/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=DEEPEST --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/Problem14_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:14:28,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:14:28,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:14:28,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:14:28,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:14:28,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:14:28,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:14:28,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:14:28,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:14:28,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:14:28,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:14:28,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:14:28,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:14:28,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:14:28,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:14:28,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:14:28,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:14:28,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:14:28,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:14:28,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:14:28,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:14:28,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:14:28,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:14:28,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:14:28,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:14:28,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:14:28,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:14:28,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:14:28,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:14:28,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:14:28,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:14:28,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:14:28,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:14:28,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:14:28,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:14:28,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:14:28,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:14:28,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:14:28,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:14:28,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:14:28,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:14:28,576 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 [2020-10-27 18:14:28,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:14:28,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:14:28,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:14:28,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:14:28,651 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:14:28,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:14:28,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:14:28,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:14:28,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:14:28,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:14:28,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:14:28,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:14:28,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:14:28,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:14:28,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:14:28,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:14:28,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:14:28,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:14:28,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:14:28,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:14:28,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:14:28,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:14:28,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:14:28,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:14:28,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:14:28,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:14:28,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:14:28,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:14:28,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:14:28,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:14:29,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:14:29,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:14:29,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:14:29,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:14:29,212 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:14:29,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label28.c [2020-10-27 18:14:29,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4780696a3/b9733589c07e4c2589552352520ed3db/FLAGd7f4a5a4a [2020-10-27 18:14:30,014 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:14:30,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label28.c [2020-10-27 18:14:30,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4780696a3/b9733589c07e4c2589552352520ed3db/FLAGd7f4a5a4a [2020-10-27 18:14:30,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4780696a3/b9733589c07e4c2589552352520ed3db [2020-10-27 18:14:30,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:14:30,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:14:30,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:14:30,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:14:30,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:14:30,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:14:30" (1/1) ... [2020-10-27 18:14:30,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d6b000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:30, skipping insertion in model container [2020-10-27 18:14:30,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:14:30" (1/1) ... [2020-10-27 18:14:30,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:14:30,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:14:30,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:14:30,925 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:14:31,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:14:31,147 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:14:31,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31 WrapperNode [2020-10-27 18:14:31,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:14:31,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:14:31,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:14:31,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:14:31,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (1/1) ... [2020-10-27 18:14:31,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (1/1) ... [2020-10-27 18:14:31,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (1/1) ... [2020-10-27 18:14:31,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (1/1) ... [2020-10-27 18:14:31,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (1/1) ... [2020-10-27 18:14:31,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (1/1) ... [2020-10-27 18:14:31,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (1/1) ... [2020-10-27 18:14:31,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:14:31,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:14:31,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:14:31,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:14:31,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (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 [2020-10-27 18:14:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:14:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:14:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:14:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:14:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:14:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:14:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:14:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:14:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:14:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:14:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:14:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:14:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:14:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:14:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:14:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:14:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:14:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:14:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:14:33,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:14:33,129 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:14:33,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:14:33 BoogieIcfgContainer [2020-10-27 18:14:33,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:14:33,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:14:33,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:14:33,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:14:33,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:14:30" (1/3) ... [2020-10-27 18:14:33,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72109a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:14:33, skipping insertion in model container [2020-10-27 18:14:33,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:31" (2/3) ... [2020-10-27 18:14:33,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72109a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:14:33, skipping insertion in model container [2020-10-27 18:14:33,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:14:33" (3/3) ... [2020-10-27 18:14:33,142 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label28.c [2020-10-27 18:14:33,154 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:14:33,167 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:14:33,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:14:33,213 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:14:33,214 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:14:33,214 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:14:33,214 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:14:33,214 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:14:33,214 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:14:33,215 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:14:33,215 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:14:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-27 18:14:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 18:14:33,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:33,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:14:33,248 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:33,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:33,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1614314178, now seen corresponding path program 1 times [2020-10-27 18:14:33,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:33,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249202052] [2020-10-27 18:14:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:33,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:33,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 18:14:33,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-27 18:14:33,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:14:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:14:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 18:14:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:14:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:34,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:34,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:14:34,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:34,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:14:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:14:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:14:34,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249202052] [2020-10-27 18:14:34,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:14:34,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:14:34,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089642603] [2020-10-27 18:14:34,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:14:34,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:34,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:14:34,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:14:34,141 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-27 18:14:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:14:36,529 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-27 18:14:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:14:36,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 18:14:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:14:36,564 INFO L225 Difference]: With dead ends: 703 [2020-10-27 18:14:36,564 INFO L226 Difference]: Without dead ends: 381 [2020-10-27 18:14:36,579 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 [2020-10-27 18:14:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-27 18:14:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-27 18:14:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-27 18:14:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-27 18:14:36,701 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 17 [2020-10-27 18:14:36,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:14:36,702 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-27 18:14:36,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:14:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-27 18:14:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 18:14:36,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:36,706 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:14:36,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:14:36,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2125431121, now seen corresponding path program 1 times [2020-10-27 18:14:36,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:36,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171515152] [2020-10-27 18:14:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:36,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:38,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:38,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 18:14:38,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:14:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-10-27 18:14:38,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:14:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 18:14:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:14:38,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:38,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:14:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:38,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:14:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:38,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:38,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:14:38,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:38,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:14:38,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:14:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:14:38,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171515152] [2020-10-27 18:14:38,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:14:38,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:14:38,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730008177] [2020-10-27 18:14:38,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:14:38,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:38,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:14:38,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:14:38,514 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 6 states. [2020-10-27 18:14:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:14:41,940 INFO L93 Difference]: Finished difference Result 1486 states and 2446 transitions. [2020-10-27 18:14:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:14:41,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-27 18:14:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:14:41,951 INFO L225 Difference]: With dead ends: 1486 [2020-10-27 18:14:41,951 INFO L226 Difference]: Without dead ends: 1117 [2020-10-27 18:14:41,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:14:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-27 18:14:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 745. [2020-10-27 18:14:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-10-27 18:14:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1149 transitions. [2020-10-27 18:14:42,034 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1149 transitions. Word has length 86 [2020-10-27 18:14:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:14:42,037 INFO L481 AbstractCegarLoop]: Abstraction has 745 states and 1149 transitions. [2020-10-27 18:14:42,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:14:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1149 transitions. [2020-10-27 18:14:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 18:14:42,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:42,045 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:14:42,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:14:42,046 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:42,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:42,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1482099117, now seen corresponding path program 1 times [2020-10-27 18:14:42,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:42,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070476150] [2020-10-27 18:14:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:42,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:14:42,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-27 18:14:42,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:14:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:14:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 18:14:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:42,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:42,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:42,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:42,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:14:42,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:14:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:14:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:42,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:42,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:14:42,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 18:14:42,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:14:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:14:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:14:43,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070476150] [2020-10-27 18:14:43,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:14:43,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 18:14:43,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839376485] [2020-10-27 18:14:43,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:14:43,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:43,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:14:43,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:14:43,070 INFO L87 Difference]: Start difference. First operand 745 states and 1149 transitions. Second operand 7 states. [2020-10-27 18:14:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:14:45,786 INFO L93 Difference]: Finished difference Result 2060 states and 3200 transitions. [2020-10-27 18:14:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:14:45,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 18:14:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:14:45,796 INFO L225 Difference]: With dead ends: 2060 [2020-10-27 18:14:45,796 INFO L226 Difference]: Without dead ends: 1321 [2020-10-27 18:14:45,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:14:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-27 18:14:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 937. [2020-10-27 18:14:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-27 18:14:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1272 transitions. [2020-10-27 18:14:45,868 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1272 transitions. Word has length 100 [2020-10-27 18:14:45,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:14:45,869 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1272 transitions. [2020-10-27 18:14:45,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:14:45,869 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1272 transitions. [2020-10-27 18:14:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 18:14:45,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:45,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:14:45,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:14:45,883 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash 345630258, now seen corresponding path program 1 times [2020-10-27 18:14:45,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:45,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679501904] [2020-10-27 18:14:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:49,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 18:14:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:14:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3372 [2020-10-27 18:14:49,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 18:14:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:14:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:49,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:14:49,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:14:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:49,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:49,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:14:49,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:49,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:14:49,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 18:14:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 18:14:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:49,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:49,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:14:49,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 18:14:49,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:14:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:14:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:14:49,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679501904] [2020-10-27 18:14:49,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:14:49,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:14:49,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850458841] [2020-10-27 18:14:49,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:14:49,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:49,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:14:49,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:14:49,865 INFO L87 Difference]: Start difference. First operand 937 states and 1272 transitions. Second operand 7 states. [2020-10-27 18:14:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:14:52,815 INFO L93 Difference]: Finished difference Result 2156 states and 3336 transitions. [2020-10-27 18:14:52,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:14:52,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-27 18:14:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:14:52,823 INFO L225 Difference]: With dead ends: 2156 [2020-10-27 18:14:52,823 INFO L226 Difference]: Without dead ends: 811 [2020-10-27 18:14:52,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:14:52,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-10-27 18:14:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 751. [2020-10-27 18:14:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-27 18:14:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 871 transitions. [2020-10-27 18:14:52,868 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 871 transitions. Word has length 173 [2020-10-27 18:14:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:14:52,869 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 871 transitions. [2020-10-27 18:14:52,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:14:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 871 transitions. [2020-10-27 18:14:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 18:14:52,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:52,872 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:14:52,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:14:52,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:52,873 INFO L82 PathProgramCache]: Analyzing trace with hash 752056682, now seen corresponding path program 1 times [2020-10-27 18:14:52,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:52,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744362908] [2020-10-27 18:14:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:54,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 18:14:54,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:14:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1986 [2020-10-27 18:14:54,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 18:14:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:14:54,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:55,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:55,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:55,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:14:55,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:55,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:55,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:14:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:55,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:55,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:14:55,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:14:55,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:14:55,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:55,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:14:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:55,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:55,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:14:55,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:14:55,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:14:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:14:55,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:14:55,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744362908] [2020-10-27 18:14:55,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:14:55,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:14:55,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033538985] [2020-10-27 18:14:55,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:14:55,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:55,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:14:55,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:14:55,512 INFO L87 Difference]: Start difference. First operand 751 states and 871 transitions. Second operand 7 states. [2020-10-27 18:14:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:14:57,285 INFO L93 Difference]: Finished difference Result 1892 states and 2250 transitions. [2020-10-27 18:14:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:14:57,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-27 18:14:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:14:57,294 INFO L225 Difference]: With dead ends: 1892 [2020-10-27 18:14:57,294 INFO L226 Difference]: Without dead ends: 1147 [2020-10-27 18:14:57,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:14:57,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-10-27 18:14:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1123. [2020-10-27 18:14:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-27 18:14:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1268 transitions. [2020-10-27 18:14:57,342 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1268 transitions. Word has length 209 [2020-10-27 18:14:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:14:57,343 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1268 transitions. [2020-10-27 18:14:57,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:14:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1268 transitions. [2020-10-27 18:14:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-27 18:14:57,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:57,353 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 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] [2020-10-27 18:14:57,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:14:57,353 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:57,354 INFO L82 PathProgramCache]: Analyzing trace with hash 539958593, now seen corresponding path program 1 times [2020-10-27 18:14:57,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:57,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473886151] [2020-10-27 18:14:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:02,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:02,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-27 18:15:02,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:15:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 18:15:02,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-27 18:15:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:15:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:02,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:02,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:02,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:02,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:02,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:02,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:15:02,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:15:02,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:02,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:15:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:02,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:02,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:02,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 18:15:02,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 18:15:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-27 18:15:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:03,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:03,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:15:03,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 18:15:03,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:15:03,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:15:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:15:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-27 18:15:03,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473886151] [2020-10-27 18:15:03,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:03,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:15:03,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674046539] [2020-10-27 18:15:03,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:15:03,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:03,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:15:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:15:03,508 INFO L87 Difference]: Start difference. First operand 1123 states and 1268 transitions. Second operand 7 states. [2020-10-27 18:15:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:05,437 INFO L93 Difference]: Finished difference Result 2282 states and 2707 transitions. [2020-10-27 18:15:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:15:05,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-27 18:15:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:05,448 INFO L225 Difference]: With dead ends: 2282 [2020-10-27 18:15:05,448 INFO L226 Difference]: Without dead ends: 1347 [2020-10-27 18:15:05,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:15:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-10-27 18:15:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1317. [2020-10-27 18:15:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-27 18:15:05,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1487 transitions. [2020-10-27 18:15:05,509 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1487 transitions. Word has length 388 [2020-10-27 18:15:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:05,510 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1487 transitions. [2020-10-27 18:15:05,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:15:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1487 transitions. [2020-10-27 18:15:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-27 18:15:05,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:05,518 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:15:05,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:15:05,519 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:05,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:05,519 INFO L82 PathProgramCache]: Analyzing trace with hash -321061309, now seen corresponding path program 1 times [2020-10-27 18:15:05,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:05,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322804754] [2020-10-27 18:15:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:10,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:10,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-27 18:15:10,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:15:10,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:15:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-27 18:15:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 18:15:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:10,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:10,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:10,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:15:10,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:10,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:10,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:15:10,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:15:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:15:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:10,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:10,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:10,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:11,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-27 18:15:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:11,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:11,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:15:11,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:15:11,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:15:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-27 18:15:11,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322804754] [2020-10-27 18:15:11,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:11,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:15:11,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804309997] [2020-10-27 18:15:11,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:15:11,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:11,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:15:11,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:15:11,357 INFO L87 Difference]: Start difference. First operand 1317 states and 1487 transitions. Second operand 6 states. [2020-10-27 18:15:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:13,563 INFO L93 Difference]: Finished difference Result 2060 states and 2425 transitions. [2020-10-27 18:15:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:15:13,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 391 [2020-10-27 18:15:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:13,574 INFO L225 Difference]: With dead ends: 2060 [2020-10-27 18:15:13,575 INFO L226 Difference]: Without dead ends: 2057 [2020-10-27 18:15:13,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:15:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2020-10-27 18:15:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1315. [2020-10-27 18:15:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-27 18:15:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1483 transitions. [2020-10-27 18:15:13,637 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1483 transitions. Word has length 391 [2020-10-27 18:15:13,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:13,638 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1483 transitions. [2020-10-27 18:15:13,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:15:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1483 transitions. [2020-10-27 18:15:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-27 18:15:13,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:13,649 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:13,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:15:13,650 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:13,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1808255826, now seen corresponding path program 1 times [2020-10-27 18:15:13,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:13,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289673646] [2020-10-27 18:15:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:13,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:18,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:18,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-27 18:15:18,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:15:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 18:15:18,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 18:15:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:15:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:18,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:18,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:18,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:18,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:15:18,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:18,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:19,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:19,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:15:19,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:15:19,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:15:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:15:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:19,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:19,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:19,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-27 18:15:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:15:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:15:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:15:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-27 18:15:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:15:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:15:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 18:15:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:15:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-27 18:15:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:19,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:15:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:15:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:15:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 150 proven. 158 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-27 18:15:19,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289673646] [2020-10-27 18:15:19,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:19,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:15:19,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663921642] [2020-10-27 18:15:19,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:15:19,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:15:19,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:15:19,901 INFO L87 Difference]: Start difference. First operand 1315 states and 1483 transitions. Second operand 7 states. [2020-10-27 18:15:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:21,940 INFO L93 Difference]: Finished difference Result 3387 states and 3934 transitions. [2020-10-27 18:15:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:15:21,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 467 [2020-10-27 18:15:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:21,952 INFO L225 Difference]: With dead ends: 3387 [2020-10-27 18:15:21,952 INFO L226 Difference]: Without dead ends: 2260 [2020-10-27 18:15:21,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:15:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2020-10-27 18:15:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2245. [2020-10-27 18:15:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-10-27 18:15:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 2522 transitions. [2020-10-27 18:15:22,025 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 2522 transitions. Word has length 467 [2020-10-27 18:15:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:22,026 INFO L481 AbstractCegarLoop]: Abstraction has 2245 states and 2522 transitions. [2020-10-27 18:15:22,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:15:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 2522 transitions. [2020-10-27 18:15:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-27 18:15:22,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:22,039 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:22,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:15:22,040 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:22,040 INFO L82 PathProgramCache]: Analyzing trace with hash 657810466, now seen corresponding path program 1 times [2020-10-27 18:15:22,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:22,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739297406] [2020-10-27 18:15:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:27,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-27 18:15:27,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:15:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 18:15:27,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 405 [2020-10-27 18:15:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:15:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:27,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:27,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:27,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:15:27,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:27,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:27,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:15:27,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:15:27,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:27,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:15:27,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 18:15:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:27,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:27,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:27,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:15:27,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-27 18:15:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:27,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:27,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:27,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:15:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:15:27,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:15:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-27 18:15:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:27,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:15:27,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 18:15:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:15:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:15:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-27 18:15:28,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739297406] [2020-10-27 18:15:28,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:28,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:15:28,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859554219] [2020-10-27 18:15:28,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:15:28,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:28,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:15:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:15:28,043 INFO L87 Difference]: Start difference. First operand 2245 states and 2522 transitions. Second operand 7 states. [2020-10-27 18:15:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:30,606 INFO L93 Difference]: Finished difference Result 5156 states and 6199 transitions. [2020-10-27 18:15:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:15:30,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 491 [2020-10-27 18:15:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:30,626 INFO L225 Difference]: With dead ends: 5156 [2020-10-27 18:15:30,626 INFO L226 Difference]: Without dead ends: 3099 [2020-10-27 18:15:30,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:15:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2020-10-27 18:15:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2999. [2020-10-27 18:15:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-10-27 18:15:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3370 transitions. [2020-10-27 18:15:30,765 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3370 transitions. Word has length 491 [2020-10-27 18:15:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:30,766 INFO L481 AbstractCegarLoop]: Abstraction has 2999 states and 3370 transitions. [2020-10-27 18:15:30,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:15:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3370 transitions. [2020-10-27 18:15:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-27 18:15:30,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:30,774 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:30,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:15:30,774 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:30,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash -565860936, now seen corresponding path program 1 times [2020-10-27 18:15:30,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:30,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621031102] [2020-10-27 18:15:30,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:30,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 412 [2020-10-27 18:15:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 18:15:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:36,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:36,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:36,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:15:36,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:36,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:36,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:36,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:15:36,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:15:36,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 18:15:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:36,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:36,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:36,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:15:36,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-27 18:15:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:36,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:15:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:15:36,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:15:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-27 18:15:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:36,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:15:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:15:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 18:15:36,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:15:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:15:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:15:36,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2020-10-27 18:15:37,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621031102] [2020-10-27 18:15:37,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:37,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:15:37,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615483454] [2020-10-27 18:15:37,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:15:37,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:37,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:15:37,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:15:37,241 INFO L87 Difference]: Start difference. First operand 2999 states and 3370 transitions. Second operand 10 states. [2020-10-27 18:15:37,534 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-27 18:15:37,741 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-27 18:15:38,071 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-27 18:15:38,300 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-10-27 18:15:39,835 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-27 18:15:40,083 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-10-27 18:15:40,453 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-27 18:15:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:40,825 INFO L93 Difference]: Finished difference Result 5955 states and 6742 transitions. [2020-10-27 18:15:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 18:15:40,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 498 [2020-10-27 18:15:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:40,842 INFO L225 Difference]: With dead ends: 5955 [2020-10-27 18:15:40,842 INFO L226 Difference]: Without dead ends: 3093 [2020-10-27 18:15:40,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-10-27 18:15:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2020-10-27 18:15:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2999. [2020-10-27 18:15:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-10-27 18:15:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3364 transitions. [2020-10-27 18:15:40,940 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3364 transitions. Word has length 498 [2020-10-27 18:15:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:40,941 INFO L481 AbstractCegarLoop]: Abstraction has 2999 states and 3364 transitions. [2020-10-27 18:15:40,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:15:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3364 transitions. [2020-10-27 18:15:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-27 18:15:40,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:40,949 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-10-27 18:15:40,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:15:40,949 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:40,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1911280808, now seen corresponding path program 1 times [2020-10-27 18:15:40,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:40,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947248394] [2020-10-27 18:15:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-27 18:15:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:15:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 18:15:46,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 420 [2020-10-27 18:15:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 18:15:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:46,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:46,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:46,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:15:46,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:15:46,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:46,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 18:15:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:46,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:46,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:15:46,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-27 18:15:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 18:15:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:46,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-27 18:15:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:15:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:15:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 18:15:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:15:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:15:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-10-27 18:15:46,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947248394] [2020-10-27 18:15:46,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:46,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:15:46,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572274831] [2020-10-27 18:15:46,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:15:46,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:15:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:15:46,885 INFO L87 Difference]: Start difference. First operand 2999 states and 3364 transitions. Second operand 7 states. [2020-10-27 18:15:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:49,288 INFO L93 Difference]: Finished difference Result 6025 states and 6798 transitions. [2020-10-27 18:15:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:15:49,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-27 18:15:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:49,304 INFO L225 Difference]: With dead ends: 6025 [2020-10-27 18:15:49,304 INFO L226 Difference]: Without dead ends: 3189 [2020-10-27 18:15:49,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:15:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-10-27 18:15:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3001. [2020-10-27 18:15:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3001 states. [2020-10-27 18:15:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3363 transitions. [2020-10-27 18:15:49,403 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3363 transitions. Word has length 506 [2020-10-27 18:15:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:49,404 INFO L481 AbstractCegarLoop]: Abstraction has 3001 states and 3363 transitions. [2020-10-27 18:15:49,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:15:49,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3363 transitions. [2020-10-27 18:15:49,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-27 18:15:49,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:49,413 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:49,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:15:49,414 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:49,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1761648586, now seen corresponding path program 1 times [2020-10-27 18:15:49,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:49,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497049291] [2020-10-27 18:15:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:49,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:54,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:54,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-27 18:15:54,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:15:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 18:15:54,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 427 [2020-10-27 18:15:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 18:15:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:54,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:54,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:15:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:15:54,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 18:15:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:54,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-27 18:15:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:54,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:54,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:54,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:15:54,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:15:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 18:15:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-27 18:15:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:55,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:55,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:55,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:15:55,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:15:55,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 18:15:55,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:55,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:15:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:15:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-27 18:15:55,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497049291] [2020-10-27 18:15:55,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:55,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:15:55,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141914347] [2020-10-27 18:15:55,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:15:55,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:55,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:15:55,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:15:55,375 INFO L87 Difference]: Start difference. First operand 3001 states and 3363 transitions. Second operand 7 states. [2020-10-27 18:15:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:57,018 INFO L93 Difference]: Finished difference Result 5871 states and 6641 transitions. [2020-10-27 18:15:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:15:57,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-27 18:15:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:57,033 INFO L225 Difference]: With dead ends: 5871 [2020-10-27 18:15:57,033 INFO L226 Difference]: Without dead ends: 3031 [2020-10-27 18:15:57,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:15:57,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2020-10-27 18:15:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2999. [2020-10-27 18:15:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-10-27 18:15:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3354 transitions. [2020-10-27 18:15:57,121 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3354 transitions. Word has length 513 [2020-10-27 18:15:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:57,122 INFO L481 AbstractCegarLoop]: Abstraction has 2999 states and 3354 transitions. [2020-10-27 18:15:57,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:15:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3354 transitions. [2020-10-27 18:15:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-27 18:15:57,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:57,129 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:57,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:15:57,130 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:57,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1902797176, now seen corresponding path program 1 times [2020-10-27 18:15:57,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:57,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282161294] [2020-10-27 18:15:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:02,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:02,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-27 18:16:02,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:16:02,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 18:16:02,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-27 18:16:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:16:02,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:02,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:02,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:16:02,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 18:16:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 18:16:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:16:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-27 18:16:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:02,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:02,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:16:02,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 18:16:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:16:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-10-27 18:16:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:02,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:02,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:16:02,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:16:02,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:16:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 174 proven. 197 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-27 18:16:03,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282161294] [2020-10-27 18:16:03,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:03,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:16:03,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908309467] [2020-10-27 18:16:03,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:16:03,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:03,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:16:03,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:16:03,185 INFO L87 Difference]: Start difference. First operand 2999 states and 3354 transitions. Second operand 7 states. [2020-10-27 18:16:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:05,264 INFO L93 Difference]: Finished difference Result 6736 states and 7555 transitions. [2020-10-27 18:16:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:16:05,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 530 [2020-10-27 18:16:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:05,281 INFO L225 Difference]: With dead ends: 6736 [2020-10-27 18:16:05,281 INFO L226 Difference]: Without dead ends: 3743 [2020-10-27 18:16:05,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:16:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2020-10-27 18:16:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3741. [2020-10-27 18:16:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3741 states. [2020-10-27 18:16:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4087 transitions. [2020-10-27 18:16:05,391 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4087 transitions. Word has length 530 [2020-10-27 18:16:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:05,392 INFO L481 AbstractCegarLoop]: Abstraction has 3741 states and 4087 transitions. [2020-10-27 18:16:05,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:16:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4087 transitions. [2020-10-27 18:16:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2020-10-27 18:16:05,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:05,406 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:05,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:16:05,406 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:05,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1043246807, now seen corresponding path program 1 times [2020-10-27 18:16:05,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:05,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031996715] [2020-10-27 18:16:05,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:05,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:09,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:10,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:10,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 685 [2020-10-27 18:16:10,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:16:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 18:16:10,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:16:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-10-27 18:16:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-27 18:16:10,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:10,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:10,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:10,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:10,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:16:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:10,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:16:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 18:16:10,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:16:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-27 18:16:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:10,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:11,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:11,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:11,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:16:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-27 18:16:11,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:16:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:16:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:12,069 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-27 18:16:12,403 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-27 18:16:12,847 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-27 18:16:13,109 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-27 18:16:13,354 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-27 18:16:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-27 18:16:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-27 18:16:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:16:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:16:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:16:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 328 proven. 197 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2020-10-27 18:16:15,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031996715] [2020-10-27 18:16:15,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:15,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:16:15,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895144004] [2020-10-27 18:16:15,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:16:15,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:15,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:16:15,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:16:15,697 INFO L87 Difference]: Start difference. First operand 3741 states and 4087 transitions. Second operand 13 states. [2020-10-27 18:16:15,990 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-27 18:16:16,962 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2020-10-27 18:16:17,652 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-27 18:16:18,271 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2020-10-27 18:16:18,790 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-10-27 18:16:19,277 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2020-10-27 18:16:19,887 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 110 [2020-10-27 18:16:20,447 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 123 [2020-10-27 18:16:20,995 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-27 18:16:22,001 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2020-10-27 18:16:22,939 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-27 18:16:23,365 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 93 [2020-10-27 18:16:23,815 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-10-27 18:16:24,346 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2020-10-27 18:16:24,843 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 92 [2020-10-27 18:16:25,452 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2020-10-27 18:16:25,902 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-10-27 18:16:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:26,082 INFO L93 Difference]: Finished difference Result 7298 states and 8008 transitions. [2020-10-27 18:16:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 18:16:26,086 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 665 [2020-10-27 18:16:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:26,100 INFO L225 Difference]: With dead ends: 7298 [2020-10-27 18:16:26,100 INFO L226 Difference]: Without dead ends: 3918 [2020-10-27 18:16:26,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2020-10-27 18:16:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2020-10-27 18:16:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3914. [2020-10-27 18:16:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3914 states. [2020-10-27 18:16:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 4264 transitions. [2020-10-27 18:16:26,201 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 4264 transitions. Word has length 665 [2020-10-27 18:16:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:26,202 INFO L481 AbstractCegarLoop]: Abstraction has 3914 states and 4264 transitions. [2020-10-27 18:16:26,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:16:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 4264 transitions. [2020-10-27 18:16:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-27 18:16:26,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:26,218 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:16:26,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:16:26,218 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1961172531, now seen corresponding path program 1 times [2020-10-27 18:16:26,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:26,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446132564] [2020-10-27 18:16:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 703 [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:16:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:31,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:16:31,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:31,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:16:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 18:16:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:16:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:16:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-27 18:16:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:16:31,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:16:31,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:16:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:31,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2020-10-27 18:16:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:32,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:32,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:16:32,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:16:32,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:16:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 346 proven. 197 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2020-10-27 18:16:32,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446132564] [2020-10-27 18:16:32,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:32,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:16:32,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012455532] [2020-10-27 18:16:32,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:16:32,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:32,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:16:32,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:16:32,332 INFO L87 Difference]: Start difference. First operand 3914 states and 4264 transitions. Second operand 7 states. [2020-10-27 18:16:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:34,375 INFO L93 Difference]: Finished difference Result 8558 states and 9454 transitions. [2020-10-27 18:16:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:16:34,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 683 [2020-10-27 18:16:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:34,394 INFO L225 Difference]: With dead ends: 8558 [2020-10-27 18:16:34,395 INFO L226 Difference]: Without dead ends: 5016 [2020-10-27 18:16:34,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:16:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5016 states. [2020-10-27 18:16:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5016 to 4834. [2020-10-27 18:16:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4834 states. [2020-10-27 18:16:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 5345 transitions. [2020-10-27 18:16:34,518 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 5345 transitions. Word has length 683 [2020-10-27 18:16:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:34,518 INFO L481 AbstractCegarLoop]: Abstraction has 4834 states and 5345 transitions. [2020-10-27 18:16:34,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:16:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 5345 transitions. [2020-10-27 18:16:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2020-10-27 18:16:34,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:34,532 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:16:34,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:16:34,534 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:34,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:34,534 INFO L82 PathProgramCache]: Analyzing trace with hash -97079918, now seen corresponding path program 1 times [2020-10-27 18:16:34,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:34,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064937964] [2020-10-27 18:16:34,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:34,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:39,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:39,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 781 [2020-10-27 18:16:39,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:16:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 18:16:39,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 18:16:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:16:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:39,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:39,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:39,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:16:39,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:39,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:16:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 18:16:39,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:16:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:16:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 18:16:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:16:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:40,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:16:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:40,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:40,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-27 18:16:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:40,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:40,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-27 18:16:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:40,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 176 proven. 444 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2020-10-27 18:16:40,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064937964] [2020-10-27 18:16:40,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:40,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:16:40,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628895672] [2020-10-27 18:16:40,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:16:40,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:40,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:16:40,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:16:40,930 INFO L87 Difference]: Start difference. First operand 4834 states and 5345 transitions. Second operand 7 states. [2020-10-27 18:16:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:42,716 INFO L93 Difference]: Finished difference Result 9482 states and 10574 transitions. [2020-10-27 18:16:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:16:42,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 759 [2020-10-27 18:16:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:42,731 INFO L225 Difference]: With dead ends: 9482 [2020-10-27 18:16:42,731 INFO L226 Difference]: Without dead ends: 5020 [2020-10-27 18:16:42,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:16:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2020-10-27 18:16:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 5020. [2020-10-27 18:16:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5020 states. [2020-10-27 18:16:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 5504 transitions. [2020-10-27 18:16:42,851 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 5504 transitions. Word has length 759 [2020-10-27 18:16:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:42,852 INFO L481 AbstractCegarLoop]: Abstraction has 5020 states and 5504 transitions. [2020-10-27 18:16:42,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:16:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 5504 transitions. [2020-10-27 18:16:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-27 18:16:42,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:42,867 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:16:42,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:16:42,867 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:42,868 INFO L82 PathProgramCache]: Analyzing trace with hash -96380181, now seen corresponding path program 1 times [2020-10-27 18:16:42,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:42,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24319862] [2020-10-27 18:16:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:47,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 917 [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 18:16:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:48,177 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-27 18:16:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:48,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:48,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:48,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:16:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:16:48,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:16:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:48,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:48,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:16:48,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 18:16:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 18:16:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-27 18:16:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:48,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:48,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:16:48,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:16:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-27 18:16:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:16:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 18:16:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-27 18:16:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:50,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:50,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:16:50,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:50,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:16:50,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 18:16:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 18:16:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:50,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:50,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:50,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:16:50,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 18:16:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-27 18:16:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:50,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:50,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 801 [2020-10-27 18:16:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:50,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:50,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:16:50,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:16:50,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:16:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 337 proven. 444 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2020-10-27 18:16:52,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24319862] [2020-10-27 18:16:52,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:52,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:16:52,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132929557] [2020-10-27 18:16:52,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:16:52,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:16:52,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:16:52,211 INFO L87 Difference]: Start difference. First operand 5020 states and 5504 transitions. Second operand 13 states. [2020-10-27 18:16:53,142 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-27 18:16:53,482 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-10-27 18:16:53,916 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-27 18:16:54,267 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-10-27 18:16:54,644 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-27 18:16:55,052 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-27 18:16:55,421 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2020-10-27 18:16:56,668 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-27 18:16:56,997 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-10-27 18:16:57,508 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-27 18:16:57,911 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2020-10-27 18:16:58,328 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-27 18:16:58,735 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2020-10-27 18:16:59,055 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-27 18:16:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:59,479 INFO L93 Difference]: Finished difference Result 9852 states and 10823 transitions. [2020-10-27 18:16:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 18:16:59,480 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 893 [2020-10-27 18:16:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:59,493 INFO L225 Difference]: With dead ends: 9852 [2020-10-27 18:16:59,493 INFO L226 Difference]: Without dead ends: 5008 [2020-10-27 18:16:59,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2020-10-27 18:16:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5008 states. [2020-10-27 18:16:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5008 to 4826. [2020-10-27 18:16:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4826 states. [2020-10-27 18:16:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 5262 transitions. [2020-10-27 18:16:59,614 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 5262 transitions. Word has length 893 [2020-10-27 18:16:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:59,614 INFO L481 AbstractCegarLoop]: Abstraction has 4826 states and 5262 transitions. [2020-10-27 18:16:59,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:16:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 5262 transitions. [2020-10-27 18:16:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-27 18:16:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:59,629 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:59,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:16:59,629 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:59,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:59,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1631489138, now seen corresponding path program 1 times [2020-10-27 18:16:59,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:59,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848163150] [2020-10-27 18:16:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:04,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:04,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-27 18:17:04,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:17:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-27 18:17:04,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:17:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-27 18:17:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 18:17:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:05,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:05,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:17:05,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:05,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:05,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:05,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:05,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:17:05,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:05,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:05,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:17:05,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:17:05,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:05,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:05,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:17:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:05,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:05,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:05,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:17:05,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:17:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-27 18:17:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:17:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-27 18:17:06,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 18:17:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-27 18:17:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:06,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:06,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:06,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:17:06,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 18:17:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-10-27 18:17:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:06,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:06,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:06,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:06,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:17:06,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 18:17:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:06,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2020-10-27 18:17:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:17:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:17:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:17:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 887 [2020-10-27 18:17:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:17:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:17:06,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:17:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2830 backedges. 450 proven. 444 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2020-10-27 18:17:06,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848163150] [2020-10-27 18:17:06,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:06,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:17:06,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759395034] [2020-10-27 18:17:06,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:17:06,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:06,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:17:06,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:17:06,961 INFO L87 Difference]: Start difference. First operand 4826 states and 5262 transitions. Second operand 8 states. [2020-10-27 18:17:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:09,476 INFO L93 Difference]: Finished difference Result 9466 states and 10339 transitions. [2020-10-27 18:17:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:17:09,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 979 [2020-10-27 18:17:09,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:09,493 INFO L225 Difference]: With dead ends: 9466 [2020-10-27 18:17:09,493 INFO L226 Difference]: Without dead ends: 5012 [2020-10-27 18:17:09,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:17:09,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2020-10-27 18:17:09,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 4826. [2020-10-27 18:17:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4826 states. [2020-10-27 18:17:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 5262 transitions. [2020-10-27 18:17:09,607 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 5262 transitions. Word has length 979 [2020-10-27 18:17:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:09,608 INFO L481 AbstractCegarLoop]: Abstraction has 4826 states and 5262 transitions. [2020-10-27 18:17:09,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:17:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 5262 transitions. [2020-10-27 18:17:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-27 18:17:09,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:09,624 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:17:09,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 18:17:09,624 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:09,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:09,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1011334915, now seen corresponding path program 1 times [2020-10-27 18:17:09,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:09,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370106084] [2020-10-27 18:17:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-27 18:17:14,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:17:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4250 [2020-10-27 18:17:14,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 991 [2020-10-27 18:17:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:17:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:14,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:17:14,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:17:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:17:14,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:17:14,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:17:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:17:14,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:17:14,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:17:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-27 18:17:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:14,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:17:14,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-27 18:17:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:14,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:17:14,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-27 18:17:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:14,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:17:14,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:14,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:14,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-27 18:17:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:17:14,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:17:14,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:17:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-27 18:17:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:14,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:17:14,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:17:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:17:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3503 backedges. 747 proven. 2 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2020-10-27 18:17:16,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370106084] [2020-10-27 18:17:16,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:16,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:17:16,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504300671] [2020-10-27 18:17:16,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:17:16,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:16,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:17:16,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:17:16,089 INFO L87 Difference]: Start difference. First operand 4826 states and 5262 transitions. Second operand 7 states. [2020-10-27 18:17:18,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:18,228 INFO L93 Difference]: Finished difference Result 9648 states and 10545 transitions. [2020-10-27 18:17:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:17:18,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1067 [2020-10-27 18:17:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:18,248 INFO L225 Difference]: With dead ends: 9648 [2020-10-27 18:17:18,248 INFO L226 Difference]: Without dead ends: 5012 [2020-10-27 18:17:18,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:17:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2020-10-27 18:17:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5008. [2020-10-27 18:17:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5008 states. [2020-10-27 18:17:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 5446 transitions. [2020-10-27 18:17:18,357 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 5446 transitions. Word has length 1067 [2020-10-27 18:17:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:18,358 INFO L481 AbstractCegarLoop]: Abstraction has 5008 states and 5446 transitions. [2020-10-27 18:17:18,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:17:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 5446 transitions. [2020-10-27 18:17:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-27 18:17:18,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:18,375 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:17:18,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 18:17:18,375 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:18,376 INFO L82 PathProgramCache]: Analyzing trace with hash -560577385, now seen corresponding path program 1 times [2020-10-27 18:17:18,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:18,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496914308] [2020-10-27 18:17:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1104 [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1000 [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:17:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:23,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:23,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:17:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:23,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:23,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:17:23,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:17:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:17:23,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:17:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:17:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:17:23,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:17:23,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-27 18:17:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-27 18:17:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:23,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-27 18:17:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:24,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:24,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:24,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:17:24,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-27 18:17:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:24,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 18:17:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 984 [2020-10-27 18:17:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:24,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:17:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3521 backedges. 747 proven. 2 refuted. 0 times theorem prover too weak. 2772 trivial. 0 not checked. [2020-10-27 18:17:25,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496914308] [2020-10-27 18:17:25,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:25,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:17:25,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938257632] [2020-10-27 18:17:25,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:17:25,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:25,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:17:25,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:17:25,038 INFO L87 Difference]: Start difference. First operand 5008 states and 5446 transitions. Second operand 7 states. [2020-10-27 18:17:26,990 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:17:27,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:27,115 INFO L93 Difference]: Finished difference Result 10008 states and 10912 transitions. [2020-10-27 18:17:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:17:27,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1076 [2020-10-27 18:17:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:27,128 INFO L225 Difference]: With dead ends: 10008 [2020-10-27 18:17:27,129 INFO L226 Difference]: Without dead ends: 4833 [2020-10-27 18:17:27,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:17:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2020-10-27 18:17:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4833. [2020-10-27 18:17:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4833 states. [2020-10-27 18:17:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 5255 transitions. [2020-10-27 18:17:27,231 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 5255 transitions. Word has length 1076 [2020-10-27 18:17:27,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:27,232 INFO L481 AbstractCegarLoop]: Abstraction has 4833 states and 5255 transitions. [2020-10-27 18:17:27,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:17:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 5255 transitions. [2020-10-27 18:17:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2020-10-27 18:17:27,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:27,247 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:17:27,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 18:17:27,248 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:27,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1412002390, now seen corresponding path program 1 times [2020-10-27 18:17:27,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:27,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005626529] [2020-10-27 18:17:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:27,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1132 [2020-10-27 18:17:32,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:17:32,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-27 18:17:32,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1028 [2020-10-27 18:17:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:17:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:32,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:32,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:17:32,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:32,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:17:32,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:32,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:17:32,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:17:32,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:17:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:17:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:17:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:17:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:17:32,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:17:32,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-27 18:17:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:32,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:32,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:17:32,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:32,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:32,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-27 18:17:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:32,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-27 18:17:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:33,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:33,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:33,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:17:33,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-27 18:17:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 936 [2020-10-27 18:17:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:33,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:33,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:17:33,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:17:33,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:17:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1010 [2020-10-27 18:17:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:17:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3995 backedges. 828 proven. 2 refuted. 0 times theorem prover too weak. 3165 trivial. 0 not checked. [2020-10-27 18:17:34,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005626529] [2020-10-27 18:17:34,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:34,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:17:34,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609968688] [2020-10-27 18:17:34,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:17:34,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:34,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:17:34,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:17:34,107 INFO L87 Difference]: Start difference. First operand 4833 states and 5255 transitions. Second operand 7 states. [2020-10-27 18:17:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:36,171 INFO L93 Difference]: Finished difference Result 10234 states and 11223 transitions. [2020-10-27 18:17:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:17:36,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1102 [2020-10-27 18:17:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:36,190 INFO L225 Difference]: With dead ends: 10234 [2020-10-27 18:17:36,190 INFO L226 Difference]: Without dead ends: 4667 [2020-10-27 18:17:36,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:17:36,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2020-10-27 18:17:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4461. [2020-10-27 18:17:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4461 states. [2020-10-27 18:17:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 4759 transitions. [2020-10-27 18:17:36,293 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 4759 transitions. Word has length 1102 [2020-10-27 18:17:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:36,294 INFO L481 AbstractCegarLoop]: Abstraction has 4461 states and 4759 transitions. [2020-10-27 18:17:36,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:17:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 4759 transitions. [2020-10-27 18:17:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-27 18:17:36,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:36,312 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:17:36,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 18:17:36,312 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:36,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2071202183, now seen corresponding path program 1 times [2020-10-27 18:17:36,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:36,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275958137] [2020-10-27 18:17:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1157 [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 364 [2020-10-27 18:17:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:41,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:17:41,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:41,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:17:41,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:17:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:17:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:41,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:17:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-27 18:17:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:41,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:17:41,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-27 18:17:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:42,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:42,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:42,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:42,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:17:42,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:17:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:42,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-27 18:17:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:42,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:42,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:42,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:42,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 18:17:42,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:17:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:17:42,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:42,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-27 18:17:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:42,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:42,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 18:17:42,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 18:17:42,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 18:17:42,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:42,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1037 [2020-10-27 18:17:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3623 backedges. 1452 proven. 336 refuted. 0 times theorem prover too weak. 1835 trivial. 0 not checked. [2020-10-27 18:17:43,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275958137] [2020-10-27 18:17:43,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:43,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:17:43,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322136069] [2020-10-27 18:17:43,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:17:43,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:43,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:17:43,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:17:43,378 INFO L87 Difference]: Start difference. First operand 4461 states and 4759 transitions. Second operand 10 states. [2020-10-27 18:17:46,255 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:17:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:46,851 INFO L93 Difference]: Finished difference Result 10212 states and 10979 transitions. [2020-10-27 18:17:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 18:17:46,856 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1129 [2020-10-27 18:17:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:46,872 INFO L225 Difference]: With dead ends: 10212 [2020-10-27 18:17:46,873 INFO L226 Difference]: Without dead ends: 5941 [2020-10-27 18:17:46,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-27 18:17:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2020-10-27 18:17:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5753. [2020-10-27 18:17:47,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5753 states. [2020-10-27 18:17:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 6208 transitions. [2020-10-27 18:17:47,024 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 6208 transitions. Word has length 1129 [2020-10-27 18:17:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:47,025 INFO L481 AbstractCegarLoop]: Abstraction has 5753 states and 6208 transitions. [2020-10-27 18:17:47,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:17:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 6208 transitions. [2020-10-27 18:17:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2020-10-27 18:17:47,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:47,057 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-27 18:17:47,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 18:17:47,057 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash -706318619, now seen corresponding path program 1 times [2020-10-27 18:17:47,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:47,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295586337] [2020-10-27 18:17:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1421 [2020-10-27 18:17:51,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:17:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4004 [2020-10-27 18:17:51,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1317 [2020-10-27 18:17:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:17:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:51,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:17:51,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:17:51,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:17:51,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:17:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:17:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:17:51,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:17:51,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-27 18:17:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-27 18:17:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:51,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:17:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-27 18:17:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-27 18:17:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-27 18:17:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:17:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:17:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-27 18:17:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-27 18:17:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-27 18:17:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:17:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5685 backedges. 935 proven. 2 refuted. 0 times theorem prover too weak. 4748 trivial. 0 not checked. [2020-10-27 18:17:53,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295586337] [2020-10-27 18:17:53,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:53,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:17:53,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946402394] [2020-10-27 18:17:53,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:17:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:53,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:17:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:17:53,307 INFO L87 Difference]: Start difference. First operand 5753 states and 6208 transitions. Second operand 7 states. [2020-10-27 18:17:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:56,161 INFO L93 Difference]: Finished difference Result 11860 states and 12796 transitions. [2020-10-27 18:17:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:17:56,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1389 [2020-10-27 18:17:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:56,180 INFO L225 Difference]: With dead ends: 11860 [2020-10-27 18:17:56,180 INFO L226 Difference]: Without dead ends: 6297 [2020-10-27 18:17:56,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:17:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6297 states. [2020-10-27 18:17:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6297 to 5931. [2020-10-27 18:17:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5931 states. [2020-10-27 18:17:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 6330 transitions. [2020-10-27 18:17:56,303 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 6330 transitions. Word has length 1389 [2020-10-27 18:17:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:56,305 INFO L481 AbstractCegarLoop]: Abstraction has 5931 states and 6330 transitions. [2020-10-27 18:17:56,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:17:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 6330 transitions. [2020-10-27 18:17:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1606 [2020-10-27 18:17:56,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:56,343 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:17:56,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 18:17:56,343 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:56,345 INFO L82 PathProgramCache]: Analyzing trace with hash 178739153, now seen corresponding path program 1 times [2020-10-27 18:17:56,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:56,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590383657] [2020-10-27 18:17:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:01,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:01,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1641 [2020-10-27 18:18:01,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:18:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 18:18:01,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1537 [2020-10-27 18:18:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:18:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:18:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:18:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:01,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:18:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:01,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:18:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:18:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:18:02,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:18:02,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-27 18:18:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:18:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:18:02,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-27 18:18:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-27 18:18:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:18:02,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:18:02,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-27 18:18:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:18:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:18:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-27 18:18:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:18:02,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:18:02,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-27 18:18:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:18:02,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:18:02,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-27 18:18:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:18:02,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:18:02,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-27 18:18:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:18:02,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:18:02,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:18:02,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:02,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:18:02,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1513 [2020-10-27 18:18:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:02,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:02,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:18:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:18:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:18:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:18:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0