/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/Problem16_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:51:01,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:51:01,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:51:01,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:51:01,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:51:01,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:51:01,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:51:01,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:51:01,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:51:01,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:51:01,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:51:01,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:51:01,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:51:01,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:51:01,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:51:01,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:51:01,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:51:01,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:51:01,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:51:01,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:51:01,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:51:01,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:51:01,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:51:01,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:51:01,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:51:01,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:51:01,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:51:01,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:51:01,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:51:01,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:51:01,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:51:01,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:51:01,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:51:01,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:51:01,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:51:01,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:51:01,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:51:01,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:51:01,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:51:01,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:51:01,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:51:01,466 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 23:51:01,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:51:01,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:51:01,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:51:01,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:51:01,535 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:51:01,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:51:01,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:51:01,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:51:01,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:51:01,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:51:01,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:51:01,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:51:01,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:51:01,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:51:01,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:51:01,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:51:01,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:51:01,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:51:01,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:51:01,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:51:01,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:51:01,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:51:01,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:51:01,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:51:01,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:51:01,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:51:01,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:51:01,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:51:01,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:51:01,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:51:01,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:51:02,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:51:02,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:51:02,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:51:02,019 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:51:02,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label04.c [2020-10-26 23:51:02,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f00354e08/d55df0616a8c4cbc9087e22ee3aaf4da/FLAG20b94e5ba [2020-10-26 23:51:02,980 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:51:02,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label04.c [2020-10-26 23:51:03,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f00354e08/d55df0616a8c4cbc9087e22ee3aaf4da/FLAG20b94e5ba [2020-10-26 23:51:03,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f00354e08/d55df0616a8c4cbc9087e22ee3aaf4da [2020-10-26 23:51:03,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:51:03,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:51:03,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:51:03,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:51:03,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:51:03,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:51:03" (1/1) ... [2020-10-26 23:51:03,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b69ac1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:03, skipping insertion in model container [2020-10-26 23:51:03,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:51:03" (1/1) ... [2020-10-26 23:51:03,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:51:03,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:51:04,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:51:04,128 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:51:04,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:51:04,396 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:51:04,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04 WrapperNode [2020-10-26 23:51:04,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:51:04,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:51:04,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:51:04,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:51:04,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (1/1) ... [2020-10-26 23:51:04,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (1/1) ... [2020-10-26 23:51:04,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (1/1) ... [2020-10-26 23:51:04,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (1/1) ... [2020-10-26 23:51:04,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (1/1) ... [2020-10-26 23:51:04,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (1/1) ... [2020-10-26 23:51:04,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (1/1) ... [2020-10-26 23:51:04,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:51:04,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:51:04,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:51:04,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:51:04,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (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 23:51:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:51:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:51:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:51:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:51:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:51:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:51:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:51:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:51:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:51:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:51:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:51:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:51:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:51:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:51:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:51:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:51:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:51:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:51:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:51:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:51:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:51:07,176 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:51:07,177 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:51:07,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:51:07 BoogieIcfgContainer [2020-10-26 23:51:07,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:51:07,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:51:07,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:51:07,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:51:07,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:51:03" (1/3) ... [2020-10-26 23:51:07,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae9ebbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:51:07, skipping insertion in model container [2020-10-26 23:51:07,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:04" (2/3) ... [2020-10-26 23:51:07,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae9ebbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:51:07, skipping insertion in model container [2020-10-26 23:51:07,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:51:07" (3/3) ... [2020-10-26 23:51:07,191 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label04.c [2020-10-26 23:51:07,204 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:51:07,211 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:51:07,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:51:07,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:51:07,266 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:51:07,266 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:51:07,267 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:51:07,267 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:51:07,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:51:07,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:51:07,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:51:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:51:07,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 23:51:07,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:07,305 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] [2020-10-26 23:51:07,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:07,314 INFO L82 PathProgramCache]: Analyzing trace with hash 105500644, now seen corresponding path program 1 times [2020-10-26 23:51:07,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:07,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079815261] [2020-10-26 23:51:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:08,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:08,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-26 23:51:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-26 23:51:08,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:51:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:51:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:08,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:08,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:08,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:51:08,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:08,414 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 23:51:08,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079815261] [2020-10-26 23:51:08,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:08,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:51:08,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255735601] [2020-10-26 23:51:08,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:51:08,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:08,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:51:08,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:51:08,444 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-26 23:51:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:15,120 INFO L93 Difference]: Finished difference Result 1520 states and 2853 transitions. [2020-10-26 23:51:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:51:15,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-26 23:51:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:15,150 INFO L225 Difference]: With dead ends: 1520 [2020-10-26 23:51:15,150 INFO L226 Difference]: Without dead ends: 1039 [2020-10-26 23:51:15,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-26 23:51:15,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-26 23:51:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-26 23:51:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1630 transitions. [2020-10-26 23:51:15,314 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1630 transitions. Word has length 35 [2020-10-26 23:51:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:15,315 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1630 transitions. [2020-10-26 23:51:15,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:51:15,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1630 transitions. [2020-10-26 23:51:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 23:51:15,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:15,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:15,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:51:15,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:15,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1889893059, now seen corresponding path program 1 times [2020-10-26 23:51:15,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:15,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64359589] [2020-10-26 23:51:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:16,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:16,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 23:51:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-26 23:51:16,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:16,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:16,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:51:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:51:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:16,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:16,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:16,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:51:16,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:16,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:16,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:16,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:51:16,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:51:16,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:51:16,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:17,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64359589] [2020-10-26 23:51:17,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:17,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:51:17,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665607141] [2020-10-26 23:51:17,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:51:17,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:17,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:51:17,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:51:17,027 INFO L87 Difference]: Start difference. First operand 1032 states and 1630 transitions. Second operand 8 states. [2020-10-26 23:51:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:22,457 INFO L93 Difference]: Finished difference Result 2416 states and 3757 transitions. [2020-10-26 23:51:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:51:22,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-10-26 23:51:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:22,470 INFO L225 Difference]: With dead ends: 2416 [2020-10-26 23:51:22,470 INFO L226 Difference]: Without dead ends: 1390 [2020-10-26 23:51:22,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:51:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-10-26 23:51:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1382. [2020-10-26 23:51:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-10-26 23:51:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1912 transitions. [2020-10-26 23:51:22,581 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1912 transitions. Word has length 110 [2020-10-26 23:51:22,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:22,582 INFO L481 AbstractCegarLoop]: Abstraction has 1382 states and 1912 transitions. [2020-10-26 23:51:22,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:51:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1912 transitions. [2020-10-26 23:51:22,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 23:51:22,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:22,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:22,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:51:22,593 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:22,594 INFO L82 PathProgramCache]: Analyzing trace with hash 261173669, now seen corresponding path program 1 times [2020-10-26 23:51:22,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:22,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267646969] [2020-10-26 23:51:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:23,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:23,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 23:51:23,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-26 23:51:23,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:51:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:23,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:23,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:23,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:23,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:51:23,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:23,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:23,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:23,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:51:23,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:23,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:51:23,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:51:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:23,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267646969] [2020-10-26 23:51:23,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:23,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:51:23,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650224596] [2020-10-26 23:51:23,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:51:23,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:23,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:51:23,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:51:23,976 INFO L87 Difference]: Start difference. First operand 1382 states and 1912 transitions. Second operand 8 states. [2020-10-26 23:51:32,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:32,221 INFO L93 Difference]: Finished difference Result 5554 states and 7913 transitions. [2020-10-26 23:51:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:51:32,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-26 23:51:32,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:32,262 INFO L225 Difference]: With dead ends: 5554 [2020-10-26 23:51:32,262 INFO L226 Difference]: Without dead ends: 4178 [2020-10-26 23:51:32,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:51:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2020-10-26 23:51:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4158. [2020-10-26 23:51:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4158 states. [2020-10-26 23:51:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 5486 transitions. [2020-10-26 23:51:32,435 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 5486 transitions. Word has length 111 [2020-10-26 23:51:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:32,436 INFO L481 AbstractCegarLoop]: Abstraction has 4158 states and 5486 transitions. [2020-10-26 23:51:32,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:51:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 5486 transitions. [2020-10-26 23:51:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-26 23:51:32,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:32,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:51:32,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:51:32,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1330481356, now seen corresponding path program 1 times [2020-10-26 23:51:32,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:32,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049420933] [2020-10-26 23:51:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:32,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-26 23:51:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:51:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3307 [2020-10-26 23:51:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:51:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-26 23:51:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:36,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:36,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:36,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:36,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:51:36,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:36,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:36,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:36,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:51:36,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:51:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:51:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:51:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:36,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:36,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:51:36,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:36,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-26 23:51:36,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:51:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:51:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 56 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:51:37,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049420933] [2020-10-26 23:51:37,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:37,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:51:37,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322260276] [2020-10-26 23:51:37,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:51:37,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:37,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:51:37,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:37,233 INFO L87 Difference]: Start difference. First operand 4158 states and 5486 transitions. Second operand 12 states. [2020-10-26 23:51:37,481 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-26 23:51:38,040 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 23:51:38,314 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-26 23:51:38,966 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-26 23:51:40,382 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-26 23:51:41,112 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-26 23:51:41,413 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-26 23:51:41,655 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-26 23:51:44,760 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-26 23:51:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:50,848 INFO L93 Difference]: Finished difference Result 5002 states and 6952 transitions. [2020-10-26 23:51:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 23:51:50,849 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 209 [2020-10-26 23:51:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:50,882 INFO L225 Difference]: With dead ends: 5002 [2020-10-26 23:51:50,882 INFO L226 Difference]: Without dead ends: 4999 [2020-10-26 23:51:50,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2020-10-26 23:51:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2020-10-26 23:51:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4853. [2020-10-26 23:51:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4853 states. [2020-10-26 23:51:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4853 states to 4853 states and 6669 transitions. [2020-10-26 23:51:51,083 INFO L78 Accepts]: Start accepts. Automaton has 4853 states and 6669 transitions. Word has length 209 [2020-10-26 23:51:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:51,085 INFO L481 AbstractCegarLoop]: Abstraction has 4853 states and 6669 transitions. [2020-10-26 23:51:51,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:51:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4853 states and 6669 transitions. [2020-10-26 23:51:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-26 23:51:51,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:51,093 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:51,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:51:51,093 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1275673629, now seen corresponding path program 1 times [2020-10-26 23:51:51,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:51,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034900661] [2020-10-26 23:51:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:56,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-26 23:51:56,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:51:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-26 23:51:56,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:51:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-26 23:51:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:56,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:51:56,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:51:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:51:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:51:56,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:51:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:51:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:57,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:57,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:51:57,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-26 23:51:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:51:57,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 23:51:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:57,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:57,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:57,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:51:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:51:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 23:51:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 83 proven. 223 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 23:51:57,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034900661] [2020-10-26 23:51:57,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:57,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:51:57,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967401476] [2020-10-26 23:51:57,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:51:57,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:57,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:51:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:51:57,780 INFO L87 Difference]: Start difference. First operand 4853 states and 6669 transitions. Second operand 11 states. [2020-10-26 23:51:57,958 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:52:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:07,471 INFO L93 Difference]: Finished difference Result 11511 states and 15922 transitions. [2020-10-26 23:52:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 23:52:07,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2020-10-26 23:52:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:07,518 INFO L225 Difference]: With dead ends: 11511 [2020-10-26 23:52:07,518 INFO L226 Difference]: Without dead ends: 6664 [2020-10-26 23:52:07,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:52:07,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2020-10-26 23:52:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 5584. [2020-10-26 23:52:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5584 states. [2020-10-26 23:52:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 7477 transitions. [2020-10-26 23:52:07,739 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 7477 transitions. Word has length 285 [2020-10-26 23:52:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:07,740 INFO L481 AbstractCegarLoop]: Abstraction has 5584 states and 7477 transitions. [2020-10-26 23:52:07,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:52:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 7477 transitions. [2020-10-26 23:52:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-26 23:52:07,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:07,761 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:07,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:52:07,761 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:07,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:07,762 INFO L82 PathProgramCache]: Analyzing trace with hash -501418110, now seen corresponding path program 1 times [2020-10-26 23:52:07,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:07,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731315856] [2020-10-26 23:52:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:12,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-26 23:52:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:52:12,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:52:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:52:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:13,074 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:52:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:13,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:13,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:52:13,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:13,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:13,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:52:13,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:52:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:13,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:52:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:13,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:13,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:13,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:52:13,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:13,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:13,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:52:13,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:52:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:13,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:52:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:13,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:52:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:13,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:13,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 23:52:13,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:13,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:52:13,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 23:52:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:13,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 108 proven. 285 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2020-10-26 23:52:14,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731315856] [2020-10-26 23:52:14,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:14,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:14,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255741908] [2020-10-26 23:52:14,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:14,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:14,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:14,203 INFO L87 Difference]: Start difference. First operand 5584 states and 7477 transitions. Second operand 7 states. [2020-10-26 23:52:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:21,578 INFO L93 Difference]: Finished difference Result 11900 states and 15854 transitions. [2020-10-26 23:52:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:52:21,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-26 23:52:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:21,613 INFO L225 Difference]: With dead ends: 11900 [2020-10-26 23:52:21,613 INFO L226 Difference]: Without dead ends: 6322 [2020-10-26 23:52:21,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:52:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2020-10-26 23:52:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 6275. [2020-10-26 23:52:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6275 states. [2020-10-26 23:52:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6275 states to 6275 states and 8263 transitions. [2020-10-26 23:52:21,810 INFO L78 Accepts]: Start accepts. Automaton has 6275 states and 8263 transitions. Word has length 539 [2020-10-26 23:52:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:21,811 INFO L481 AbstractCegarLoop]: Abstraction has 6275 states and 8263 transitions. [2020-10-26 23:52:21,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6275 states and 8263 transitions. [2020-10-26 23:52:21,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-26 23:52:21,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:21,837 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:52:21,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:52:21,837 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:21,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:21,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1991482875, now seen corresponding path program 1 times [2020-10-26 23:52:21,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:21,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451305129] [2020-10-26 23:52:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:21,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:25,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-26 23:52:27,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:52:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-26 23:52:27,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:52:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:52:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:52:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:27,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:52:27,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:27,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:52:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:52:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:52:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:52:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:52:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:52:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:52:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-26 23:52:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:52:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:52:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-26 23:52:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:27,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:52:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-26 23:52:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 23:52:27,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:52:27,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 23:52:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 329 proven. 525 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-26 23:52:28,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451305129] [2020-10-26 23:52:28,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:28,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:52:28,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291316465] [2020-10-26 23:52:28,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:52:28,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:28,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:52:28,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:52:28,335 INFO L87 Difference]: Start difference. First operand 6275 states and 8263 transitions. Second operand 9 states. [2020-10-26 23:52:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:35,305 INFO L93 Difference]: Finished difference Result 12254 states and 16297 transitions. [2020-10-26 23:52:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:52:35,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 630 [2020-10-26 23:52:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:35,340 INFO L225 Difference]: With dead ends: 12254 [2020-10-26 23:52:35,340 INFO L226 Difference]: Without dead ends: 6256 [2020-10-26 23:52:35,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:52:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2020-10-26 23:52:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 6230. [2020-10-26 23:52:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2020-10-26 23:52:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 6818 transitions. [2020-10-26 23:52:35,504 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 6818 transitions. Word has length 630 [2020-10-26 23:52:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:35,505 INFO L481 AbstractCegarLoop]: Abstraction has 6230 states and 6818 transitions. [2020-10-26 23:52:35,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:52:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 6818 transitions. [2020-10-26 23:52:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-26 23:52:35,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:35,553 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:35,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:52:35,554 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:35,554 INFO L82 PathProgramCache]: Analyzing trace with hash -818016786, now seen corresponding path program 1 times [2020-10-26 23:52:35,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:35,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038462235] [2020-10-26 23:52:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:40,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:40,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-26 23:52:40,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:52:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:52:40,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:52:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:52:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:40,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:40,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:40,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:40,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:40,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:52:40,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:40,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:40,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:41,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:41,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:52:41,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:52:41,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:52:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:41,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:52:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:41,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:52:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:52:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:41,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:41,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:41,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:52:41,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:52:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:41,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:41,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:52:41,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:52:41,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:52:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:41,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:41,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:52:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:41,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:41,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-26 23:52:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:41,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:52:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:52:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:52:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 304 proven. 431 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2020-10-26 23:52:42,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038462235] [2020-10-26 23:52:42,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:42,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:42,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557033494] [2020-10-26 23:52:42,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:42,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:42,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:42,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:42,740 INFO L87 Difference]: Start difference. First operand 6230 states and 6818 transitions. Second operand 7 states. [2020-10-26 23:52:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:48,078 INFO L93 Difference]: Finished difference Result 14855 states and 16411 transitions. [2020-10-26 23:52:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:52:48,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 930 [2020-10-26 23:52:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:48,106 INFO L225 Difference]: With dead ends: 14855 [2020-10-26 23:52:48,107 INFO L226 Difference]: Without dead ends: 9307 [2020-10-26 23:52:48,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:52:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2020-10-26 23:52:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 8956. [2020-10-26 23:52:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8956 states. [2020-10-26 23:52:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8956 states to 8956 states and 9747 transitions. [2020-10-26 23:52:48,325 INFO L78 Accepts]: Start accepts. Automaton has 8956 states and 9747 transitions. Word has length 930 [2020-10-26 23:52:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:48,326 INFO L481 AbstractCegarLoop]: Abstraction has 8956 states and 9747 transitions. [2020-10-26 23:52:48,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 8956 states and 9747 transitions. [2020-10-26 23:52:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-26 23:52:48,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:48,354 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:52:48,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:52:48,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:48,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:48,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1523847023, now seen corresponding path program 1 times [2020-10-26 23:52:48,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:48,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897449793] [2020-10-26 23:52:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:53,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:53,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-26 23:52:53,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:52:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:52:53,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:52:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:52:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:53,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:53,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:53,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:52:53,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:53,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:53,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:53,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:52:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:52:53,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:52:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:53,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:54,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:54,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:54,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:54,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:52:54,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:52:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:52:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:54,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:54,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:52:54,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:52:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:52:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:54,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:54,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:54,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:52:54,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:54,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:54,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:52:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:54,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:52:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:52:54,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:52:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:54,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-26 23:52:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:54,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:54,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:54,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:52:54,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:52:54,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:52:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-26 23:52:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:54,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:54,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:52:54,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:52:54,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:52:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 449 proven. 431 refuted. 0 times theorem prover too weak. 1589 trivial. 0 not checked. [2020-10-26 23:52:55,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897449793] [2020-10-26 23:52:55,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:55,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:52:55,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869654003] [2020-10-26 23:52:55,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:52:55,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:55,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:52:55,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:52:55,693 INFO L87 Difference]: Start difference. First operand 8956 states and 9747 transitions. Second operand 8 states. [2020-10-26 23:53:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:03,972 INFO L93 Difference]: Finished difference Result 21647 states and 23800 transitions. [2020-10-26 23:53:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:03,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1038 [2020-10-26 23:53:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:04,017 INFO L225 Difference]: With dead ends: 21647 [2020-10-26 23:53:04,017 INFO L226 Difference]: Without dead ends: 13373 [2020-10-26 23:53:04,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:53:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2020-10-26 23:53:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 13029. [2020-10-26 23:53:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13029 states. [2020-10-26 23:53:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13029 states to 13029 states and 14078 transitions. [2020-10-26 23:53:04,333 INFO L78 Accepts]: Start accepts. Automaton has 13029 states and 14078 transitions. Word has length 1038 [2020-10-26 23:53:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:04,334 INFO L481 AbstractCegarLoop]: Abstraction has 13029 states and 14078 transitions. [2020-10-26 23:53:04,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:53:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 13029 states and 14078 transitions. [2020-10-26 23:53:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1192 [2020-10-26 23:53:04,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:04,372 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:53:04,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:53:04,372 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:04,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1022705110, now seen corresponding path program 1 times [2020-10-26 23:53:04,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:04,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079604633] [2020-10-26 23:53:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:05,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:09,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1213 [2020-10-26 23:53:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-26 23:53:09,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:53:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:53:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:53:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:09,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:09,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:09,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:53:09,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:53:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:10,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:10,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:10,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:10,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-26 23:53:10,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:53:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:10,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:53:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:53:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:11,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:11,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:11,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:11,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:53:11,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:11,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:11,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-26 23:53:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:53:11,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:53:11,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:53:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2020-10-26 23:53:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:11,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:11,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:53:11,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:53:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:53:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-26 23:53:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:11,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:11,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:11,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 23:53:11,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:53:11,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 23:53:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 179 proven. 1232 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2020-10-26 23:53:12,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079604633] [2020-10-26 23:53:12,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:12,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:12,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478562805] [2020-10-26 23:53:12,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:12,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:12,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:12,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:12,964 INFO L87 Difference]: Start difference. First operand 13029 states and 14078 transitions. Second operand 7 states. [2020-10-26 23:53:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:17,062 INFO L93 Difference]: Finished difference Result 25723 states and 27833 transitions. [2020-10-26 23:53:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:53:17,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1191 [2020-10-26 23:53:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:17,100 INFO L225 Difference]: With dead ends: 25723 [2020-10-26 23:53:17,100 INFO L226 Difference]: Without dead ends: 13376 [2020-10-26 23:53:17,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:53:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2020-10-26 23:53:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 13368. [2020-10-26 23:53:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13368 states. [2020-10-26 23:53:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13368 states to 13368 states and 14429 transitions. [2020-10-26 23:53:17,379 INFO L78 Accepts]: Start accepts. Automaton has 13368 states and 14429 transitions. Word has length 1191 [2020-10-26 23:53:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:17,380 INFO L481 AbstractCegarLoop]: Abstraction has 13368 states and 14429 transitions. [2020-10-26 23:53:17,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13368 states and 14429 transitions. [2020-10-26 23:53:17,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1263 [2020-10-26 23:53:17,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:17,414 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:17,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:53:17,415 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:17,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:17,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1420877775, now seen corresponding path program 1 times [2020-10-26 23:53:17,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:17,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145131068] [2020-10-26 23:53:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:22,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:22,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1286 [2020-10-26 23:53:22,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:53:22,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:53:22,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:53:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:53:22,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:22,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:22,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:22,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:22,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:22,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:22,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:53:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:53:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:23,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:23,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:53:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:53:23,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:53:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-26 23:53:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-10-26 23:53:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:23,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 963 [2020-10-26 23:53:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:23,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-26 23:53:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:23,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 23:53:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:53:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 23:53:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 540 proven. 540 refuted. 0 times theorem prover too weak. 2037 trivial. 0 not checked. [2020-10-26 23:53:24,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145131068] [2020-10-26 23:53:24,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:24,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:53:24,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724660622] [2020-10-26 23:53:24,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:53:24,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:24,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:53:24,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:53:24,781 INFO L87 Difference]: Start difference. First operand 13368 states and 14429 transitions. Second operand 8 states. [2020-10-26 23:53:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:30,961 INFO L93 Difference]: Finished difference Result 29451 states and 32164 transitions. [2020-10-26 23:53:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:53:30,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1262 [2020-10-26 23:53:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:31,003 INFO L225 Difference]: With dead ends: 29451 [2020-10-26 23:53:31,004 INFO L226 Difference]: Without dead ends: 16765 [2020-10-26 23:53:31,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:53:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16765 states. [2020-10-26 23:53:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16765 to 16759. [2020-10-26 23:53:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16759 states. [2020-10-26 23:53:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16759 states to 16759 states and 18223 transitions. [2020-10-26 23:53:31,339 INFO L78 Accepts]: Start accepts. Automaton has 16759 states and 18223 transitions. Word has length 1262 [2020-10-26 23:53:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:31,340 INFO L481 AbstractCegarLoop]: Abstraction has 16759 states and 18223 transitions. [2020-10-26 23:53:31,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:53:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16759 states and 18223 transitions. [2020-10-26 23:53:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1499 [2020-10-26 23:53:31,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:31,383 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:53:31,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:53:31,384 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash 751557987, now seen corresponding path program 1 times [2020-10-26 23:53:31,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:31,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494245690] [2020-10-26 23:53:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:32,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1526 [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:36,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:36,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:36,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:53:37,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:53:37,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:53:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:53:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:53:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:53:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:37,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:53:37,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-26 23:53:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:53:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1057 [2020-10-26 23:53:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:53:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:53:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:53:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1169 [2020-10-26 23:53:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:53:38,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:53:38,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:53:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1384 [2020-10-26 23:53:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4505 backedges. 548 proven. 626 refuted. 0 times theorem prover too weak. 3331 trivial. 0 not checked. [2020-10-26 23:53:39,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494245690] [2020-10-26 23:53:39,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:39,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:39,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899079136] [2020-10-26 23:53:39,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:39,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:39,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:39,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:39,663 INFO L87 Difference]: Start difference. First operand 16759 states and 18223 transitions. Second operand 7 states. [2020-10-26 23:53:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:44,494 INFO L93 Difference]: Finished difference Result 33185 states and 36162 transitions. [2020-10-26 23:53:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:53:44,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1498 [2020-10-26 23:53:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:44,532 INFO L225 Difference]: With dead ends: 33185 [2020-10-26 23:53:44,532 INFO L226 Difference]: Without dead ends: 17108 [2020-10-26 23:53:44,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:53:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17108 states. [2020-10-26 23:53:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17108 to 17106. [2020-10-26 23:53:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17106 states. [2020-10-26 23:53:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17106 states to 17106 states and 18603 transitions. [2020-10-26 23:53:44,860 INFO L78 Accepts]: Start accepts. Automaton has 17106 states and 18603 transitions. Word has length 1498 [2020-10-26 23:53:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:44,861 INFO L481 AbstractCegarLoop]: Abstraction has 17106 states and 18603 transitions. [2020-10-26 23:53:44,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 17106 states and 18603 transitions. [2020-10-26 23:53:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2020-10-26 23:53:44,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:44,916 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:53:44,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:53:44,917 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:44,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1630457697, now seen corresponding path program 1 times [2020-10-26 23:53:44,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:44,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291630879] [2020-10-26 23:53:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1528 [2020-10-26 23:53:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:53:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5246 [2020-10-26 23:53:50,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:53:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:53:50,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:53:50,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:53:50,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:53:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:53:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:53:51,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:53:51,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:53:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:53:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:53:51,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:53:51,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:53:51,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-10-26 23:53:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:53:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 23:53:51,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:53:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1059 [2020-10-26 23:53:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1171 [2020-10-26 23:53:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:51,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:51,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:53:51,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:53:51,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:53:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:51,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1386 [2020-10-26 23:53:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:52,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:52,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:53:52,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:53:52,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:53:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4509 backedges. 548 proven. 626 refuted. 0 times theorem prover too weak. 3335 trivial. 0 not checked. [2020-10-26 23:53:53,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291630879] [2020-10-26 23:53:53,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:53,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:53,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858411791] [2020-10-26 23:53:53,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:53,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:53,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:53,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:53,335 INFO L87 Difference]: Start difference. First operand 17106 states and 18603 transitions. Second operand 7 states. [2020-10-26 23:53:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:58,911 INFO L93 Difference]: Finished difference Result 37252 states and 40668 transitions. [2020-10-26 23:53:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:53:58,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1500 [2020-10-26 23:53:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:58,961 INFO L225 Difference]: With dead ends: 37252 [2020-10-26 23:53:58,962 INFO L226 Difference]: Without dead ends: 20828 [2020-10-26 23:53:58,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:53:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20828 states. [2020-10-26 23:53:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20828 to 20488. [2020-10-26 23:53:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20488 states. [2020-10-26 23:53:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20488 states to 20488 states and 22234 transitions. [2020-10-26 23:53:59,376 INFO L78 Accepts]: Start accepts. Automaton has 20488 states and 22234 transitions. Word has length 1500 [2020-10-26 23:53:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:59,377 INFO L481 AbstractCegarLoop]: Abstraction has 20488 states and 22234 transitions. [2020-10-26 23:53:59,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20488 states and 22234 transitions. [2020-10-26 23:53:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1592 [2020-10-26 23:53:59,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:59,424 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:53:59,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:53:59,425 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:59,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1190443939, now seen corresponding path program 1 times [2020-10-26 23:53:59,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:59,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408085015] [2020-10-26 23:53:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:04,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:04,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1621 [2020-10-26 23:54:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:54:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5236 [2020-10-26 23:54:04,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:54:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 23:54:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:05,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:05,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:54:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:05,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:54:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:54:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:54:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:54:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:05,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:54:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:54:05,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:54:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-10-26 23:54:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:05,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:05,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:54:05,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:54:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 819 [2020-10-26 23:54:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:05,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:05,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:54:05,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:54:05,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:54:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:05,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 961 [2020-10-26 23:54:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:06,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:54:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:06,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 23:54:06,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:54:06,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:06,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1262 [2020-10-26 23:54:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:06,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:06,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:54:06,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:54:06,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:06,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:54:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:06,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1477 [2020-10-26 23:54:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4790 backedges. 511 proven. 332 refuted. 0 times theorem prover too weak. 3947 trivial. 0 not checked. [2020-10-26 23:54:07,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408085015] [2020-10-26 23:54:07,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:07,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:54:07,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735879966] [2020-10-26 23:54:07,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:54:07,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:07,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:54:07,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:54:07,787 INFO L87 Difference]: Start difference. First operand 20488 states and 22234 transitions. Second operand 8 states. [2020-10-26 23:54:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:14,107 INFO L93 Difference]: Finished difference Result 40303 states and 43787 transitions. [2020-10-26 23:54:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:54:14,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1591 [2020-10-26 23:54:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:14,159 INFO L225 Difference]: With dead ends: 40303 [2020-10-26 23:54:14,159 INFO L226 Difference]: Without dead ends: 20497 [2020-10-26 23:54:14,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:54:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20497 states. [2020-10-26 23:54:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20497 to 19482. [2020-10-26 23:54:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19482 states. [2020-10-26 23:54:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19482 states to 19482 states and 21131 transitions. [2020-10-26 23:54:14,558 INFO L78 Accepts]: Start accepts. Automaton has 19482 states and 21131 transitions. Word has length 1591 [2020-10-26 23:54:14,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:14,559 INFO L481 AbstractCegarLoop]: Abstraction has 19482 states and 21131 transitions. [2020-10-26 23:54:14,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:54:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 19482 states and 21131 transitions. [2020-10-26 23:54:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1604 [2020-10-26 23:54:14,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:14,722 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:54:14,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:54:14,722 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:14,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:14,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1406087418, now seen corresponding path program 1 times [2020-10-26 23:54:14,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:14,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362917021] [2020-10-26 23:54:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:19,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:19,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1635 [2020-10-26 23:54:19,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:54:19,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:54:19,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:54:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:54:19,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:20,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:20,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:20,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:54:20,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:20,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:20,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:20,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:20,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:54:20,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:20,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:20,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:20,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:54:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:20,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:20,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:54:20,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:20,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:54:20,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:54:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:20,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:20,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:20,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:20,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:54:20,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:20,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:54:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:20,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:20,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:20,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:54:20,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:54:20,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:54:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:54:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:21,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:21,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:54:21,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:54:21,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:54:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-26 23:54:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:21,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:21,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:54:21,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:21,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:54:21,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:54:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:21,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2020-10-26 23:54:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:21,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:21,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-26 23:54:21,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:54:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-26 23:54:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:54:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:21,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:21,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 23:54:21,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:54:21,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1274 [2020-10-26 23:54:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:54:21,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:54:21,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:54:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1489 [2020-10-26 23:54:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5362 backedges. 870 proven. 422 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2020-10-26 23:54:23,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362917021] [2020-10-26 23:54:23,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:23,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:23,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272978373] [2020-10-26 23:54:23,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:23,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:23,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:23,060 INFO L87 Difference]: Start difference. First operand 19482 states and 21131 transitions. Second operand 7 states. [2020-10-26 23:54:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:30,036 INFO L93 Difference]: Finished difference Result 42360 states and 46122 transitions. [2020-10-26 23:54:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:54:30,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1603 [2020-10-26 23:54:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:30,073 INFO L225 Difference]: With dead ends: 42360 [2020-10-26 23:54:30,074 INFO L226 Difference]: Without dead ends: 23560 [2020-10-26 23:54:30,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:54:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23560 states. [2020-10-26 23:54:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23560 to 22886. [2020-10-26 23:54:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22886 states. [2020-10-26 23:54:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22886 states to 22886 states and 24718 transitions. [2020-10-26 23:54:30,473 INFO L78 Accepts]: Start accepts. Automaton has 22886 states and 24718 transitions. Word has length 1603 [2020-10-26 23:54:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:30,474 INFO L481 AbstractCegarLoop]: Abstraction has 22886 states and 24718 transitions. [2020-10-26 23:54:30,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22886 states and 24718 transitions. [2020-10-26 23:54:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1618 [2020-10-26 23:54:30,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:30,516 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:30,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:54:30,516 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash -499593377, now seen corresponding path program 1 times [2020-10-26 23:54:30,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:30,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303896799] [2020-10-26 23:54:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:31,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking...