/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/reducercommutativity/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:44:05,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:44:05,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:44:05,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:44:05,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:44:05,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:44:05,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:44:05,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:44:05,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:44:05,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:44:05,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:44:05,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:44:05,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:44:05,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:44:05,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:44:05,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:44:05,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:44:05,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:44:05,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:44:05,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:44:05,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:44:05,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:44:05,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:44:05,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:44:05,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:44:05,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:44:05,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:44:05,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:44:05,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:44:05,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:44:05,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:44:05,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:44:05,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:44:05,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:44:05,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:44:05,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:44:05,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:44:05,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:44:05,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:44:05,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:44:05,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:44:05,289 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 22:44:05,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:44:05,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:44:05,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:44:05,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:44:05,363 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:44:05,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:44:05,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:44:05,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:44:05,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:44:05,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:44:05,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:44:05,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:44:05,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:44:05,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:44:05,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:44:05,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:44:05,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:44:05,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:44:05,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:44:05,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:44:05,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:44:05,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:44:05,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:44:05,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:44:05,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:44:05,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:44:05,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:44:05,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:44:05,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:44:05,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:44:05,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:44:05,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:44:05,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:44:05,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:44:05,863 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:44:05,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-27 22:44:05,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3891623c3/e61a6d31421c4e389708437685d8d596/FLAGbc692ff12 [2020-10-27 22:44:06,681 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:44:06,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-27 22:44:06,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3891623c3/e61a6d31421c4e389708437685d8d596/FLAGbc692ff12 [2020-10-27 22:44:07,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3891623c3/e61a6d31421c4e389708437685d8d596 [2020-10-27 22:44:07,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:44:07,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:44:07,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:44:07,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:44:07,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:44:07,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3105449a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07, skipping insertion in model container [2020-10-27 22:44:07,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:44:07,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:44:07,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:44:07,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:44:07,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:44:07,405 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:44:07,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07 WrapperNode [2020-10-27 22:44:07,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:44:07,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:44:07,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:44:07,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:44:07,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (1/1) ... [2020-10-27 22:44:07,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:44:07,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:44:07,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:44:07,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:44:07,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (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 22:44:07,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:44:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:44:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:44:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-27 22:44:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:44:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:44:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:44:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 22:44:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 22:44:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:44:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:44:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:44:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-27 22:44:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:44:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:44:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:44:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:44:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:44:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:44:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:44:08,004 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:44:08,005 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 22:44:08,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:44:08 BoogieIcfgContainer [2020-10-27 22:44:08,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:44:08,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:44:08,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:44:08,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:44:08,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:44:07" (1/3) ... [2020-10-27 22:44:08,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cdb651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:44:08, skipping insertion in model container [2020-10-27 22:44:08,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:07" (2/3) ... [2020-10-27 22:44:08,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cdb651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:44:08, skipping insertion in model container [2020-10-27 22:44:08,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:44:08" (3/3) ... [2020-10-27 22:44:08,016 INFO L111 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2020-10-27 22:44:08,031 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:44:08,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:44:08,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:44:08,083 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:44:08,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:44:08,086 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:44:08,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:44:08,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:44:08,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:44:08,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:44:08,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:44:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 22:44:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:44:08,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:08,116 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 22:44:08,116 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-27 22:44:08,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:08,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548546097] [2020-10-27 22:44:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:44:10,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:44:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-10-27 22:44:10,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:44:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:44:10,220 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-27 22:44:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:10,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:44:10,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:10,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:44:10,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:44:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:10,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:44:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:44:10,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:44:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:44:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:44:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:10,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:44:10,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:44:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:44:10,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548546097] [2020-10-27 22:44:10,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:44:10,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:44:10,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427391041] [2020-10-27 22:44:10,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:44:10,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:10,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:44:10,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:44:10,392 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 22:44:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:10,552 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-27 22:44:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:44:10,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 22:44:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:10,563 INFO L225 Difference]: With dead ends: 62 [2020-10-27 22:44:10,564 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 22:44:10,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:44:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 22:44:10,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 22:44:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 22:44:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 22:44:10,618 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-27 22:44:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:10,619 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 22:44:10,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:44:10,619 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 22:44:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:44:10,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:10,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 22:44:10,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:44:10,622 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:10,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times [2020-10-27 22:44:10,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:10,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732321556] [2020-10-27 22:44:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:11,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:44:12,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:44:12,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-27 22:44:12,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:12,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:44:12,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:12,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:12,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:12,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:12,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:12,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:44:12,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:12,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:44:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:12,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:12,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:44:12,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:12,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:12,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:44:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:44:12,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:12,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:44:12,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:44:12,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732321556] [2020-10-27 22:44:12,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:44:12,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:44:12,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042155728] [2020-10-27 22:44:12,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:44:12,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:12,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:44:12,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:44:12,472 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-27 22:44:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:12,627 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-10-27 22:44:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:44:12,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 22:44:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:12,629 INFO L225 Difference]: With dead ends: 52 [2020-10-27 22:44:12,629 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 22:44:12,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:44:12,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 22:44:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 22:44:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 22:44:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-27 22:44:12,641 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-27 22:44:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:12,641 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-27 22:44:12,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:44:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-27 22:44:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 22:44:12,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:12,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 22:44:12,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:44:12,644 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:12,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:12,645 INFO L82 PathProgramCache]: Analyzing trace with hash 208370082, now seen corresponding path program 1 times [2020-10-27 22:44:12,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:12,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445497285] [2020-10-27 22:44:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:14,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:17,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:44:17,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:44:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:44:17,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 22:44:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:17,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:17,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:17,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:17,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:44:17,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:17,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:44:17,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 22:44:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:17,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:44:17,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 22:44:17,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:17,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:17,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:17,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:44:17,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 22:44:17,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:44:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 22:44:17,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445497285] [2020-10-27 22:44:17,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:17,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 22:44:17,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270339924] [2020-10-27 22:44:17,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:44:17,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:17,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:44:17,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:44:17,873 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-27 22:44:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:18,077 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2020-10-27 22:44:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:44:18,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-27 22:44:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:18,079 INFO L225 Difference]: With dead ends: 56 [2020-10-27 22:44:18,079 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 22:44:18,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:44:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 22:44:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-27 22:44:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 22:44:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-27 22:44:18,089 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 43 [2020-10-27 22:44:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:18,089 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-27 22:44:18,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:44:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-27 22:44:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 22:44:18,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:18,093 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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 22:44:18,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:44:18,094 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:18,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:18,095 INFO L82 PathProgramCache]: Analyzing trace with hash 811940529, now seen corresponding path program 2 times [2020-10-27 22:44:18,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:18,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473404946] [2020-10-27 22:44:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:44:23,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:23,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 22:44:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:44:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:23,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 22:44:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:44:23,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 22:44:23,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:23,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:44:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:44:23,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 22:44:23,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:44:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:44:23,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 22:44:23,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 22:44:23,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473404946] [2020-10-27 22:44:23,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:23,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 22:44:23,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161354457] [2020-10-27 22:44:23,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:44:23,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:23,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:44:23,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:44:23,466 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-27 22:44:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:23,762 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-10-27 22:44:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:44:23,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-27 22:44:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:23,764 INFO L225 Difference]: With dead ends: 62 [2020-10-27 22:44:23,764 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 22:44:23,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:44:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 22:44:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-27 22:44:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 22:44:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-27 22:44:23,774 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 52 [2020-10-27 22:44:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:23,774 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-27 22:44:23,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:44:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-27 22:44:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 22:44:23,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:23,776 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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 22:44:23,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:44:23,777 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash -610286718, now seen corresponding path program 3 times [2020-10-27 22:44:23,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:23,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980267638] [2020-10-27 22:44:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:28,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:28,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 22:44:28,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:28,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 22:44:28,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:44:28,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:28,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:28,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:28,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:44:28,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:28,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:28,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:28,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:44:28,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 22:44:28,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:44:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:29,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:44:29,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 22:44:29,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:44:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:44:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:44:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:44:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 22:44:29,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980267638] [2020-10-27 22:44:29,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:29,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:44:29,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656245109] [2020-10-27 22:44:29,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:44:29,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:29,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:44:29,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:44:29,203 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 7 states. [2020-10-27 22:44:29,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:29,500 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2020-10-27 22:44:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:44:29,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-27 22:44:29,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:29,502 INFO L225 Difference]: With dead ends: 68 [2020-10-27 22:44:29,502 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 22:44:29,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:44:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 22:44:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-27 22:44:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 22:44:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-27 22:44:29,511 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 61 [2020-10-27 22:44:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:29,511 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-27 22:44:29,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:44:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-27 22:44:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:44:29,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:29,513 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 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 22:44:29,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:44:29,514 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:29,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1355680303, now seen corresponding path program 4 times [2020-10-27 22:44:29,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:29,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351061498] [2020-10-27 22:44:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:34,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:34,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 22:44:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:44:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 22:44:34,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:44:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:34,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:34,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:34,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:34,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:34,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:34,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:44:34,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 22:44:34,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:34,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 22:44:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:34,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:44:34,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 22:44:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:44:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:34,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:34,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:44:34,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:34,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 22:44:34,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:44:34,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 22:44:34,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351061498] [2020-10-27 22:44:34,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:34,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:44:34,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391081093] [2020-10-27 22:44:34,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:44:34,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:34,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:44:34,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:44:34,977 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 8 states. [2020-10-27 22:44:35,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:35,328 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2020-10-27 22:44:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:44:35,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-27 22:44:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:35,331 INFO L225 Difference]: With dead ends: 74 [2020-10-27 22:44:35,331 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 22:44:35,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:44:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 22:44:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 22:44:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 22:44:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-27 22:44:35,344 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 70 [2020-10-27 22:44:35,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:35,344 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-27 22:44:35,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:44:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-27 22:44:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 22:44:35,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:35,349 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 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 22:44:35,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:44:35,349 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:35,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:35,350 INFO L82 PathProgramCache]: Analyzing trace with hash 999380322, now seen corresponding path program 5 times [2020-10-27 22:44:35,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:35,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63494397] [2020-10-27 22:44:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:44:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 22:44:40,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:44:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:44:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:44:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:40,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:40,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:40,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:40,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:40,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 22:44:40,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:44:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:44:40,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:40,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:40,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 22:44:40,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:44:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:44:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:40,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:44:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:40,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:40,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 22:44:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:44:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 35 proven. 283 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 22:44:40,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63494397] [2020-10-27 22:44:40,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:40,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:44:40,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763152963] [2020-10-27 22:44:40,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:44:40,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:40,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:44:40,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:44:40,985 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 10 states. [2020-10-27 22:44:41,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:41,386 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2020-10-27 22:44:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:44:41,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-27 22:44:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:41,388 INFO L225 Difference]: With dead ends: 82 [2020-10-27 22:44:41,388 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 22:44:41,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:44:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 22:44:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-27 22:44:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 22:44:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-10-27 22:44:41,397 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 79 [2020-10-27 22:44:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:41,398 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-10-27 22:44:41,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:44:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-10-27 22:44:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:44:41,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:41,400 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 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 22:44:41,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:44:41,400 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:41,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1278760913, now seen corresponding path program 1 times [2020-10-27 22:44:41,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:41,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452939661] [2020-10-27 22:44:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:46,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:46,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 22:44:46,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:44:46,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:44:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 22:44:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:44:46,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:46,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:46,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:46,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:46,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:44:46,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:46,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:46,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:46,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:44:46,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 22:44:46,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:44:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:44:46,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:46,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:44:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:46,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:46,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:44:46,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:46,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 22:44:46,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:44:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:44:46,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:44:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:47,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:47,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:44:47,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 22:44:47,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:44:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 51 proven. 402 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 22:44:47,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452939661] [2020-10-27 22:44:47,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:47,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:44:47,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103532146] [2020-10-27 22:44:47,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:44:47,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:47,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:44:47,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:44:47,100 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 12 states. [2020-10-27 22:44:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:47,614 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-10-27 22:44:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:44:47,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-10-27 22:44:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:47,616 INFO L225 Difference]: With dead ends: 91 [2020-10-27 22:44:47,616 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 22:44:47,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:44:47,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 22:44:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-27 22:44:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 22:44:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-27 22:44:47,626 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 90 [2020-10-27 22:44:47,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:47,627 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-27 22:44:47,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:44:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-27 22:44:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 22:44:47,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:47,628 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 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] [2020-10-27 22:44:47,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:44:47,628 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:47,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1656216006, now seen corresponding path program 2 times [2020-10-27 22:44:47,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:47,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221044730] [2020-10-27 22:44:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:47,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:47,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:52,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:52,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:44:52,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 22:44:52,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:44:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 22:44:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:44:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:52,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:52,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:52,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:52,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:52,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:52,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:44:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 22:44:52,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:44:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:44:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:53,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:44:53,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 22:44:53,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:44:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:53,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:44:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 70 proven. 544 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 22:44:53,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221044730] [2020-10-27 22:44:53,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:53,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 22:44:53,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354421929] [2020-10-27 22:44:53,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:44:53,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:44:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:44:53,445 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 14 states. [2020-10-27 22:44:53,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:53,968 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2020-10-27 22:44:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:44:53,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-10-27 22:44:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:53,977 INFO L225 Difference]: With dead ends: 101 [2020-10-27 22:44:53,977 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 22:44:53,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:44:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 22:44:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-27 22:44:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 22:44:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-27 22:44:53,990 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 101 [2020-10-27 22:44:53,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:53,990 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-27 22:44:53,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:44:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-27 22:44:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:44:53,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:53,992 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 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 22:44:53,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:44:53,992 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1794373579, now seen corresponding path program 3 times [2020-10-27 22:44:53,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:53,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897561942] [2020-10-27 22:44:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:59,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 22:44:59,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:59,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 22:44:59,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 22:44:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:44:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:59,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:59,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:44:59,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:44:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 22:44:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:44:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:44:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:44:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:59,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:44:59,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 22:44:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:44:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:44:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:59,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:44:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:59,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:44:59,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:59,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 22:44:59,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:59,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 22:44:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 92 proven. 709 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 22:44:59,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897561942] [2020-10-27 22:44:59,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:59,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:44:59,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609548405] [2020-10-27 22:44:59,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:44:59,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:59,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:44:59,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:44:59,841 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 16 states. [2020-10-27 22:45:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:00,442 INFO L93 Difference]: Finished difference Result 111 states and 140 transitions. [2020-10-27 22:45:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:45:00,443 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 112 [2020-10-27 22:45:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:00,444 INFO L225 Difference]: With dead ends: 111 [2020-10-27 22:45:00,444 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 22:45:00,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:45:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 22:45:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-27 22:45:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 22:45:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-27 22:45:00,460 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 112 [2020-10-27 22:45:00,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:00,463 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-27 22:45:00,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:45:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-27 22:45:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 22:45:00,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:00,465 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 4, 4, 3, 3, 3, 3, 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 22:45:00,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:45:00,465 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:00,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1303618006, now seen corresponding path program 4 times [2020-10-27 22:45:00,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:00,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306835813] [2020-10-27 22:45:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:05,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:05,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 22:45:05,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:45:05,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:45:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 22:45:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:45:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:05,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:05,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:05,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:05,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:05,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:06,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:06,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 22:45:06,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 22:45:06,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:45:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:45:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:45:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:06,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:06,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 22:45:06,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:06,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 22:45:06,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:45:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:45:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:06,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 22:45:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 117 proven. 897 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-27 22:45:06,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306835813] [2020-10-27 22:45:06,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:06,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 22:45:06,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841393325] [2020-10-27 22:45:06,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 22:45:06,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:06,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 22:45:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:45:06,862 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 18 states. [2020-10-27 22:45:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:07,478 INFO L93 Difference]: Finished difference Result 121 states and 152 transitions. [2020-10-27 22:45:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:45:07,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2020-10-27 22:45:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:07,480 INFO L225 Difference]: With dead ends: 121 [2020-10-27 22:45:07,480 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 22:45:07,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:45:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 22:45:07,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-27 22:45:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 22:45:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-10-27 22:45:07,494 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 123 [2020-10-27 22:45:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:07,496 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-10-27 22:45:07,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 22:45:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-10-27 22:45:07,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 22:45:07,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:07,501 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 5, 5, 3, 3, 3, 3, 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 22:45:07,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:45:07,501 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:07,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:07,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1981097831, now seen corresponding path program 5 times [2020-10-27 22:45:07,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:07,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390305719] [2020-10-27 22:45:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:45:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:12,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:12,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:12,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:45:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-27 22:45:13,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:45:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:45:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:45:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:13,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:13,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:45:13,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 22:45:13,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:45:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:45:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 22:45:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:13,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:13,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:45:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-27 22:45:13,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:45:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 145 proven. 1108 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-27 22:45:13,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390305719] [2020-10-27 22:45:13,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:13,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:45:13,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237918735] [2020-10-27 22:45:13,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:45:13,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:13,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:45:13,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:45:13,963 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 20 states. [2020-10-27 22:45:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:14,703 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2020-10-27 22:45:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 22:45:14,704 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 134 [2020-10-27 22:45:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:14,705 INFO L225 Difference]: With dead ends: 131 [2020-10-27 22:45:14,705 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 22:45:14,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-10-27 22:45:14,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 22:45:14,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-27 22:45:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 22:45:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2020-10-27 22:45:14,724 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 134 [2020-10-27 22:45:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:14,725 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2020-10-27 22:45:14,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:45:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2020-10-27 22:45:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 22:45:14,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:14,730 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 6, 6, 3, 3, 3, 3, 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 22:45:14,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:45:14,730 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:14,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1538859662, now seen corresponding path program 6 times [2020-10-27 22:45:14,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:14,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186628547] [2020-10-27 22:45:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:14,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:19,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:19,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 22:45:19,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 22:45:19,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:45:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 22:45:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:45:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:19,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:20,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:20,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:45:20,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 22:45:20,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:45:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:45:20,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:20,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:45:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:20,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:20,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:20,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:20,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:45:20,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-27 22:45:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:45:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:45:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 22:45:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:21,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:45:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-27 22:45:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 22:45:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:21,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 176 proven. 1342 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-27 22:45:21,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186628547] [2020-10-27 22:45:21,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:21,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:45:21,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79097594] [2020-10-27 22:45:21,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:45:21,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:21,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:45:21,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:45:21,097 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand 22 states. [2020-10-27 22:45:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:21,965 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2020-10-27 22:45:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 22:45:21,966 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-27 22:45:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:21,967 INFO L225 Difference]: With dead ends: 141 [2020-10-27 22:45:21,967 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 22:45:21,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:45:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 22:45:21,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-27 22:45:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 22:45:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2020-10-27 22:45:21,977 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 145 [2020-10-27 22:45:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:21,978 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2020-10-27 22:45:21,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:45:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2020-10-27 22:45:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 22:45:21,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:21,988 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 7, 7, 3, 3, 3, 3, 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 22:45:21,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:45:21,988 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:21,989 INFO L82 PathProgramCache]: Analyzing trace with hash 947975939, now seen corresponding path program 7 times [2020-10-27 22:45:21,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:21,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060175351] [2020-10-27 22:45:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:27,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:45:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:27,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:27,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:27,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:27,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:27,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:45:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:45:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:45:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:45:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:28,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:45:28,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:28,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 22:45:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:45:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 210 proven. 1599 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-27 22:45:28,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060175351] [2020-10-27 22:45:28,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:28,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 22:45:28,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095803651] [2020-10-27 22:45:28,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 22:45:28,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:28,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 22:45:28,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-27 22:45:28,585 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand 24 states. [2020-10-27 22:45:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:29,467 INFO L93 Difference]: Finished difference Result 151 states and 188 transitions. [2020-10-27 22:45:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 22:45:29,467 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 156 [2020-10-27 22:45:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:29,469 INFO L225 Difference]: With dead ends: 151 [2020-10-27 22:45:29,469 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 22:45:29,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=359, Invalid=973, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 22:45:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 22:45:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-27 22:45:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 22:45:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2020-10-27 22:45:29,477 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 156 [2020-10-27 22:45:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:29,478 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2020-10-27 22:45:29,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 22:45:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2020-10-27 22:45:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 22:45:29,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:29,480 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 8, 8, 3, 3, 3, 3, 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 22:45:29,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:45:29,480 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:29,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1075288334, now seen corresponding path program 8 times [2020-10-27 22:45:29,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:29,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878102730] [2020-10-27 22:45:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:34,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:34,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 22:45:34,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:45:34,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:45:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 22:45:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:45:34,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:34,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:34,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:34,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:45:34,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:34,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:35,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:35,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:45:35,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-27 22:45:35,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:45:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:45:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:45:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:35,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:45:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:35,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 22:45:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:45:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 247 proven. 1879 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-27 22:45:36,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878102730] [2020-10-27 22:45:36,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:36,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 22:45:36,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375700912] [2020-10-27 22:45:36,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 22:45:36,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:36,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 22:45:36,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:45:36,342 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand 26 states. [2020-10-27 22:45:37,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:37,356 INFO L93 Difference]: Finished difference Result 161 states and 200 transitions. [2020-10-27 22:45:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 22:45:37,357 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 167 [2020-10-27 22:45:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:37,358 INFO L225 Difference]: With dead ends: 161 [2020-10-27 22:45:37,358 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 22:45:37,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:45:37,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 22:45:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-10-27 22:45:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 22:45:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2020-10-27 22:45:37,368 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 167 [2020-10-27 22:45:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:37,368 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2020-10-27 22:45:37,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 22:45:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2020-10-27 22:45:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 22:45:37,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:37,371 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 9, 9, 3, 3, 3, 3, 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 22:45:37,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:45:37,371 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:37,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:37,372 INFO L82 PathProgramCache]: Analyzing trace with hash -200464737, now seen corresponding path program 9 times [2020-10-27 22:45:37,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:37,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392509359] [2020-10-27 22:45:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:42,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:42,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 22:45:42,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 22:45:42,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:45:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 22:45:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:45:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:42,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:42,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:42,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:43,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:45:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:43,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 22:45:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:43,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:43,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:43,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:45:43,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-27 22:45:43,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:43,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:45:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:45:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 22:45:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 287 proven. 2182 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-27 22:45:44,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392509359] [2020-10-27 22:45:44,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:44,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 22:45:44,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302822632] [2020-10-27 22:45:44,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 22:45:44,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 22:45:44,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:45:44,513 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 28 states. [2020-10-27 22:45:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:45,675 INFO L93 Difference]: Finished difference Result 171 states and 212 transitions. [2020-10-27 22:45:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 22:45:45,676 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 178 [2020-10-27 22:45:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:45,677 INFO L225 Difference]: With dead ends: 171 [2020-10-27 22:45:45,677 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 22:45:45,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=473, Invalid=1333, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 22:45:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 22:45:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-27 22:45:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 22:45:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-10-27 22:45:45,685 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 178 [2020-10-27 22:45:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:45,686 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-10-27 22:45:45,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 22:45:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-10-27 22:45:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 22:45:45,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:45,689 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 10, 10, 3, 3, 3, 3, 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 22:45:45,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:45:45,689 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1396992854, now seen corresponding path program 10 times [2020-10-27 22:45:45,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:45,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375025156] [2020-10-27 22:45:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:50,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:45:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:50,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:50,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:50,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:45:50,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:50,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:51,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:51,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 22:45:51,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-27 22:45:51,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:45:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:45:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:45:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:51,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:52,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:52,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 22:45:52,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-27 22:45:52,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:45:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:45:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 22:45:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:52,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:53,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 22:45:53,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-27 22:45:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:45:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3220 backedges. 330 proven. 2508 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-27 22:45:53,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375025156] [2020-10-27 22:45:53,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:53,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 22:45:53,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592826955] [2020-10-27 22:45:53,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 22:45:53,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:53,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 22:45:53,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-10-27 22:45:53,148 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 30 states. [2020-10-27 22:45:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:54,354 INFO L93 Difference]: Finished difference Result 181 states and 224 transitions. [2020-10-27 22:45:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 22:45:54,354 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 189 [2020-10-27 22:45:54,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:54,356 INFO L225 Difference]: With dead ends: 181 [2020-10-27 22:45:54,356 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 22:45:54,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=536, Invalid=1534, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 22:45:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 22:45:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2020-10-27 22:45:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 22:45:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2020-10-27 22:45:54,367 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 189 [2020-10-27 22:45:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:54,367 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2020-10-27 22:45:54,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 22:45:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2020-10-27 22:45:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 22:45:54,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:54,370 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 11, 11, 3, 3, 3, 3, 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 22:45:54,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:45:54,370 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash -451971525, now seen corresponding path program 11 times [2020-10-27 22:45:54,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:54,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559041243] [2020-10-27 22:45:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:54,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:59,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:45:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:59,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:59,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:46:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:46:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:01,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:01,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:46:01,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-27 22:46:01,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:46:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:46:01,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 22:46:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:46:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-27 22:46:02,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 22:46:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 376 proven. 2857 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-10-27 22:46:02,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559041243] [2020-10-27 22:46:02,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:02,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 22:46:02,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671872876] [2020-10-27 22:46:02,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 22:46:02,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:02,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 22:46:02,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:46:02,138 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand 32 states. [2020-10-27 22:46:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:03,416 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-10-27 22:46:03,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 22:46:03,417 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-27 22:46:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:03,418 INFO L225 Difference]: With dead ends: 191 [2020-10-27 22:46:03,418 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 22:46:03,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=603, Invalid=1749, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 22:46:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 22:46:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-27 22:46:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 22:46:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 122 transitions. [2020-10-27 22:46:03,428 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 122 transitions. Word has length 200 [2020-10-27 22:46:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:03,429 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 122 transitions. [2020-10-27 22:46:03,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 22:46:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 122 transitions. [2020-10-27 22:46:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-27 22:46:03,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:03,430 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 12, 12, 3, 3, 3, 3, 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 22:46:03,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:46:03,431 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:03,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2118684742, now seen corresponding path program 12 times [2020-10-27 22:46:03,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:03,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688453797] [2020-10-27 22:46:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:08,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:08,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 22:46:08,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 22:46:08,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:46:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 22:46:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:46:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:08,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:08,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:08,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:08,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:08,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:08,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:09,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:09,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:46:09,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:09,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-27 22:46:09,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:46:09,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:09,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:46:09,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 22:46:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:10,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:10,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:46:10,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-27 22:46:10,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:46:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:10,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:46:10,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 22:46:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:11,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:11,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:46:11,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-27 22:46:11,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 22:46:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 425 proven. 3229 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2020-10-27 22:46:11,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688453797] [2020-10-27 22:46:11,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:11,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 22:46:11,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024480099] [2020-10-27 22:46:11,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 22:46:11,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 22:46:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:46:11,676 INFO L87 Difference]: Start difference. First operand 101 states and 122 transitions. Second operand 34 states. [2020-10-27 22:46:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:13,178 INFO L93 Difference]: Finished difference Result 201 states and 248 transitions. [2020-10-27 22:46:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 22:46:13,178 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 211 [2020-10-27 22:46:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:13,180 INFO L225 Difference]: With dead ends: 201 [2020-10-27 22:46:13,180 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 22:46:13,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=674, Invalid=1978, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 22:46:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 22:46:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-10-27 22:46:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 22:46:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2020-10-27 22:46:13,189 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 211 [2020-10-27 22:46:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:13,190 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2020-10-27 22:46:13,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 22:46:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2020-10-27 22:46:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 22:46:13,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:13,191 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 13, 13, 3, 3, 3, 3, 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 22:46:13,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:46:13,192 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:13,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1583195607, now seen corresponding path program 13 times [2020-10-27 22:46:13,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:13,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986959259] [2020-10-27 22:46:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:18,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:46:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:18,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:19,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:46:19,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-27 22:46:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:46:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 22:46:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:46:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:20,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:20,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:46:20,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-27 22:46:20,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:46:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 22:46:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 22:46:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:21,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:21,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:46:21,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-27 22:46:21,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 22:46:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4639 backedges. 477 proven. 3624 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2020-10-27 22:46:21,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986959259] [2020-10-27 22:46:21,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:21,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 22:46:21,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135431183] [2020-10-27 22:46:21,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 22:46:21,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 22:46:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=929, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 22:46:21,469 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand 36 states. [2020-10-27 22:46:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:23,026 INFO L93 Difference]: Finished difference Result 211 states and 260 transitions. [2020-10-27 22:46:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 22:46:23,027 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 222 [2020-10-27 22:46:23,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:23,028 INFO L225 Difference]: With dead ends: 211 [2020-10-27 22:46:23,028 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 22:46:23,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=749, Invalid=2221, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 22:46:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 22:46:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-27 22:46:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 22:46:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-10-27 22:46:23,042 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 222 [2020-10-27 22:46:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:23,042 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-10-27 22:46:23,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 22:46:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-10-27 22:46:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-27 22:46:23,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:23,045 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 14, 14, 3, 3, 3, 3, 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 22:46:23,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:46:23,046 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:23,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:23,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1834240994, now seen corresponding path program 14 times [2020-10-27 22:46:23,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:23,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725223002] [2020-10-27 22:46:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:28,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:28,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-27 22:46:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-27 22:46:28,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:46:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-27 22:46:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:46:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:28,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:28,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:28,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:46:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:28,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:29,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 22:46:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:46:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:31,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:31,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:46:31,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-27 22:46:31,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:46:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 22:46:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-27 22:46:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:31,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5170 backedges. 532 proven. 4042 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2020-10-27 22:46:31,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725223002] [2020-10-27 22:46:31,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:31,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 22:46:31,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935578521] [2020-10-27 22:46:31,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 22:46:31,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:31,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 22:46:31,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1038, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 22:46:31,870 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 38 states. [2020-10-27 22:46:33,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:33,565 INFO L93 Difference]: Finished difference Result 221 states and 272 transitions. [2020-10-27 22:46:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 22:46:33,565 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 233 [2020-10-27 22:46:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:33,567 INFO L225 Difference]: With dead ends: 221 [2020-10-27 22:46:33,567 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 22:46:33,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=828, Invalid=2478, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 22:46:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 22:46:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2020-10-27 22:46:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 22:46:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2020-10-27 22:46:33,577 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 233 [2020-10-27 22:46:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:33,577 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2020-10-27 22:46:33,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 22:46:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2020-10-27 22:46:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 22:46:33,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:33,579 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 15, 15, 3, 3, 3, 3, 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 22:46:33,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 22:46:33,580 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash -447908493, now seen corresponding path program 15 times [2020-10-27 22:46:33,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:33,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007616459] [2020-10-27 22:46:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:33,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:38,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:38,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 22:46:38,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:38,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 22:46:38,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:46:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 22:46:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:46:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:38,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:38,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:38,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:38,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:38,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:38,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:38,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:46:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:40,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 22:46:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:41,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:41,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:46:41,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-27 22:46:41,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:46:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:46:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 22:46:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:41,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:42,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:42,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5730 backedges. 590 proven. 4483 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2020-10-27 22:46:42,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007616459] [2020-10-27 22:46:42,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:42,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 22:46:42,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276905000] [2020-10-27 22:46:42,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 22:46:42,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:42,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 22:46:42,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=1153, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:46:42,231 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand 40 states. [2020-10-27 22:46:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:44,076 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2020-10-27 22:46:44,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:46:44,080 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 244 [2020-10-27 22:46:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:44,081 INFO L225 Difference]: With dead ends: 231 [2020-10-27 22:46:44,081 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 22:46:44,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=911, Invalid=2749, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 22:46:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 22:46:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-10-27 22:46:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 22:46:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 146 transitions. [2020-10-27 22:46:44,090 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 146 transitions. Word has length 244 [2020-10-27 22:46:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:44,091 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 146 transitions. [2020-10-27 22:46:44,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 22:46:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 146 transitions. [2020-10-27 22:46:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-27 22:46:44,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:44,093 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 16, 16, 3, 3, 3, 3, 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 22:46:44,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 22:46:44,093 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:44,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:44,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1928628094, now seen corresponding path program 16 times [2020-10-27 22:46:44,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:44,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16401321] [2020-10-27 22:46:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 22:46:49,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5179 [2020-10-27 22:46:49,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:46:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-27 22:46:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:46:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:49,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:49,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:49,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:46:49,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:49,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:50,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:50,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 22:46:50,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-27 22:46:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:46:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 22:46:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:46:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 22:46:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 22:46:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:53,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:53,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 22:46:53,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-27 22:46:53,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:46:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6319 backedges. 651 proven. 4947 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2020-10-27 22:46:53,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16401321] [2020-10-27 22:46:53,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:53,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 22:46:53,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984392722] [2020-10-27 22:46:53,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 22:46:53,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 22:46:53,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1274, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 22:46:53,130 INFO L87 Difference]: Start difference. First operand 121 states and 146 transitions. Second operand 42 states. [2020-10-27 22:46:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:55,018 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2020-10-27 22:46:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 22:46:55,021 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 255 [2020-10-27 22:46:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:55,022 INFO L225 Difference]: With dead ends: 241 [2020-10-27 22:46:55,022 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 22:46:55,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=998, Invalid=3034, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 22:46:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 22:46:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2020-10-27 22:46:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 22:46:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2020-10-27 22:46:55,034 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 255 [2020-10-27 22:46:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:55,034 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2020-10-27 22:46:55,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 22:46:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2020-10-27 22:46:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-27 22:46:55,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:55,036 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 17, 17, 3, 3, 3, 3, 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 22:46:55,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 22:46:55,036 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:55,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:55,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1303684367, now seen corresponding path program 17 times [2020-10-27 22:46:55,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:55,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711414126] [2020-10-27 22:46:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-27 22:47:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 22:47:00,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:47:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-27 22:47:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:47:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:00,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:00,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:00,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:00,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:47:00,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 22:47:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:02,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:47:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 22:47:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-27 22:47:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6937 backedges. 715 proven. 5434 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2020-10-27 22:47:04,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711414126] [2020-10-27 22:47:04,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:47:04,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 22:47:04,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549216541] [2020-10-27 22:47:04,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 22:47:04,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 22:47:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=1401, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 22:47:04,423 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand 44 states. [2020-10-27 22:47:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:06,522 INFO L93 Difference]: Finished difference Result 251 states and 308 transitions. [2020-10-27 22:47:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 22:47:06,523 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 266 [2020-10-27 22:47:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:06,525 INFO L225 Difference]: With dead ends: 251 [2020-10-27 22:47:06,525 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 22:47:06,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1089, Invalid=3333, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 22:47:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 22:47:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-27 22:47:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 22:47:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2020-10-27 22:47:06,534 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 266 [2020-10-27 22:47:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:06,534 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2020-10-27 22:47:06,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 22:47:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2020-10-27 22:47:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 22:47:06,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:06,537 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 18, 18, 3, 3, 3, 3, 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 22:47:06,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 22:47:06,537 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:06,537 INFO L82 PathProgramCache]: Analyzing trace with hash 457243878, now seen corresponding path program 18 times [2020-10-27 22:47:06,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:06,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807750043] [2020-10-27 22:47:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:06,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:06,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5210 [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 22:47:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:47:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:12,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:12,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:12,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:12,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:13,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:13,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:13,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-27 22:47:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:47:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 22:47:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 22:47:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:14,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:15,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-27 22:47:15,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:47:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 22:47:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 22:47:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:16,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:16,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1342 [2020-10-27 22:47:16,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 22:47:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7584 backedges. 782 proven. 5944 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-27 22:47:17,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807750043] [2020-10-27 22:47:17,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:47:17,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 22:47:17,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867363214] [2020-10-27 22:47:17,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 22:47:17,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 22:47:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=1534, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 22:47:17,035 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand 46 states. [2020-10-27 22:47:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:19,150 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2020-10-27 22:47:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 22:47:19,151 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 277 [2020-10-27 22:47:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:19,152 INFO L225 Difference]: With dead ends: 261 [2020-10-27 22:47:19,153 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 22:47:19,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1184, Invalid=3646, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 22:47:19,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 22:47:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2020-10-27 22:47:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 22:47:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 164 transitions. [2020-10-27 22:47:19,167 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 164 transitions. Word has length 277 [2020-10-27 22:47:19,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:19,167 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 164 transitions. [2020-10-27 22:47:19,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 22:47:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 164 transitions. [2020-10-27 22:47:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 22:47:19,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:19,170 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 19, 19, 3, 3, 3, 3, 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 22:47:19,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 22:47:19,171 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:19,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:19,171 INFO L82 PathProgramCache]: Analyzing trace with hash -706153301, now seen corresponding path program 19 times [2020-10-27 22:47:19,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:19,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727923729] [2020-10-27 22:47:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 22:47:24,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 22:47:24,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:47:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-27 22:47:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:47:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:25,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 22:47:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:47:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:28,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:28,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:47:28,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-27 22:47:28,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:47:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 22:47:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 22:47:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8260 backedges. 852 proven. 6477 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2020-10-27 22:47:29,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727923729] [2020-10-27 22:47:29,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:47:29,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 22:47:29,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288558146] [2020-10-27 22:47:29,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 22:47:29,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:29,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 22:47:29,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=1673, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 22:47:29,635 INFO L87 Difference]: Start difference. First operand 136 states and 164 transitions. Second operand 48 states. [2020-10-27 22:47:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:31,818 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2020-10-27 22:47:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:47:31,819 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 288 [2020-10-27 22:47:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:31,821 INFO L225 Difference]: With dead ends: 271 [2020-10-27 22:47:31,821 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 22:47:31,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1283, Invalid=3973, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 22:47:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 22:47:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-10-27 22:47:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-27 22:47:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 170 transitions. [2020-10-27 22:47:31,838 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 170 transitions. Word has length 288 [2020-10-27 22:47:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:31,839 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 170 transitions. [2020-10-27 22:47:31,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 22:47:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 170 transitions. [2020-10-27 22:47:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-27 22:47:31,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:31,841 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 20, 20, 3, 3, 3, 3, 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 22:47:31,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 22:47:31,841 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:31,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1865843018, now seen corresponding path program 20 times [2020-10-27 22:47:31,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:31,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84664938] [2020-10-27 22:47:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 22:47:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-27 22:47:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:47:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 22:47:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:47:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:37,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:38,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 22:47:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:39,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:47:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:39,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 22:47:41,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-27 22:47:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8965 backedges. 925 proven. 7033 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2020-10-27 22:47:42,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84664938] [2020-10-27 22:47:42,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:47:42,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 22:47:42,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411936928] [2020-10-27 22:47:42,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 22:47:42,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:42,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 22:47:42,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 22:47:42,822 INFO L87 Difference]: Start difference. First operand 141 states and 170 transitions. Second operand 50 states. [2020-10-27 22:47:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:45,260 INFO L93 Difference]: Finished difference Result 281 states and 344 transitions. [2020-10-27 22:47:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 22:47:45,260 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 299 [2020-10-27 22:47:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:45,262 INFO L225 Difference]: With dead ends: 281 [2020-10-27 22:47:45,262 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 22:47:45,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1386, Invalid=4314, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 22:47:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 22:47:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-10-27 22:47:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 22:47:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 176 transitions. [2020-10-27 22:47:45,279 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 176 transitions. Word has length 299 [2020-10-27 22:47:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:45,279 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 176 transitions. [2020-10-27 22:47:45,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 22:47:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 176 transitions. [2020-10-27 22:47:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-27 22:47:45,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:45,281 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 21, 21, 3, 3, 3, 3, 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 22:47:45,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 22:47:45,282 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:45,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1119888455, now seen corresponding path program 21 times [2020-10-27 22:47:45,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:45,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162394027] [2020-10-27 22:47:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5170 [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 22:47:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:47:50,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:50,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:47:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 22:47:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0