/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:50:18,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:50:18,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:50:18,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:50:18,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:50:18,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:50:18,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:50:18,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:50:18,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:50:18,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:50:18,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:50:18,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:50:18,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:50:18,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:50:18,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:50:18,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:50:18,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:50:18,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:50:18,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:50:18,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:50:18,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:50:18,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:50:18,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:50:18,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:50:18,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:50:18,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:50:18,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:50:18,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:50:18,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:50:18,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:50:18,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:50:18,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:50:18,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:50:18,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:50:18,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:50:18,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:50:18,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:50:18,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:50:18,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:50:18,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:50:18,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:50:18,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:50:18,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:50:18,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:50:18,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:50:18,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:50:18,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:50:18,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:50:18,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:50:18,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:50:18,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:50:18,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:50:18,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:50:18,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:50:18,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:50:18,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:50:18,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:50:18,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:50:18,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:50:18,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:50:18,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:50:18,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:50:18,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:50:18,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:50:18,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:50:18,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:50:18,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:50:18,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:50:18,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:50:18,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:50:18,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:50:18,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:50:18,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:50:19,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:50:19,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:50:19,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:50:19,018 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:50:19,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2020-10-29 06:50:19,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2d5c1d0f/ebf6b6191d7441c89ab1cab9458ae117/FLAGb5345e6f9 [2020-10-29 06:50:19,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:50:19,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2020-10-29 06:50:19,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2d5c1d0f/ebf6b6191d7441c89ab1cab9458ae117/FLAGb5345e6f9 [2020-10-29 06:50:20,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2d5c1d0f/ebf6b6191d7441c89ab1cab9458ae117 [2020-10-29 06:50:20,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:50:20,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:50:20,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:50:20,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:50:20,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:50:20,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:50:20" (1/1) ... [2020-10-29 06:50:20,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5ea234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:20, skipping insertion in model container [2020-10-29 06:50:20,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:50:20" (1/1) ... [2020-10-29 06:50:20,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:50:20,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:50:21,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:50:21,028 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:50:21,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:50:21,281 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:50:21,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21 WrapperNode [2020-10-29 06:50:21,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:50:21,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:50:21,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:50:21,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:50:21,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... [2020-10-29 06:50:21,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:50:21,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:50:21,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:50:21,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:50:21,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:50:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:50:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:50:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:50:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:50:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:50:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:50:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:50:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:50:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:50:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:50:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:50:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:50:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:50:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:50:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:50:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:50:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:50:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:50:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:50:23,699 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:50:23,700 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:50:23,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:50:23 BoogieIcfgContainer [2020-10-29 06:50:23,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:50:23,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:50:23,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:50:23,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:50:23,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:50:20" (1/3) ... [2020-10-29 06:50:23,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c7e0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:50:23, skipping insertion in model container [2020-10-29 06:50:23,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:50:21" (2/3) ... [2020-10-29 06:50:23,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c7e0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:50:23, skipping insertion in model container [2020-10-29 06:50:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:50:23" (3/3) ... [2020-10-29 06:50:23,712 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label47.c [2020-10-29 06:50:23,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:50:23,731 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:50:23,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:50:23,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:50:23,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:50:23,776 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:50:23,777 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:50:23,777 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:50:23,777 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:50:23,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:50:23,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:50:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:50:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 06:50:23,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:23,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:23,811 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash 166506440, now seen corresponding path program 1 times [2020-10-29 06:50:23,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:23,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520700777] [2020-10-29 06:50:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:24,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:24,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 06:50:24,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-29 06:50:24,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:24,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 06:50:24,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:50:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:24,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:24,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:24,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:50:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:24,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:24,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520700777] [2020-10-29 06:50:24,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:50:24,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:50:24,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421207941] [2020-10-29 06:50:24,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:50:24,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:24,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:50:24,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:50:24,934 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:50:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:28,081 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-29 06:50:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:28,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-29 06:50:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:28,106 INFO L225 Difference]: With dead ends: 793 [2020-10-29 06:50:28,106 INFO L226 Difference]: Without dead ends: 432 [2020-10-29 06:50:28,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-29 06:50:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-29 06:50:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-29 06:50:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-29 06:50:28,220 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 42 [2020-10-29 06:50:28,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:28,220 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-29 06:50:28,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:50:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-29 06:50:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 06:50:28,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:28,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:28,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:50:28,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:28,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2056477508, now seen corresponding path program 1 times [2020-10-29 06:50:28,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:28,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924772724] [2020-10-29 06:50:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:29,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:30,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:30,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 06:50:30,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1992 [2020-10-29 06:50:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:30,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:50:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:50:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:30,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:30,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:30,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:30,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:50:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:30,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:30,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:30,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:50:30,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:30,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 06:50:30,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:30,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:50:30,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:30,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924772724] [2020-10-29 06:50:30,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:50:30,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:50:30,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431179444] [2020-10-29 06:50:30,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:50:30,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:30,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:50:30,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:50:30,772 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-29 06:50:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:34,438 INFO L93 Difference]: Finished difference Result 1277 states and 1862 transitions. [2020-10-29 06:50:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:50:34,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-29 06:50:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:34,456 INFO L225 Difference]: With dead ends: 1277 [2020-10-29 06:50:34,456 INFO L226 Difference]: Without dead ends: 857 [2020-10-29 06:50:34,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:50:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-29 06:50:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 821. [2020-10-29 06:50:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-29 06:50:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1098 transitions. [2020-10-29 06:50:34,515 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1098 transitions. Word has length 114 [2020-10-29 06:50:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:34,515 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1098 transitions. [2020-10-29 06:50:34,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:50:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1098 transitions. [2020-10-29 06:50:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 06:50:34,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:34,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:34,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:50:34,521 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1200421172, now seen corresponding path program 1 times [2020-10-29 06:50:34,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:34,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344054358] [2020-10-29 06:50:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:36,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:36,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 06:50:36,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:50:36,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-29 06:50:36,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:36,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:36,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:50:36,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:36,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:50:36,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:36,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:36,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:36,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:50:36,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:36,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:36,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:36,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:50:36,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 06:50:36,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:36,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:50:36,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:50:36,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344054358] [2020-10-29 06:50:36,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:36,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:50:36,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054595003] [2020-10-29 06:50:36,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:50:36,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:36,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:50:36,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:36,856 INFO L87 Difference]: Start difference. First operand 821 states and 1098 transitions. Second operand 6 states. [2020-10-29 06:50:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:39,739 INFO L93 Difference]: Finished difference Result 2041 states and 2690 transitions. [2020-10-29 06:50:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:50:39,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-29 06:50:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:39,749 INFO L225 Difference]: With dead ends: 2041 [2020-10-29 06:50:39,749 INFO L226 Difference]: Without dead ends: 1226 [2020-10-29 06:50:39,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:50:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-10-29 06:50:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1213. [2020-10-29 06:50:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-29 06:50:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1528 transitions. [2020-10-29 06:50:39,800 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1528 transitions. Word has length 122 [2020-10-29 06:50:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:39,801 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 1528 transitions. [2020-10-29 06:50:39,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:50:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1528 transitions. [2020-10-29 06:50:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 06:50:39,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:39,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:39,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:50:39,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:39,806 INFO L82 PathProgramCache]: Analyzing trace with hash -505272133, now seen corresponding path program 1 times [2020-10-29 06:50:39,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:39,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658957273] [2020-10-29 06:50:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:40,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:40,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 06:50:40,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 06:50:40,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:40,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:50:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 06:50:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:40,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:40,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:40,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:50:40,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:40,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:40,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:40,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:40,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:50:40,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:40,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:50:40,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:50:40,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658957273] [2020-10-29 06:50:40,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:40,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:50:40,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625991428] [2020-10-29 06:50:40,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:50:40,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:50:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:40,748 INFO L87 Difference]: Start difference. First operand 1213 states and 1528 transitions. Second operand 5 states. [2020-10-29 06:50:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:43,485 INFO L93 Difference]: Finished difference Result 2066 states and 2802 transitions. [2020-10-29 06:50:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:43,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-29 06:50:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:43,500 INFO L225 Difference]: With dead ends: 2066 [2020-10-29 06:50:43,500 INFO L226 Difference]: Without dead ends: 1633 [2020-10-29 06:50:43,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-10-29 06:50:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1624. [2020-10-29 06:50:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1624 states. [2020-10-29 06:50:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2081 transitions. [2020-10-29 06:50:43,572 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2081 transitions. Word has length 173 [2020-10-29 06:50:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:43,575 INFO L481 AbstractCegarLoop]: Abstraction has 1624 states and 2081 transitions. [2020-10-29 06:50:43,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:50:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2081 transitions. [2020-10-29 06:50:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 06:50:43,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:43,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:50:43,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:50:43,589 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:43,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:43,590 INFO L82 PathProgramCache]: Analyzing trace with hash -544229670, now seen corresponding path program 1 times [2020-10-29 06:50:43,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:43,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846544206] [2020-10-29 06:50:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:44,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:44,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 06:50:44,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-10-29 06:50:44,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:44,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:50:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:50:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:45,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:45,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:45,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:45,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:50:45,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:45,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:45,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:45,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 06:50:45,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:45,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:50:45,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:45,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:45,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:50:45,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:50:45,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:45,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:50:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:50:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:50:45,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846544206] [2020-10-29 06:50:45,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:45,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:50:45,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567580496] [2020-10-29 06:50:45,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:50:45,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:45,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:50:45,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:50:45,617 INFO L87 Difference]: Start difference. First operand 1624 states and 2081 transitions. Second operand 8 states. [2020-10-29 06:50:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:51,413 INFO L93 Difference]: Finished difference Result 3467 states and 4665 transitions. [2020-10-29 06:50:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:50:51,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-29 06:50:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:51,430 INFO L225 Difference]: With dead ends: 3467 [2020-10-29 06:50:51,430 INFO L226 Difference]: Without dead ends: 2227 [2020-10-29 06:50:51,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:50:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-10-29 06:50:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2208. [2020-10-29 06:50:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2020-10-29 06:50:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2938 transitions. [2020-10-29 06:50:51,538 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2938 transitions. Word has length 230 [2020-10-29 06:50:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:51,539 INFO L481 AbstractCegarLoop]: Abstraction has 2208 states and 2938 transitions. [2020-10-29 06:50:51,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:50:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2938 transitions. [2020-10-29 06:50:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 06:50:51,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:51,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:50:51,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:50:51,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash -2033232818, now seen corresponding path program 1 times [2020-10-29 06:50:51,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:51,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113302766] [2020-10-29 06:50:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:52,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:54,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 06:50:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2474 [2020-10-29 06:50:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:54,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:50:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 06:50:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:54,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:54,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:54,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:50:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:54,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:54,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:54,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:54,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 06:50:54,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:54,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:50:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:50:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:54,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:54,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:50:54,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 06:50:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:54,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:50:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:50:54,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 120 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:50:55,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113302766] [2020-10-29 06:50:55,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:55,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:50:55,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772930349] [2020-10-29 06:50:55,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:50:55,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:50:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:50:55,238 INFO L87 Difference]: Start difference. First operand 2208 states and 2938 transitions. Second operand 9 states. [2020-10-29 06:51:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:00,083 INFO L93 Difference]: Finished difference Result 4118 states and 5842 transitions. [2020-10-29 06:51:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:51:00,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 231 [2020-10-29 06:51:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:00,110 INFO L225 Difference]: With dead ends: 4118 [2020-10-29 06:51:00,110 INFO L226 Difference]: Without dead ends: 2874 [2020-10-29 06:51:00,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:51:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-10-29 06:51:00,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2830. [2020-10-29 06:51:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2020-10-29 06:51:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3748 transitions. [2020-10-29 06:51:00,220 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3748 transitions. Word has length 231 [2020-10-29 06:51:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:00,221 INFO L481 AbstractCegarLoop]: Abstraction has 2830 states and 3748 transitions. [2020-10-29 06:51:00,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:51:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3748 transitions. [2020-10-29 06:51:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 06:51:00,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:00,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:51:00,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:51:00,227 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:00,227 INFO L82 PathProgramCache]: Analyzing trace with hash 603662550, now seen corresponding path program 1 times [2020-10-29 06:51:00,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:00,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041751254] [2020-10-29 06:51:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:00,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:02,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-29 06:51:02,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2331 [2020-10-29 06:51:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:02,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:51:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:51:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:02,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:02,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:02,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:02,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:51:02,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:02,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:02,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:02,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:02,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:51:02,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:02,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:03,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:03,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:51:03,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:51:03,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:03,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:51:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:51:03,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041751254] [2020-10-29 06:51:03,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:03,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:03,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313774792] [2020-10-29 06:51:03,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:03,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:03,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:03,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:03,357 INFO L87 Difference]: Start difference. First operand 2830 states and 3748 transitions. Second operand 7 states. [2020-10-29 06:51:07,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:07,557 INFO L93 Difference]: Finished difference Result 6598 states and 9328 transitions. [2020-10-29 06:51:07,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:51:07,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-29 06:51:07,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:07,586 INFO L225 Difference]: With dead ends: 6598 [2020-10-29 06:51:07,586 INFO L226 Difference]: Without dead ends: 4152 [2020-10-29 06:51:07,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:51:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2020-10-29 06:51:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 4026. [2020-10-29 06:51:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4026 states. [2020-10-29 06:51:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 5141 transitions. [2020-10-29 06:51:07,729 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 5141 transitions. Word has length 232 [2020-10-29 06:51:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:07,729 INFO L481 AbstractCegarLoop]: Abstraction has 4026 states and 5141 transitions. [2020-10-29 06:51:07,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 5141 transitions. [2020-10-29 06:51:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 06:51:07,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:07,734 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:51:07,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:51:07,735 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:07,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:07,735 INFO L82 PathProgramCache]: Analyzing trace with hash 605511370, now seen corresponding path program 1 times [2020-10-29 06:51:07,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:07,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548509858] [2020-10-29 06:51:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:09,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:09,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 06:51:09,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2040 [2020-10-29 06:51:09,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:09,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:51:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:51:09,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:09,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:09,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:09,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:09,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:09,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:51:09,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:09,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:10,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:10,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:10,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 06:51:10,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:10,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:10,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:51:10,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 06:51:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:10,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:51:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:51:10,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548509858] [2020-10-29 06:51:10,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:10,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:10,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837137897] [2020-10-29 06:51:10,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:10,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:10,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:10,500 INFO L87 Difference]: Start difference. First operand 4026 states and 5141 transitions. Second operand 7 states. [2020-10-29 06:51:14,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:14,567 INFO L93 Difference]: Finished difference Result 9117 states and 11906 transitions. [2020-10-29 06:51:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:14,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-29 06:51:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:14,595 INFO L225 Difference]: With dead ends: 9117 [2020-10-29 06:51:14,596 INFO L226 Difference]: Without dead ends: 5475 [2020-10-29 06:51:14,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2020-10-29 06:51:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 5419. [2020-10-29 06:51:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-10-29 06:51:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 6896 transitions. [2020-10-29 06:51:14,746 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 6896 transitions. Word has length 238 [2020-10-29 06:51:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:14,747 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 6896 transitions. [2020-10-29 06:51:14,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 6896 transitions. [2020-10-29 06:51:14,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 06:51:14,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:14,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:14,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:51:14,753 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:14,753 INFO L82 PathProgramCache]: Analyzing trace with hash 225252034, now seen corresponding path program 1 times [2020-10-29 06:51:14,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:14,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426427726] [2020-10-29 06:51:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 06:51:15,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-29 06:51:15,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:15,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:51:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 06:51:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:15,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:15,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:15,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:15,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:15,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:51:15,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:15,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:15,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:15,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:51:15,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:51:15,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:15,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:51:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 06:51:15,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426427726] [2020-10-29 06:51:15,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:15,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:51:15,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223648781] [2020-10-29 06:51:15,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:51:15,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:15,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:51:15,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:15,905 INFO L87 Difference]: Start difference. First operand 5419 states and 6896 transitions. Second operand 6 states. [2020-10-29 06:51:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:20,262 INFO L93 Difference]: Finished difference Result 9325 states and 12168 transitions. [2020-10-29 06:51:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:51:20,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-10-29 06:51:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:20,291 INFO L225 Difference]: With dead ends: 9325 [2020-10-29 06:51:20,292 INFO L226 Difference]: Without dead ends: 5659 [2020-10-29 06:51:20,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:20,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2020-10-29 06:51:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 5415. [2020-10-29 06:51:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5415 states. [2020-10-29 06:51:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 6850 transitions. [2020-10-29 06:51:20,462 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 6850 transitions. Word has length 242 [2020-10-29 06:51:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:20,462 INFO L481 AbstractCegarLoop]: Abstraction has 5415 states and 6850 transitions. [2020-10-29 06:51:20,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:51:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 6850 transitions. [2020-10-29 06:51:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 06:51:20,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:20,476 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:20,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:51:20,476 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1539655978, now seen corresponding path program 1 times [2020-10-29 06:51:20,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:20,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352654100] [2020-10-29 06:51:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:20,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:25,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-29 06:51:25,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:51:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 06:51:25,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:25,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 06:51:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-29 06:51:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:25,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:25,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:51:25,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:25,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:25,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:25,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:25,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:25,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 06:51:25,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:25,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:25,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:51:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:51:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:26,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 06:51:26,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:51:26,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:26,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:51:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 256 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 06:51:26,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352654100] [2020-10-29 06:51:26,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:26,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:26,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385931747] [2020-10-29 06:51:26,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:26,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:26,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:26,543 INFO L87 Difference]: Start difference. First operand 5415 states and 6850 transitions. Second operand 7 states. [2020-10-29 06:51:29,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:29,823 INFO L93 Difference]: Finished difference Result 9689 states and 12437 transitions. [2020-10-29 06:51:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:51:29,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-29 06:51:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:29,844 INFO L225 Difference]: With dead ends: 9689 [2020-10-29 06:51:29,844 INFO L226 Difference]: Without dead ends: 4658 [2020-10-29 06:51:29,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:51:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2020-10-29 06:51:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4604. [2020-10-29 06:51:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4604 states. [2020-10-29 06:51:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 5628 transitions. [2020-10-29 06:51:30,021 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 5628 transitions. Word has length 325 [2020-10-29 06:51:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:30,022 INFO L481 AbstractCegarLoop]: Abstraction has 4604 states and 5628 transitions. [2020-10-29 06:51:30,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 5628 transitions. [2020-10-29 06:51:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-29 06:51:30,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:30,035 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:30,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:51:30,035 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:30,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1636205006, now seen corresponding path program 1 times [2020-10-29 06:51:30,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:30,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999813942] [2020-10-29 06:51:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:30,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:31,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-29 06:51:33,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2985 [2020-10-29 06:51:33,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:51:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:51:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:33,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:51:33,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:33,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:33,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 06:51:33,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:51:33,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 06:51:33,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:51:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:51:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:33,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 06:51:33,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 235 proven. 35 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 06:51:33,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999813942] [2020-10-29 06:51:33,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:33,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:33,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56099466] [2020-10-29 06:51:33,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:33,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:33,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:33,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:33,777 INFO L87 Difference]: Start difference. First operand 4604 states and 5628 transitions. Second operand 7 states. [2020-10-29 06:51:38,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:38,705 INFO L93 Difference]: Finished difference Result 10083 states and 12444 transitions. [2020-10-29 06:51:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:38,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-29 06:51:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:38,723 INFO L225 Difference]: With dead ends: 10083 [2020-10-29 06:51:38,723 INFO L226 Difference]: Without dead ends: 5863 [2020-10-29 06:51:38,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2020-10-29 06:51:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5398. [2020-10-29 06:51:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5398 states. [2020-10-29 06:51:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 6482 transitions. [2020-10-29 06:51:38,852 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 6482 transitions. Word has length 329 [2020-10-29 06:51:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:38,853 INFO L481 AbstractCegarLoop]: Abstraction has 5398 states and 6482 transitions. [2020-10-29 06:51:38,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 6482 transitions. [2020-10-29 06:51:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-29 06:51:38,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:38,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:38,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:51:38,867 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1390232242, now seen corresponding path program 1 times [2020-10-29 06:51:38,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:38,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001247478] [2020-10-29 06:51:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:39,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-29 06:51:43,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:51:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 06:51:43,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:51:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:51:43,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:44,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:44,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:51:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:51:44,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:51:44,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:51:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:51:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:44,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:51:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 108 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-29 06:51:44,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001247478] [2020-10-29 06:51:44,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:44,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:51:44,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112601755] [2020-10-29 06:51:44,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:51:44,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:44,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:51:44,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:51:44,630 INFO L87 Difference]: Start difference. First operand 5398 states and 6482 transitions. Second operand 5 states. [2020-10-29 06:51:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:47,816 INFO L93 Difference]: Finished difference Result 12742 states and 15708 transitions. [2020-10-29 06:51:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:47,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-29 06:51:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:47,843 INFO L225 Difference]: With dead ends: 12742 [2020-10-29 06:51:47,843 INFO L226 Difference]: Without dead ends: 7736 [2020-10-29 06:51:47,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2020-10-29 06:51:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 7710. [2020-10-29 06:51:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7710 states. [2020-10-29 06:51:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 9214 transitions. [2020-10-29 06:51:48,087 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 9214 transitions. Word has length 329 [2020-10-29 06:51:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:48,087 INFO L481 AbstractCegarLoop]: Abstraction has 7710 states and 9214 transitions. [2020-10-29 06:51:48,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:51:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 9214 transitions. [2020-10-29 06:51:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-29 06:51:48,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:48,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:51:48,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:51:48,107 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:48,108 INFO L82 PathProgramCache]: Analyzing trace with hash -314325696, now seen corresponding path program 1 times [2020-10-29 06:51:48,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:48,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522770202] [2020-10-29 06:51:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1819 [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:51:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 06:51:50,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:51:50,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:51:50,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:50,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 06:51:50,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:51:50,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:51:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 06:51:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:51:50,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522770202] [2020-10-29 06:51:50,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:50,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:51:50,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794521113] [2020-10-29 06:51:50,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:50,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:50,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:50,824 INFO L87 Difference]: Start difference. First operand 7710 states and 9214 transitions. Second operand 7 states. [2020-10-29 06:51:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:54,707 INFO L93 Difference]: Finished difference Result 19278 states and 23422 transitions. [2020-10-29 06:51:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:51:54,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-29 06:51:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:54,744 INFO L225 Difference]: With dead ends: 19278 [2020-10-29 06:51:54,745 INFO L226 Difference]: Without dead ends: 11960 [2020-10-29 06:51:54,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11960 states. [2020-10-29 06:51:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11960 to 11742. [2020-10-29 06:51:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11742 states. [2020-10-29 06:51:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11742 states to 11742 states and 14147 transitions. [2020-10-29 06:51:55,022 INFO L78 Accepts]: Start accepts. Automaton has 11742 states and 14147 transitions. Word has length 352 [2020-10-29 06:51:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:55,023 INFO L481 AbstractCegarLoop]: Abstraction has 11742 states and 14147 transitions. [2020-10-29 06:51:55,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 11742 states and 14147 transitions. [2020-10-29 06:51:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 06:51:55,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:55,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:55,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:51:55,041 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1574188810, now seen corresponding path program 1 times [2020-10-29 06:51:55,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:55,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710695090] [2020-10-29 06:51:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-29 06:51:56,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:56,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-29 06:51:56,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:56,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:51:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:51:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 06:51:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:56,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:51:56,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 06:51:56,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:56,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:51:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:51:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:51:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:51:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 198 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:51:57,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710695090] [2020-10-29 06:51:57,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:57,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:51:57,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672770836] [2020-10-29 06:51:57,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:51:57,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:57,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:51:57,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:57,532 INFO L87 Difference]: Start difference. First operand 11742 states and 14147 transitions. Second operand 8 states. [2020-10-29 06:52:00,102 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-29 06:52:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:02,220 INFO L93 Difference]: Finished difference Result 22925 states and 27672 transitions. [2020-10-29 06:52:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:02,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-29 06:52:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:02,260 INFO L225 Difference]: With dead ends: 22925 [2020-10-29 06:52:02,260 INFO L226 Difference]: Without dead ends: 13872 [2020-10-29 06:52:02,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:52:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13872 states. [2020-10-29 06:52:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13872 to 13846. [2020-10-29 06:52:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13846 states. [2020-10-29 06:52:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13846 states to 13846 states and 16612 transitions. [2020-10-29 06:52:02,563 INFO L78 Accepts]: Start accepts. Automaton has 13846 states and 16612 transitions. Word has length 355 [2020-10-29 06:52:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:02,564 INFO L481 AbstractCegarLoop]: Abstraction has 13846 states and 16612 transitions. [2020-10-29 06:52:02,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 13846 states and 16612 transitions. [2020-10-29 06:52:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 06:52:02,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:02,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:02,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:52:02,592 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:02,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1787531123, now seen corresponding path program 1 times [2020-10-29 06:52:02,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:02,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516892767] [2020-10-29 06:52:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:04,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1845 [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 06:52:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:04,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:04,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:04,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:04,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:04,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:04,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:04,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:04,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:04,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:04,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 06:52:04,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:04,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:04,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:04,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:04,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:04,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:52:04,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:04,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:52:04,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:52:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:05,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:52:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 06:52:05,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:05,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 06:52:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 06:52:05,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516892767] [2020-10-29 06:52:05,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:05,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:52:05,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006030470] [2020-10-29 06:52:05,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:52:05,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:52:05,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:05,601 INFO L87 Difference]: Start difference. First operand 13846 states and 16612 transitions. Second operand 8 states. [2020-10-29 06:52:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:12,086 INFO L93 Difference]: Finished difference Result 26563 states and 32122 transitions. [2020-10-29 06:52:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:52:12,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2020-10-29 06:52:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:12,125 INFO L225 Difference]: With dead ends: 26563 [2020-10-29 06:52:12,125 INFO L226 Difference]: Without dead ends: 15425 [2020-10-29 06:52:12,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:52:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2020-10-29 06:52:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 15391. [2020-10-29 06:52:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15391 states. [2020-10-29 06:52:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15391 states to 15391 states and 18384 transitions. [2020-10-29 06:52:12,540 INFO L78 Accepts]: Start accepts. Automaton has 15391 states and 18384 transitions. Word has length 393 [2020-10-29 06:52:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:12,540 INFO L481 AbstractCegarLoop]: Abstraction has 15391 states and 18384 transitions. [2020-10-29 06:52:12,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15391 states and 18384 transitions. [2020-10-29 06:52:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-29 06:52:12,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:12,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:12,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:52:12,570 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:12,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1502854786, now seen corresponding path program 1 times [2020-10-29 06:52:12,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:12,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16013370] [2020-10-29 06:52:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-29 06:52:16,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3631 [2020-10-29 06:52:16,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:52:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 06:52:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 06:52:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:16,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:16,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:52:16,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:52:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-29 06:52:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:17,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:52:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 321 proven. 17 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 06:52:17,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16013370] [2020-10-29 06:52:17,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:17,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:52:17,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905900616] [2020-10-29 06:52:17,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:52:17,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:52:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:17,388 INFO L87 Difference]: Start difference. First operand 15391 states and 18384 transitions. Second operand 8 states. [2020-10-29 06:52:20,174 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 06:52:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:21,900 INFO L93 Difference]: Finished difference Result 29083 states and 34788 transitions. [2020-10-29 06:52:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:52:21,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 443 [2020-10-29 06:52:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:21,934 INFO L225 Difference]: With dead ends: 29083 [2020-10-29 06:52:21,934 INFO L226 Difference]: Without dead ends: 16381 [2020-10-29 06:52:21,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:52:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16381 states. [2020-10-29 06:52:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16381 to 16345. [2020-10-29 06:52:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16345 states. [2020-10-29 06:52:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16345 states to 16345 states and 19481 transitions. [2020-10-29 06:52:22,270 INFO L78 Accepts]: Start accepts. Automaton has 16345 states and 19481 transitions. Word has length 443 [2020-10-29 06:52:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:22,270 INFO L481 AbstractCegarLoop]: Abstraction has 16345 states and 19481 transitions. [2020-10-29 06:52:22,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:52:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 16345 states and 19481 transitions. [2020-10-29 06:52:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-29 06:52:22,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:22,311 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:52:22,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:52:22,311 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:22,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:22,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1049639272, now seen corresponding path program 1 times [2020-10-29 06:52:22,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:22,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034005521] [2020-10-29 06:52:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2896 [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-29 06:52:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:52:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:52:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:52:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:52:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:52:25,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:52:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 06:52:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-29 06:52:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:25,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:25,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:52:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 06:52:25,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:25,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 06:52:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 357 proven. 103 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-29 06:52:26,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034005521] [2020-10-29 06:52:26,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:26,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:26,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338626829] [2020-10-29 06:52:26,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:26,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:26,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:26,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:26,237 INFO L87 Difference]: Start difference. First operand 16345 states and 19481 transitions. Second operand 7 states. [2020-10-29 06:52:31,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:31,377 INFO L93 Difference]: Finished difference Result 36044 states and 43105 transitions. [2020-10-29 06:52:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:52:31,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-29 06:52:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:31,433 INFO L225 Difference]: With dead ends: 36044 [2020-10-29 06:52:31,433 INFO L226 Difference]: Without dead ends: 20093 [2020-10-29 06:52:31,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:52:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2020-10-29 06:52:31,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 20021. [2020-10-29 06:52:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20021 states. [2020-10-29 06:52:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20021 states to 20021 states and 23571 transitions. [2020-10-29 06:52:31,859 INFO L78 Accepts]: Start accepts. Automaton has 20021 states and 23571 transitions. Word has length 522 [2020-10-29 06:52:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:31,859 INFO L481 AbstractCegarLoop]: Abstraction has 20021 states and 23571 transitions. [2020-10-29 06:52:31,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 20021 states and 23571 transitions. [2020-10-29 06:52:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-10-29 06:52:31,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:31,895 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:31,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:52:31,895 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:31,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:31,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2056764775, now seen corresponding path program 1 times [2020-10-29 06:52:31,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:31,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085639066] [2020-10-29 06:52:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:32,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:37,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 626 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 578 [2020-10-29 06:52:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:37,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:37,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:37,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:37,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:52:37,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:37,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:37,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:37,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 06:52:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:52:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:37,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:37,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 06:52:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-29 06:52:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:38,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:52:38,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-29 06:52:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:38,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:52:38,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 06:52:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:38,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:52:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 06:52:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:38,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 06:52:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 333 proven. 430 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 06:52:38,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085639066] [2020-10-29 06:52:38,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:38,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:52:38,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240916279] [2020-10-29 06:52:38,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:52:38,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:38,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:52:38,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:52:38,968 INFO L87 Difference]: Start difference. First operand 20021 states and 23571 transitions. Second operand 11 states. [2020-10-29 06:52:39,168 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-29 06:52:42,005 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-29 06:52:43,521 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-29 06:52:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:46,345 INFO L93 Difference]: Finished difference Result 39515 states and 47261 transitions. [2020-10-29 06:52:46,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:52:46,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 608 [2020-10-29 06:52:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:46,408 INFO L225 Difference]: With dead ends: 39515 [2020-10-29 06:52:46,408 INFO L226 Difference]: Without dead ends: 22394 [2020-10-29 06:52:46,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-29 06:52:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22394 states. [2020-10-29 06:52:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22394 to 22174. [2020-10-29 06:52:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22174 states. [2020-10-29 06:52:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22174 states to 22174 states and 25972 transitions. [2020-10-29 06:52:47,142 INFO L78 Accepts]: Start accepts. Automaton has 22174 states and 25972 transitions. Word has length 608 [2020-10-29 06:52:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:47,142 INFO L481 AbstractCegarLoop]: Abstraction has 22174 states and 25972 transitions. [2020-10-29 06:52:47,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:52:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22174 states and 25972 transitions. [2020-10-29 06:52:47,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-29 06:52:47,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:47,181 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:47,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:52:47,182 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:47,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:47,183 INFO L82 PathProgramCache]: Analyzing trace with hash 565022835, now seen corresponding path program 1 times [2020-10-29 06:52:47,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:47,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265181862] [2020-10-29 06:52:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:48,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:52,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:52,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 669 [2020-10-29 06:52:52,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:52:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 06:52:52,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:52,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:52:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 404 [2020-10-29 06:52:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:52,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:52,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:52:52,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:52,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:52,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:52,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:52,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:52,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:52:52,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:52,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:52:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:53,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:53,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:53,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:53,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 06:52:53,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:53,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:53,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 06:52:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:53,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 06:52:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 06:52:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:53,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 06:52:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 06:52:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:53,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:53,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:52:53,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 06:52:53,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:53,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 06:52:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:53,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-10-29 06:52:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:53,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:53,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:52:53,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 06:52:53,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:53,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 06:52:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 394 proven. 593 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-29 06:52:54,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265181862] [2020-10-29 06:52:54,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:54,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:52:54,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599861293] [2020-10-29 06:52:54,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:52:54,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:54,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:52:54,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:52:54,656 INFO L87 Difference]: Start difference. First operand 22174 states and 25972 transitions. Second operand 10 states. [2020-10-29 06:52:54,873 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-29 06:52:55,952 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-29 06:53:00,140 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-29 06:53:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:01,056 INFO L93 Difference]: Finished difference Result 41710 states and 49085 transitions. [2020-10-29 06:53:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 06:53:01,058 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 649 [2020-10-29 06:53:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:01,100 INFO L225 Difference]: With dead ends: 41710 [2020-10-29 06:53:01,101 INFO L226 Difference]: Without dead ends: 23997 [2020-10-29 06:53:01,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-10-29 06:53:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2020-10-29 06:53:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23916. [2020-10-29 06:53:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23916 states. [2020-10-29 06:53:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23916 states to 23916 states and 27884 transitions. [2020-10-29 06:53:01,562 INFO L78 Accepts]: Start accepts. Automaton has 23916 states and 27884 transitions. Word has length 649 [2020-10-29 06:53:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:01,562 INFO L481 AbstractCegarLoop]: Abstraction has 23916 states and 27884 transitions. [2020-10-29 06:53:01,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:53:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23916 states and 27884 transitions. [2020-10-29 06:53:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2020-10-29 06:53:01,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:01,597 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:01,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:53:01,598 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1166308218, now seen corresponding path program 1 times [2020-10-29 06:53:01,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:01,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522988101] [2020-10-29 06:53:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 685 [2020-10-29 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:06,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-29 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 06:53:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:06,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:06,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:06,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 06:53:06,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:06,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 06:53:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 06:53:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:07,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 06:53:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-29 06:53:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:07,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:07,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:53:07,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 06:53:07,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:07,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 06:53:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-29 06:53:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 06:53:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:07,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1253 backedges. 421 proven. 207 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2020-10-29 06:53:07,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522988101] [2020-10-29 06:53:07,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:07,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:07,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093505432] [2020-10-29 06:53:07,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:07,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:07,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:07,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:07,864 INFO L87 Difference]: Start difference. First operand 23916 states and 27884 transitions. Second operand 7 states. [2020-10-29 06:53:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:12,383 INFO L93 Difference]: Finished difference Result 47369 states and 55242 transitions. [2020-10-29 06:53:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:12,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 665 [2020-10-29 06:53:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:12,435 INFO L225 Difference]: With dead ends: 47369 [2020-10-29 06:53:12,435 INFO L226 Difference]: Without dead ends: 23647 [2020-10-29 06:53:12,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23647 states. [2020-10-29 06:53:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23647 to 23568. [2020-10-29 06:53:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23568 states. [2020-10-29 06:53:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23568 states to 23568 states and 27069 transitions. [2020-10-29 06:53:12,938 INFO L78 Accepts]: Start accepts. Automaton has 23568 states and 27069 transitions. Word has length 665 [2020-10-29 06:53:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:12,939 INFO L481 AbstractCegarLoop]: Abstraction has 23568 states and 27069 transitions. [2020-10-29 06:53:12,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 23568 states and 27069 transitions. [2020-10-29 06:53:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2020-10-29 06:53:12,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:12,973 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:12,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:53:12,973 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:12,974 INFO L82 PathProgramCache]: Analyzing trace with hash 389525838, now seen corresponding path program 1 times [2020-10-29 06:53:12,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:12,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844167214] [2020-10-29 06:53:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 06:53:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:18,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:18,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:18,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:18,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:18,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:18,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:18,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:53:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:18,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:18,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:53:18,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:53:18,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:18,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:53:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:18,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 06:53:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-29 06:53:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:18,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:18,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:53:18,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:53:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:18,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-29 06:53:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 06:53:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 06:53:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 289 proven. 317 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-10-29 06:53:19,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844167214] [2020-10-29 06:53:19,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:19,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:19,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999425944] [2020-10-29 06:53:19,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:19,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:19,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:19,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:19,469 INFO L87 Difference]: Start difference. First operand 23568 states and 27069 transitions. Second operand 7 states. [2020-10-29 06:53:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:24,147 INFO L93 Difference]: Finished difference Result 49486 states and 56849 transitions. [2020-10-29 06:53:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:53:24,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 673 [2020-10-29 06:53:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:24,212 INFO L225 Difference]: With dead ends: 49486 [2020-10-29 06:53:24,212 INFO L226 Difference]: Without dead ends: 26302 [2020-10-29 06:53:24,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:53:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26302 states. [2020-10-29 06:53:24,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26302 to 25836. [2020-10-29 06:53:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25836 states. [2020-10-29 06:53:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25836 states to 25836 states and 29365 transitions. [2020-10-29 06:53:24,658 INFO L78 Accepts]: Start accepts. Automaton has 25836 states and 29365 transitions. Word has length 673 [2020-10-29 06:53:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:24,658 INFO L481 AbstractCegarLoop]: Abstraction has 25836 states and 29365 transitions. [2020-10-29 06:53:24,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 25836 states and 29365 transitions. [2020-10-29 06:53:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-29 06:53:24,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:24,694 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:24,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:53:24,695 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:24,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:24,695 INFO L82 PathProgramCache]: Analyzing trace with hash 451947645, now seen corresponding path program 1 times [2020-10-29 06:53:24,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:24,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782869821] [2020-10-29 06:53:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:25,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:29,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:29,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:29,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 698 [2020-10-29 06:53:29,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:53:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 06:53:29,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:29,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:53:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:53:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:30,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:53:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:53:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:53:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-29 06:53:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:53:30,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 06:53:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:53:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 06:53:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-10-29 06:53:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 06:53:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 289 proven. 317 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2020-10-29 06:53:31,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782869821] [2020-10-29 06:53:31,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:31,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:31,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266596158] [2020-10-29 06:53:31,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:31,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:31,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:31,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:31,185 INFO L87 Difference]: Start difference. First operand 25836 states and 29365 transitions. Second operand 7 states. [2020-10-29 06:53:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:35,749 INFO L93 Difference]: Finished difference Result 46159 states and 52722 transitions. [2020-10-29 06:53:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:53:35,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 678 [2020-10-29 06:53:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:35,802 INFO L225 Difference]: With dead ends: 46159 [2020-10-29 06:53:35,802 INFO L226 Difference]: Without dead ends: 26502 [2020-10-29 06:53:35,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:53:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26502 states. [2020-10-29 06:53:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26502 to 26400. [2020-10-29 06:53:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26400 states. [2020-10-29 06:53:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26400 states to 26400 states and 29913 transitions. [2020-10-29 06:53:36,254 INFO L78 Accepts]: Start accepts. Automaton has 26400 states and 29913 transitions. Word has length 678 [2020-10-29 06:53:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:36,254 INFO L481 AbstractCegarLoop]: Abstraction has 26400 states and 29913 transitions. [2020-10-29 06:53:36,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 26400 states and 29913 transitions. [2020-10-29 06:53:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-29 06:53:36,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:36,287 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:36,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:53:36,287 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1815767145, now seen corresponding path program 1 times [2020-10-29 06:53:36,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:36,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656144311] [2020-10-29 06:53:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:36,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 703 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 415 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:53:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:41,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 06:53:41,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:53:41,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-29 06:53:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:53:41,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 06:53:41,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 06:53:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:53:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-10-29 06:53:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:42,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 565 proven. 103 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2020-10-29 06:53:42,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656144311] [2020-10-29 06:53:42,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:42,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:42,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488209913] [2020-10-29 06:53:42,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:42,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:42,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:42,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:42,530 INFO L87 Difference]: Start difference. First operand 26400 states and 29913 transitions. Second operand 7 states. [2020-10-29 06:53:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:47,225 INFO L93 Difference]: Finished difference Result 54007 states and 61314 transitions. [2020-10-29 06:53:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:47,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 683 [2020-10-29 06:53:47,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:47,280 INFO L225 Difference]: With dead ends: 54007 [2020-10-29 06:53:47,280 INFO L226 Difference]: Without dead ends: 27991 [2020-10-29 06:53:47,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27991 states. [2020-10-29 06:53:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27991 to 27900. [2020-10-29 06:53:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27900 states. [2020-10-29 06:53:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27900 states to 27900 states and 31463 transitions. [2020-10-29 06:53:47,764 INFO L78 Accepts]: Start accepts. Automaton has 27900 states and 31463 transitions. Word has length 683 [2020-10-29 06:53:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:47,765 INFO L481 AbstractCegarLoop]: Abstraction has 27900 states and 31463 transitions. [2020-10-29 06:53:47,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27900 states and 31463 transitions. [2020-10-29 06:53:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2020-10-29 06:53:47,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:47,804 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:47,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:53:47,804 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:47,805 INFO L82 PathProgramCache]: Analyzing trace with hash -662745803, now seen corresponding path program 1 times [2020-10-29 06:53:47,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:47,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120127547] [2020-10-29 06:53:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-29 06:53:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:53,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:53,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:53,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:53:53,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:53,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:53,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking...