349746] [2020-10-26 20:45:09,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:45:09,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:45:09,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:45:09,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:45:09,755 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-26 20:45:10,690 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-26 20:45:12,531 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-26 20:45:14,400 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-26 20:45:16,386 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-10-26 20:45:19,420 WARN L193 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 225 DAG size of output: 203 [2020-10-26 20:45:22,789 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 225 DAG size of output: 202 [2020-10-26 20:45:26,532 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 228 DAG size of output: 201 [2020-10-26 20:45:32,894 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 229 DAG size of output: 200 [2020-10-26 20:45:35,425 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 231 DAG size of output: 198 [2020-10-26 20:45:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:45:39,658 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-26 20:45:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:45:39,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 174 [2020-10-26 20:45:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:45:39,689 INFO L225 Difference]: With dead ends: 742 [2020-10-26 20:45:39,689 INFO L226 Difference]: Without dead ends: 365 [2020-10-26 20:45:39,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:45:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-26 20:45:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-26 20:45:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-26 20:45:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-26 20:45:39,828 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 174 [2020-10-26 20:45:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:45:39,832 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-26 20:45:39,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:45:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-26 20:45:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 20:45:39,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:45:39,848 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:45:39,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:45:39,849 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:45:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:45:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash -653649739, now seen corresponding path program 1 times [2020-10-26 20:45:39,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:45:39,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642823804] [2020-10-26 20:45:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:45:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:42,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:45,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:45,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-26 20:45:45,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:45:45,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 20:45:45,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 20:45:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:45:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 20:45:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 20:45:46,336 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 20:45:46,604 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-26 20:45:47,044 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-10-26 20:45:47,624 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 87 [2020-10-26 20:45:48,203 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2020-10-26 20:45:48,737 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2020-10-26 20:45:49,222 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2020-10-26 20:45:49,642 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 50 [2020-10-26 20:45:50,163 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:45:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:45:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:50,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:50,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:45:50,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:45:50,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:45:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:45:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:45:50,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:50,434 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:45:50,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:45:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:50,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:50,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:45:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:50,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 20:45:50,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:45:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:45:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:45:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:51,360 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 108 [2020-10-26 20:45:52,246 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 129 [2020-10-26 20:45:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:45:52,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642823804] [2020-10-26 20:45:52,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:45:52,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 20:45:52,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859019842] [2020-10-26 20:45:52,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 20:45:52,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:45:52,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 20:45:52,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:45:52,874 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 16 states. [2020-10-26 20:45:53,708 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-26 20:45:54,627 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 67 [2020-10-26 20:45:55,164 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 48 [2020-10-26 20:45:55,749 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 61 [2020-10-26 20:45:57,726 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 283 DAG size of output: 195 [2020-10-26 20:45:59,919 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 303 DAG size of output: 215 [2020-10-26 20:46:02,475 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 320 DAG size of output: 212 [2020-10-26 20:46:03,902 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 128 [2020-10-26 20:46:07,248 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 323 DAG size of output: 209 [2020-10-26 20:46:11,983 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 324 DAG size of output: 206 [2020-10-26 20:46:17,908 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 325 DAG size of output: 203 [2020-10-26 20:46:20,428 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 325 DAG size of output: 198 [2020-10-26 20:46:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:23,841 INFO L93 Difference]: Finished difference Result 763 states and 1219 transitions. [2020-10-26 20:46:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 20:46:23,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 185 [2020-10-26 20:46:23,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:23,849 INFO L225 Difference]: With dead ends: 763 [2020-10-26 20:46:23,850 INFO L226 Difference]: Without dead ends: 519 [2020-10-26 20:46:23,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-26 20:46:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-26 20:46:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 513. [2020-10-26 20:46:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-26 20:46:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 681 transitions. [2020-10-26 20:46:23,878 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 681 transitions. Word has length 185 [2020-10-26 20:46:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:23,882 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 681 transitions. [2020-10-26 20:46:23,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 20:46:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 681 transitions. [2020-10-26 20:46:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-26 20:46:23,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:23,886 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:46:23,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:46:23,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:23,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1467599713, now seen corresponding path program 1 times [2020-10-26 20:46:23,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:23,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202578135] [2020-10-26 20:46:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:25,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:25,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-26 20:46:25,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:46:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-10-26 20:46:25,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:46:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:46:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-26 20:46:25,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:26,393 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:26,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:46:26,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:46:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:26,618 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:46:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:26,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:26,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:26,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:46:26,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 20:46:26,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:46:26,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:46:26,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202578135] [2020-10-26 20:46:26,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:26,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:46:26,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613725959] [2020-10-26 20:46:26,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:46:26,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:26,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:46:26,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:46:26,915 INFO L87 Difference]: Start difference. First operand 513 states and 681 transitions. Second operand 6 states. [2020-10-26 20:46:27,433 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:32,018 INFO L93 Difference]: Finished difference Result 996 states and 1478 transitions. [2020-10-26 20:46:32,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:46:32,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2020-10-26 20:46:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:32,026 INFO L225 Difference]: With dead ends: 996 [2020-10-26 20:46:32,026 INFO L226 Difference]: Without dead ends: 749 [2020-10-26 20:46:32,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:46:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-10-26 20:46:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 735. [2020-10-26 20:46:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-26 20:46:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1031 transitions. [2020-10-26 20:46:32,064 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1031 transitions. Word has length 195 [2020-10-26 20:46:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:32,067 INFO L481 AbstractCegarLoop]: Abstraction has 735 states and 1031 transitions. [2020-10-26 20:46:32,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:46:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1031 transitions. [2020-10-26 20:46:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-26 20:46:32,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:32,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-26 20:46:32,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:46:32,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -403833280, now seen corresponding path program 1 times [2020-10-26 20:46:32,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:32,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155133131] [2020-10-26 20:46:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:32,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:36,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:36,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-26 20:46:36,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:46:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4488 [2020-10-26 20:46:36,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:46:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:46:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:46:36,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:37,054 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:37,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:37,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:37,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:46:37,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:46:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:37,258 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:46:37,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:37,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:37,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:37,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:37,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 20:46:37,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:46:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:37,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:37,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:46:37,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 20:46:37,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:46:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 20:46:37,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155133131] [2020-10-26 20:46:37,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:37,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:46:37,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093910578] [2020-10-26 20:46:37,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:46:37,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:37,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:46:37,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:46:37,529 INFO L87 Difference]: Start difference. First operand 735 states and 1031 transitions. Second operand 7 states. [2020-10-26 20:46:38,101 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:43,665 INFO L93 Difference]: Finished difference Result 1688 states and 2586 transitions. [2020-10-26 20:46:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:46:43,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-26 20:46:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:43,676 INFO L225 Difference]: With dead ends: 1688 [2020-10-26 20:46:43,676 INFO L226 Difference]: Without dead ends: 1219 [2020-10-26 20:46:43,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:46:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-10-26 20:46:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1195. [2020-10-26 20:46:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-10-26 20:46:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1775 transitions. [2020-10-26 20:46:43,754 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1775 transitions. Word has length 204 [2020-10-26 20:46:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:43,756 INFO L481 AbstractCegarLoop]: Abstraction has 1195 states and 1775 transitions. [2020-10-26 20:46:43,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:46:43,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1775 transitions. [2020-10-26 20:46:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-26 20:46:43,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:43,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:46:43,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:46:43,762 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:43,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:43,763 INFO L82 PathProgramCache]: Analyzing trace with hash -926561220, now seen corresponding path program 1 times [2020-10-26 20:46:43,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:43,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092215478] [2020-10-26 20:46:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:44,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:45,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 20:46:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:46:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2057 [2020-10-26 20:46:45,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:46:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:46:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 20:46:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:46,437 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:46,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:46,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:46,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:46:46,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:46:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:46:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:46,633 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:46:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:46,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:46,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:46,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 20:46:46,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:46:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:46:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:46,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:46,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:46:46,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:46:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 20:46:46,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:46:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:46:46,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092215478] [2020-10-26 20:46:46,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:46,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:46:46,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563893492] [2020-10-26 20:46:46,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:46:46,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:46:46,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:46:46,911 INFO L87 Difference]: Start difference. First operand 1195 states and 1775 transitions. Second operand 6 states. [2020-10-26 20:46:47,589 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:46:52,165 INFO L93 Difference]: Finished difference Result 3054 states and 5010 transitions. [2020-10-26 20:46:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:46:52,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2020-10-26 20:46:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:46:52,183 INFO L225 Difference]: With dead ends: 3054 [2020-10-26 20:46:52,183 INFO L226 Difference]: Without dead ends: 2125 [2020-10-26 20:46:52,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:46:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-10-26 20:46:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2085. [2020-10-26 20:46:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-26 20:46:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3047 transitions. [2020-10-26 20:46:52,270 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3047 transitions. Word has length 206 [2020-10-26 20:46:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:46:52,270 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 3047 transitions. [2020-10-26 20:46:52,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:46:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3047 transitions. [2020-10-26 20:46:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-26 20:46:52,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:46:52,278 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:46:52,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:46:52,279 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:46:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:46:52,280 INFO L82 PathProgramCache]: Analyzing trace with hash -41960878, now seen corresponding path program 1 times [2020-10-26 20:46:52,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:46:52,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671317852] [2020-10-26 20:46:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:46:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:57,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:57,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-26 20:46:57,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 20:46:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-26 20:46:57,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:46:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:46:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 20:46:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:57,942 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:46:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:46:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:57,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:57,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:46:57,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:46:57,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:46:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:46:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:58,165 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:46:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:46:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:58,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:58,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:46:58,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 20:46:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:46:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:46:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:46:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:58,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:46:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:58,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:46:58,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:46:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:46:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:46:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 20:46:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:46:58,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:46:58,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:46:58,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:46:58,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:46:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 20:46:58,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:46:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:46:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:46:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:46:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:46:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:46:58,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671317852] [2020-10-26 20:46:58,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:46:58,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:46:58,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733242280] [2020-10-26 20:46:58,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:46:58,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:46:58,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:46:58,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:46:58,503 INFO L87 Difference]: Start difference. First operand 2085 states and 3047 transitions. Second operand 9 states. [2020-10-26 20:46:59,197 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:46:59,922 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:47:01,383 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:47:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:12,211 INFO L93 Difference]: Finished difference Result 9172 states and 16665 transitions. [2020-10-26 20:47:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 20:47:12,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2020-10-26 20:47:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:12,287 INFO L225 Difference]: With dead ends: 9172 [2020-10-26 20:47:12,287 INFO L226 Difference]: Without dead ends: 7353 [2020-10-26 20:47:12,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-26 20:47:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2020-10-26 20:47:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7215. [2020-10-26 20:47:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7215 states. [2020-10-26 20:47:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7215 states to 7215 states and 11072 transitions. [2020-10-26 20:47:12,670 INFO L78 Accepts]: Start accepts. Automaton has 7215 states and 11072 transitions. Word has length 216 [2020-10-26 20:47:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:12,671 INFO L481 AbstractCegarLoop]: Abstraction has 7215 states and 11072 transitions. [2020-10-26 20:47:12,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:47:12,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7215 states and 11072 transitions. [2020-10-26 20:47:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-26 20:47:12,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:12,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:47:12,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:47:12,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:12,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1040305273, now seen corresponding path program 1 times [2020-10-26 20:47:12,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:12,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745362219] [2020-10-26 20:47:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:17,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-26 20:47:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:18,207 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:18,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:18,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:47:18,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:18,413 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:47:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:18,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:47:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 20:47:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:47:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 20:47:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:18,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:18,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:47:18,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 20:47:18,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:47:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:47:18,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745362219] [2020-10-26 20:47:18,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:18,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:47:18,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796735271] [2020-10-26 20:47:18,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:47:18,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:18,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:47:18,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:47:18,653 INFO L87 Difference]: Start difference. First operand 7215 states and 11072 transitions. Second operand 7 states. [2020-10-26 20:47:19,146 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:47:22,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:22,314 INFO L93 Difference]: Finished difference Result 13247 states and 20666 transitions. [2020-10-26 20:47:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:47:22,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-10-26 20:47:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:22,356 INFO L225 Difference]: With dead ends: 13247 [2020-10-26 20:47:22,356 INFO L226 Difference]: Without dead ends: 6298 [2020-10-26 20:47:22,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:47:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6298 states. [2020-10-26 20:47:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6298 to 6286. [2020-10-26 20:47:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6286 states. [2020-10-26 20:47:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6286 states to 6286 states and 9134 transitions. [2020-10-26 20:47:22,620 INFO L78 Accepts]: Start accepts. Automaton has 6286 states and 9134 transitions. Word has length 223 [2020-10-26 20:47:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:22,621 INFO L481 AbstractCegarLoop]: Abstraction has 6286 states and 9134 transitions. [2020-10-26 20:47:22,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:47:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6286 states and 9134 transitions. [2020-10-26 20:47:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-26 20:47:22,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:22,642 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:47:22,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:47:22,642 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:22,643 INFO L82 PathProgramCache]: Analyzing trace with hash -828182302, now seen corresponding path program 1 times [2020-10-26 20:47:22,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:22,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820685609] [2020-10-26 20:47:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:27,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:27,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-26 20:47:27,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:47:27,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 20:47:27,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:47:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:47:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 20:47:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:28,260 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:28,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:28,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:28,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:47:28,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:28,482 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:47:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:28,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:28,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:47:28,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:47:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 20:47:28,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:47:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:47:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:28,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:28,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:47:28,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 20:47:28,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:47:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 20:47:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:28,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:47:28,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:47:28,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:47:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 20:47:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:28,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:28,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:28,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:47:28,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:47:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 20:47:29,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820685609] [2020-10-26 20:47:29,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:29,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:47:29,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090732640] [2020-10-26 20:47:29,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:47:29,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:29,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:47:29,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:47:29,137 INFO L87 Difference]: Start difference. First operand 6286 states and 9134 transitions. Second operand 8 states. [2020-10-26 20:47:29,648 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:47:31,962 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:47:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:35,401 INFO L93 Difference]: Finished difference Result 14573 states and 21542 transitions. [2020-10-26 20:47:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:47:35,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2020-10-26 20:47:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:35,465 INFO L225 Difference]: With dead ends: 14573 [2020-10-26 20:47:35,466 INFO L226 Difference]: Without dead ends: 9190 [2020-10-26 20:47:35,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:47:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2020-10-26 20:47:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 9172. [2020-10-26 20:47:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9172 states. [2020-10-26 20:47:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9172 states to 9172 states and 13451 transitions. [2020-10-26 20:47:35,897 INFO L78 Accepts]: Start accepts. Automaton has 9172 states and 13451 transitions. Word has length 261 [2020-10-26 20:47:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:35,898 INFO L481 AbstractCegarLoop]: Abstraction has 9172 states and 13451 transitions. [2020-10-26 20:47:35,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:47:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 9172 states and 13451 transitions. [2020-10-26 20:47:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-26 20:47:35,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:35,936 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:47:35,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:47:35,936 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:35,937 INFO L82 PathProgramCache]: Analyzing trace with hash -338635002, now seen corresponding path program 1 times [2020-10-26 20:47:35,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:35,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276230298] [2020-10-26 20:47:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:38,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:39,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:39,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-26 20:47:39,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:47:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3121 [2020-10-26 20:47:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:47:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 20:47:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:39,640 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:39,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:39,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:39,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:39,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:47:39,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:39,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:39,845 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:47:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:39,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:39,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:47:39,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 20:47:39,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:47:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:47:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:39,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 20:47:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 20:47:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 20:47:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 20:47:40,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276230298] [2020-10-26 20:47:40,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:40,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:47:40,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409394481] [2020-10-26 20:47:40,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:47:40,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:40,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:47:40,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:47:40,595 INFO L87 Difference]: Start difference. First operand 9172 states and 13451 transitions. Second operand 7 states. [2020-10-26 20:47:41,571 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-26 20:47:43,325 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:47:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:47:47,518 INFO L93 Difference]: Finished difference Result 26426 states and 42147 transitions. [2020-10-26 20:47:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:47:47,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-26 20:47:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:47:47,620 INFO L225 Difference]: With dead ends: 26426 [2020-10-26 20:47:47,620 INFO L226 Difference]: Without dead ends: 17520 [2020-10-26 20:47:47,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:47:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17520 states. [2020-10-26 20:47:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17520 to 17236. [2020-10-26 20:47:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17236 states. [2020-10-26 20:47:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17236 states to 17236 states and 24620 transitions. [2020-10-26 20:47:48,254 INFO L78 Accepts]: Start accepts. Automaton has 17236 states and 24620 transitions. Word has length 277 [2020-10-26 20:47:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:47:48,255 INFO L481 AbstractCegarLoop]: Abstraction has 17236 states and 24620 transitions. [2020-10-26 20:47:48,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:47:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17236 states and 24620 transitions. [2020-10-26 20:47:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-26 20:47:48,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:47:48,313 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:47:48,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:47:48,313 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:47:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:47:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1803047258, now seen corresponding path program 1 times [2020-10-26 20:47:48,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:47:48,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347608493] [2020-10-26 20:47:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:47:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:48,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:53,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:53,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-26 20:47:53,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:47:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-26 20:47:53,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:47:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:47:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:47:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:53,977 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:47:53,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:47:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:47:54,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:47:54,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:47:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:47:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:47:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:54,200 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:47:54,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:47:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:54,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:54,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:47:54,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:47:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:47:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:54,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:54,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:47:54,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 20:47:54,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:47:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:47:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:47:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 20:47:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:54,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:54,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:47:54,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:47:54,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 20:47:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 20:47:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:54,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:47:54,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:47:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:47:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:54,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 20:47:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:47:54,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:47:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:47:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:47:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:47:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:47:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:47:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:47:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:47:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:47:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:47:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 105 proven. 57 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-26 20:47:54,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347608493] [2020-10-26 20:47:54,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:47:54,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:47:54,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311081101] [2020-10-26 20:47:54,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:47:54,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:47:54,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:47:54,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:47:54,703 INFO L87 Difference]: Start difference. First operand 17236 states and 24620 transitions. Second operand 8 states. [2020-10-26 20:47:55,225 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:47:58,394 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:48:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:48:01,106 INFO L93 Difference]: Finished difference Result 40746 states and 59868 transitions. [2020-10-26 20:48:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:48:01,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2020-10-26 20:48:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:48:01,213 INFO L225 Difference]: With dead ends: 40746 [2020-10-26 20:48:01,213 INFO L226 Difference]: Without dead ends: 23776 [2020-10-26 20:48:01,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:48:01,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23776 states. [2020-10-26 20:48:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23776 to 23626. [2020-10-26 20:48:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23626 states. [2020-10-26 20:48:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23626 states to 23626 states and 33501 transitions. [2020-10-26 20:48:02,019 INFO L78 Accepts]: Start accepts. Automaton has 23626 states and 33501 transitions. Word has length 283 [2020-10-26 20:48:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:48:02,020 INFO L481 AbstractCegarLoop]: Abstraction has 23626 states and 33501 transitions. [2020-10-26 20:48:02,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:48:02,020 INFO L276 IsEmpty]: Start isEmpty. Operand 23626 states and 33501 transitions. [2020-10-26 20:48:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-26 20:48:02,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:48:02,090 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:48:02,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:48:02,090 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:48:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:48:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1809493910, now seen corresponding path program 1 times [2020-10-26 20:48:02,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:48:02,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669126874] [2020-10-26 20:48:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:48:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:07,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:07,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-26 20:48:07,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:48:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 20:48:07,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:48:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:48:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 20:48:07,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:07,637 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:48:07,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:48:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:07,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:07,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:07,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:48:07,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:48:07,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:48:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:48:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:48:07,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:07,844 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:48:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:48:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:48:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:48:08,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:48:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:08,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:08,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:48:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:48:08,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:48:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:48:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:48:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 20:48:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:48:08,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:48:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:48:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:48:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:48:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 115 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:48:08,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669126874] [2020-10-26 20:48:08,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:48:08,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:48:08,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349968752] [2020-10-26 20:48:08,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:48:08,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:48:08,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:48:08,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:48:08,376 INFO L87 Difference]: Start difference. First operand 23626 states and 33501 transitions. Second operand 8 states. [2020-10-26 20:48:08,879 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 20:48:10,745 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:48:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:48:14,806 INFO L93 Difference]: Finished difference Result 52454 states and 75912 transitions. [2020-10-26 20:48:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:48:14,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 295 [2020-10-26 20:48:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:48:14,942 INFO L225 Difference]: With dead ends: 52454 [2020-10-26 20:48:14,943 INFO L226 Difference]: Without dead ends: 30579 [2020-10-26 20:48:15,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:48:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30579 states. [2020-10-26 20:48:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30579 to 30407. [2020-10-26 20:48:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30407 states. [2020-10-26 20:48:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 42861 transitions. [2020-10-26 20:48:15,879 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 42861 transitions. Word has length 295 [2020-10-26 20:48:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:48:15,879 INFO L481 AbstractCegarLoop]: Abstraction has 30407 states and 42861 transitions. [2020-10-26 20:48:15,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:48:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 42861 transitions. [2020-10-26 20:48:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-26 20:48:16,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:48:16,007 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:48:16,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:48:16,007 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:48:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:48:16,008 INFO L82 PathProgramCache]: Analyzing trace with hash 91707198, now seen corresponding path program 1 times [2020-10-26 20:48:16,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:48:16,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738013922] [2020-10-26 20:48:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:48:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:21,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:21,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-26 20:48:21,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:48:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 20:48:21,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:48:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:48:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 20:48:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:21,619 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:48:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:48:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:21,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:21,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:48:21,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:48:21,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:48:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:48:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:48:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:21,841 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:48:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:48:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:22,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:22,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 20:48:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 20:48:22,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:48:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:48:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 20:48:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 20:48:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:22,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:48:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 20:48:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:22,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:22,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:48:22,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:48:22,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:48:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:48:22,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:48:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:48:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:48:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:48:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:48:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 133 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:48:22,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738013922] [2020-10-26 20:48:22,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:48:22,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:48:22,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042629620] [2020-10-26 20:48:22,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:48:22,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:48:22,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:48:22,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:48:22,399 INFO L87 Difference]: Start difference. First operand 30407 states and 42861 transitions. Second operand 8 states. [2020-10-26 20:48:22,931 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-26 20:48:25,175 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:48:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:48:29,674 INFO L93 Difference]: Finished difference Result 80064 states and 118854 transitions. [2020-10-26 20:48:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:48:29,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-10-26 20:48:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:48:29,961 INFO L225 Difference]: With dead ends: 80064 [2020-10-26 20:48:29,961 INFO L226 Difference]: Without dead ends: 52278 [2020-10-26 20:48:30,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:48:30,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52278 states. [2020-10-26 20:48:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52278 to 51575. [2020-10-26 20:48:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51575 states. [2020-10-26 20:48:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51575 states to 51575 states and 73284 transitions. [2020-10-26 20:48:32,080 INFO L78 Accepts]: Start accepts. Automaton has 51575 states and 73284 transitions. Word has length 313 [2020-10-26 20:48:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:48:32,081 INFO L481 AbstractCegarLoop]: Abstraction has 51575 states and 73284 transitions. [2020-10-26 20:48:32,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:48:32,081 INFO L276 IsEmpty]: Start isEmpty. Operand 51575 states and 73284 transitions. [2020-10-26 20:48:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-26 20:48:32,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:48:32,188 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 20:48:32,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:48:32,188 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:48:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:48:32,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1065109125, now seen corresponding path program 1 times [2020-10-26 20:48:32,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:48:32,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911059022] [2020-10-26 20:48:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:48:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:48:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:32,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:48:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking...