/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/sum60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:14:28,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:14:28,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:14:28,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:14:28,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:14:28,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:14:28,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:14:28,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:14:28,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:14:28,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:14:28,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:14:28,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:14:28,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:14:28,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:14:28,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:14:28,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:14:28,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:14:28,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:14:28,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:14:28,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:14:28,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:14:28,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:14:28,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:14:28,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:14:28,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:14:28,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:14:28,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:14:28,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:14:28,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:14:28,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:14:28,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:14:28,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:14:28,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:14:28,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:14:28,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:14:28,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:14:28,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:14:28,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:14:28,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:14:28,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:14:28,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:14:28,447 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 04:14:28,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:14:28,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:14:28,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:14:28,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:14:28,479 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:14:28,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:14:28,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:14:28,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:14:28,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:14:28,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:14:28,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:14:28,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:14:28,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:14:28,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:14:28,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:14:28,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:14:28,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:14:28,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:14:28,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:14:28,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:14:28,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:14:28,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:14:28,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:14:28,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:14:28,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:14:28,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:14:28,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:14:28,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:14:28,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:14:28,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:14:28,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:14:28,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:14:28,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:14:28,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:14:28,908 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:14:28,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum60-2.i [2020-10-27 04:14:29,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c979919ae/e05bf1b4ab384451bfed639717a4bb7f/FLAGc951a9df8 [2020-10-27 04:14:29,618 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:14:29,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum60-2.i [2020-10-27 04:14:29,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c979919ae/e05bf1b4ab384451bfed639717a4bb7f/FLAGc951a9df8 [2020-10-27 04:14:30,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c979919ae/e05bf1b4ab384451bfed639717a4bb7f [2020-10-27 04:14:30,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:14:30,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:14:30,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:14:30,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:14:30,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:14:30,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd2ef6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30, skipping insertion in model container [2020-10-27 04:14:30,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:14:30,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:14:30,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:14:30,315 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:14:30,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:14:30,360 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:14:30,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30 WrapperNode [2020-10-27 04:14:30,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:14:30,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:14:30,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:14:30,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:14:30,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (1/1) ... [2020-10-27 04:14:30,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:14:30,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:14:30,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:14:30,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:14:30,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (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 04:14:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:14:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:14:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:14:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-27 04:14:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:14:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:14:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:14:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:14:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:14:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:14:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:14:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:14:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-27 04:14:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:14:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:14:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:14:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:14:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:14:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:14:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:14:31,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:14:31,045 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:14:31,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:31 BoogieIcfgContainer [2020-10-27 04:14:31,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:14:31,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:14:31,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:14:31,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:14:31,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:14:30" (1/3) ... [2020-10-27 04:14:31,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5828a758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:31, skipping insertion in model container [2020-10-27 04:14:31,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:30" (2/3) ... [2020-10-27 04:14:31,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5828a758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:31, skipping insertion in model container [2020-10-27 04:14:31,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:31" (3/3) ... [2020-10-27 04:14:31,062 INFO L111 eAbstractionObserver]: Analyzing ICFG sum60-2.i [2020-10-27 04:14:31,077 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:14:31,083 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:14:31,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:14:31,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:14:31,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:14:31,145 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:14:31,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:14:31,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:14:31,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:14:31,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:14:31,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:14:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 04:14:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:14:31,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:31,181 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 04:14:31,181 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:31,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-27 04:14:31,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:31,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620785774] [2020-10-27 04:14:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:31,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:14:32,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:14:32,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-27 04:14:32,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:14:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:14:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:32,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:14:32,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:14:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:14:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:14:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:33,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:33,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:14:33,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:33,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:14:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:33,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:14:33,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:33,039 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 04:14:33,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620785774] [2020-10-27 04:14:33,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:14:33,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:14:33,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279847170] [2020-10-27 04:14:33,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:14:33,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:33,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:14:33,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:14:33,079 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 04:14:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:33,206 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 04:14:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:14:33,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:14:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:33,218 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:14:33,219 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 04:14:33,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:14:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 04:14:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 04:14:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 04:14:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 04:14:33,290 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 04:14:33,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:33,293 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 04:14:33,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:14:33,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 04:14:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:14:33,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:33,298 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 04:14:33,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:14:33,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-27 04:14:33,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:33,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347003934] [2020-10-27 04:14:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:35,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:14:35,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:14:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1696 [2020-10-27 04:14:35,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:35,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:35,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:35,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:35,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:35,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:35,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:14:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:35,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:35,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:35,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:14:35,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:35,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:14:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:35,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:35,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:14:35,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:35,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:35,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:14:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:35,141 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 04:14:35,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347003934] [2020-10-27 04:14:35,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:14:35,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:14:35,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943608873] [2020-10-27 04:14:35,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:14:35,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:35,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:14:35,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:14:35,146 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-27 04:14:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:35,286 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-27 04:14:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:14:35,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:14:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:35,288 INFO L225 Difference]: With dead ends: 52 [2020-10-27 04:14:35,288 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:14:35,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:14:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:14:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 04:14:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 04:14:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 04:14:35,299 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2020-10-27 04:14:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:35,300 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 04:14:35,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:14:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 04:14:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 04:14:35,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:35,302 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-27 04:14:35,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:14:35,302 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1537402351, now seen corresponding path program 1 times [2020-10-27 04:14:35,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:35,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184224087] [2020-10-27 04:14:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:14:40,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:40,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:14:40,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:40,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:40,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:14:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:40,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:14:40,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 04:14:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:40,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:14:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:14:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:40,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:14:40,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:14:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 04:14:40,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184224087] [2020-10-27 04:14:40,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:40,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:14:40,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472574549] [2020-10-27 04:14:40,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:14:40,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:40,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:14:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:14:40,577 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-27 04:14:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:40,795 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-27 04:14:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:14:40,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 04:14:40,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:40,797 INFO L225 Difference]: With dead ends: 57 [2020-10-27 04:14:40,797 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 04:14:40,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 04:14:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 04:14:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:14:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 04:14:40,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 42 [2020-10-27 04:14:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:40,815 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 04:14:40,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:14:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 04:14:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:14:40,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:40,820 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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 04:14:40,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:14:40,821 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:40,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:40,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1486624559, now seen corresponding path program 2 times [2020-10-27 04:14:40,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:40,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527519660] [2020-10-27 04:14:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:45,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:14:45,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:14:45,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:45,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:45,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:14:45,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:14:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:14:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:46,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:46,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:46,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:14:46,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:46,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:14:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:46,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:14:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:14:46,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527519660] [2020-10-27 04:14:46,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:46,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:14:46,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776202508] [2020-10-27 04:14:46,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:14:46,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:46,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:14:46,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:46,132 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-10-27 04:14:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:46,368 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-27 04:14:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:14:46,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-27 04:14:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:46,370 INFO L225 Difference]: With dead ends: 63 [2020-10-27 04:14:46,370 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 04:14:46,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:14:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 04:14:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-27 04:14:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 04:14:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-27 04:14:46,379 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 50 [2020-10-27 04:14:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:46,380 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-27 04:14:46,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:14:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-27 04:14:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 04:14:46,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:46,381 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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 04:14:46,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:14:46,382 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1972987281, now seen corresponding path program 3 times [2020-10-27 04:14:46,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:46,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490669803] [2020-10-27 04:14:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:46,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 04:14:51,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:14:51,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:51,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:51,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:51,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:51,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:14:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:51,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:14:51,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 04:14:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:51,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:14:51,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:14:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:51,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:14:51,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:14:51,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490669803] [2020-10-27 04:14:51,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:51,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:14:51,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458746694] [2020-10-27 04:14:51,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:14:51,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:51,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:14:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:14:51,694 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-10-27 04:14:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:52,021 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 04:14:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:14:52,022 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 04:14:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:52,024 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:14:52,024 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:14:52,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:14:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:14:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 04:14:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 04:14:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 04:14:52,040 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 58 [2020-10-27 04:14:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:52,040 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 04:14:52,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:14:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 04:14:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:14:52,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:52,044 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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 04:14:52,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:14:52,044 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:52,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1550094417, now seen corresponding path program 4 times [2020-10-27 04:14:52,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:52,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018469346] [2020-10-27 04:14:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 04:14:57,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:14:57,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:57,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:14:57,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:57,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:14:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:57,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 04:14:57,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:14:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:57,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 04:14:57,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:14:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:57,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:14:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 48 proven. 112 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:14:57,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018469346] [2020-10-27 04:14:57,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:57,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:14:57,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181072799] [2020-10-27 04:14:57,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:14:57,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:14:57,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:14:57,443 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-27 04:14:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:57,816 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 04:14:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:14:57,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 04:14:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:57,818 INFO L225 Difference]: With dead ends: 75 [2020-10-27 04:14:57,818 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 04:14:57,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:14:57,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 04:14:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 04:14:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:14:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 04:14:57,827 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 66 [2020-10-27 04:14:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:57,828 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 04:14:57,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:14:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 04:14:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:14:57,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:57,829 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 04:14:57,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:14:57,830 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash 407660817, now seen corresponding path program 5 times [2020-10-27 04:14:57,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:57,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132540748] [2020-10-27 04:14:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:15:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 04:15:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:15:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:03,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:03,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:03,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:15:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:03,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:15:03,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 04:15:03,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:03,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:15:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:03,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:15:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:15:03,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:15:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:03,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:15:03,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:15:03,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:03,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 75 proven. 175 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 04:15:03,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132540748] [2020-10-27 04:15:03,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:03,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:15:03,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006309670] [2020-10-27 04:15:03,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:15:03,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:03,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:15:03,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:15:03,349 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-27 04:15:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:03,773 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-27 04:15:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:15:03,778 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 04:15:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:03,779 INFO L225 Difference]: With dead ends: 81 [2020-10-27 04:15:03,780 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 04:15:03,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:15:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 04:15:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 04:15:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 04:15:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-27 04:15:03,801 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 74 [2020-10-27 04:15:03,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:03,802 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-27 04:15:03,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:15:03,802 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-27 04:15:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:15:03,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:03,806 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 04:15:03,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:15:03,806 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:03,807 INFO L82 PathProgramCache]: Analyzing trace with hash -990384175, now seen corresponding path program 6 times [2020-10-27 04:15:03,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:03,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853050542] [2020-10-27 04:15:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:15:08,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:15:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:08,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:08,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:15:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:09,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:09,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:15:09,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:09,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:09,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:09,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:15:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:09,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 04:15:09,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:09,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:15:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:09,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:09,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 04:15:09,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 108 proven. 252 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:15:09,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853050542] [2020-10-27 04:15:09,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:09,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:15:09,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369588159] [2020-10-27 04:15:09,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:15:09,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:09,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:15:09,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:15:09,404 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-10-27 04:15:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:09,976 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-27 04:15:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:15:09,977 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 04:15:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:09,978 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:15:09,978 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:15:09,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:15:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:15:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 04:15:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 04:15:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 04:15:09,988 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 82 [2020-10-27 04:15:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:09,988 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 04:15:09,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:15:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 04:15:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:15:09,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:09,990 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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 04:15:09,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:15:09,991 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:09,991 INFO L82 PathProgramCache]: Analyzing trace with hash -852613999, now seen corresponding path program 7 times [2020-10-27 04:15:09,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:09,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510147122] [2020-10-27 04:15:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:15:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:15:15,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:15,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:15,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:15:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 04:15:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:15:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:15,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 04:15:15,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:15:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:15,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 04:15:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 147 proven. 343 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 04:15:15,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510147122] [2020-10-27 04:15:15,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:15,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:15:15,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138440743] [2020-10-27 04:15:15,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:15:15,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:15,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:15:15,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:15:15,599 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 19 states. [2020-10-27 04:15:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:16,201 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-27 04:15:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:15:16,201 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-10-27 04:15:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:16,203 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:15:16,203 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 04:15:16,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:15:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 04:15:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-27 04:15:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:15:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-27 04:15:16,226 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 90 [2020-10-27 04:15:16,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:16,226 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-27 04:15:16,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:15:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-27 04:15:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:15:16,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:16,228 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 04:15:16,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:15:16,229 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:16,230 INFO L82 PathProgramCache]: Analyzing trace with hash -623507631, now seen corresponding path program 8 times [2020-10-27 04:15:16,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:16,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84267630] [2020-10-27 04:15:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:15:21,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:21,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 04:15:21,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:21,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:21,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:21,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:15:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:21,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 04:15:21,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:15:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:21,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 04:15:21,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:21,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:21,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:21,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:15:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 192 proven. 448 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:15:21,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84267630] [2020-10-27 04:15:21,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:21,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:15:21,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040403426] [2020-10-27 04:15:21,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:15:21,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:21,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:15:21,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:15:21,958 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-10-27 04:15:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:22,665 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-10-27 04:15:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:15:22,665 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-27 04:15:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:22,667 INFO L225 Difference]: With dead ends: 99 [2020-10-27 04:15:22,667 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:15:22,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:15:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:15:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-27 04:15:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 04:15:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 04:15:22,679 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 98 [2020-10-27 04:15:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:22,679 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 04:15:22,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:15:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 04:15:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:15:22,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:22,681 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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 04:15:22,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:15:22,681 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:22,682 INFO L82 PathProgramCache]: Analyzing trace with hash -956917743, now seen corresponding path program 9 times [2020-10-27 04:15:22,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:22,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041283572] [2020-10-27 04:15:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:22,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:15:27,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:15:27,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:27,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:27,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:27,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:27,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:15:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 04:15:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:15:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:28,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 04:15:28,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:15:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:28,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 04:15:28,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 243 proven. 567 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:15:28,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041283572] [2020-10-27 04:15:28,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:28,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:15:28,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470369432] [2020-10-27 04:15:28,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:15:28,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:28,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:15:28,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:15:28,444 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 23 states. [2020-10-27 04:15:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:29,191 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-10-27 04:15:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:15:29,192 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-27 04:15:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:29,193 INFO L225 Difference]: With dead ends: 105 [2020-10-27 04:15:29,194 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:15:29,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:15:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:15:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-27 04:15:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:15:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-27 04:15:29,205 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 106 [2020-10-27 04:15:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:29,205 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-27 04:15:29,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:15:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-27 04:15:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:15:29,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:29,207 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 04:15:29,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:15:29,207 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:29,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1984506159, now seen corresponding path program 10 times [2020-10-27 04:15:29,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:29,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045214413] [2020-10-27 04:15:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:34,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:34,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:34,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:34,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:34,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:34,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 04:15:34,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:34,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:35,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:35,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 04:15:35,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:15:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 04:15:35,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 300 proven. 700 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 04:15:35,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045214413] [2020-10-27 04:15:35,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:35,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:15:35,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189252825] [2020-10-27 04:15:35,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:15:35,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:35,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:15:35,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:15:35,358 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 25 states. [2020-10-27 04:15:36,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:36,143 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-10-27 04:15:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:15:36,144 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-27 04:15:36,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:36,147 INFO L225 Difference]: With dead ends: 111 [2020-10-27 04:15:36,147 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 04:15:36,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:15:36,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 04:15:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-27 04:15:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 04:15:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-27 04:15:36,173 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 114 [2020-10-27 04:15:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:36,174 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-27 04:15:36,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:15:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-27 04:15:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:15:36,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:36,179 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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 04:15:36,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:15:36,180 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:36,183 INFO L82 PathProgramCache]: Analyzing trace with hash 710787985, now seen corresponding path program 11 times [2020-10-27 04:15:36,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:36,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95136888] [2020-10-27 04:15:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:41,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:15:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:41,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:15:41,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 04:15:41,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:15:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:15:42,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 04:15:42,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:15:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:42,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:15:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 04:15:42,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 363 proven. 847 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 04:15:42,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95136888] [2020-10-27 04:15:42,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:42,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 04:15:42,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398366074] [2020-10-27 04:15:42,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 04:15:42,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:42,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 04:15:42,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:15:42,397 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 27 states. [2020-10-27 04:15:43,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:43,288 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2020-10-27 04:15:43,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:15:43,289 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 122 [2020-10-27 04:15:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:43,290 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:15:43,290 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 04:15:43,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:15:43,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 04:15:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-27 04:15:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 04:15:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-27 04:15:43,301 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 122 [2020-10-27 04:15:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:43,302 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-27 04:15:43,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 04:15:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-27 04:15:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 04:15:43,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:43,304 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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 04:15:43,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:15:43,304 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:43,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1353556399, now seen corresponding path program 12 times [2020-10-27 04:15:43,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:43,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461027290] [2020-10-27 04:15:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:15:48,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:48,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:15:48,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:48,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:48,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:15:48,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:15:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:15:48,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 04:15:48,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:49,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:15:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:49,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:49,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:15:49,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:49,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 04:15:49,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:49,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:15:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:49,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:49,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:15:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 04:15:49,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 432 proven. 1008 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:15:49,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461027290] [2020-10-27 04:15:49,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:49,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:15:49,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063340765] [2020-10-27 04:15:49,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:15:49,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:49,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:15:49,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:15:49,465 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 29 states. [2020-10-27 04:15:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:50,524 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-27 04:15:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:15:50,525 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-10-27 04:15:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:50,527 INFO L225 Difference]: With dead ends: 123 [2020-10-27 04:15:50,528 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:15:50,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:15:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:15:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-27 04:15:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 04:15:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-27 04:15:50,540 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 130 [2020-10-27 04:15:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:50,540 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-27 04:15:50,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:15:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-27 04:15:50,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 04:15:50,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:50,542 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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 04:15:50,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:15:50,542 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 236693265, now seen corresponding path program 13 times [2020-10-27 04:15:50,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:50,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965497272] [2020-10-27 04:15:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:55,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:15:55,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:15:55,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:55,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:55,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:55,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:55,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:55,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:15:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:55,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:55,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:15:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:56,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:15:56,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:56,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 04:15:56,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:56,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:15:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 507 proven. 1183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 04:15:56,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965497272] [2020-10-27 04:15:56,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:56,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:15:56,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273285690] [2020-10-27 04:15:56,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:15:56,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:56,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:15:56,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:15:56,640 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 31 states. [2020-10-27 04:15:57,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:57,775 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-10-27 04:15:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:15:57,775 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-27 04:15:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:57,777 INFO L225 Difference]: With dead ends: 129 [2020-10-27 04:15:57,777 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 04:15:57,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:15:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 04:15:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-27 04:15:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 04:15:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-27 04:15:57,801 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 138 [2020-10-27 04:15:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:57,801 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-27 04:15:57,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:15:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-27 04:15:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:15:57,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:57,803 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 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 04:15:57,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:15:57,803 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:57,803 INFO L82 PathProgramCache]: Analyzing trace with hash 459316689, now seen corresponding path program 14 times [2020-10-27 04:15:57,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:57,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142639552] [2020-10-27 04:15:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:02,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:02,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:16:02,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:16:02,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:02,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:03,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:03,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:03,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:16:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:03,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:16:03,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 04:16:03,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:16:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:03,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:16:03,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 04:16:03,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 04:16:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:03,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:16:03,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 04:16:03,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 588 proven. 1372 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 04:16:03,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142639552] [2020-10-27 04:16:03,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:03,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 04:16:03,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841509204] [2020-10-27 04:16:03,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 04:16:03,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:03,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 04:16:03,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:16:03,977 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 33 states. [2020-10-27 04:16:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:05,200 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-27 04:16:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:16:05,202 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-10-27 04:16:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:05,203 INFO L225 Difference]: With dead ends: 135 [2020-10-27 04:16:05,203 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 04:16:05,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:16:05,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 04:16:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-27 04:16:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 04:16:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-27 04:16:05,220 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 146 [2020-10-27 04:16:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:05,220 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-27 04:16:05,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 04:16:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-27 04:16:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:16:05,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:05,223 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 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 04:16:05,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:16:05,223 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:05,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:05,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2062041745, now seen corresponding path program 15 times [2020-10-27 04:16:05,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:05,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457386752] [2020-10-27 04:16:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:10,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 04:16:10,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:16:10,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:10,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:10,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:10,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:10,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:16:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:10,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:16:10,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 04:16:10,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:16:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:16:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:11,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:16:11,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 04:16:11,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 675 proven. 1575 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 04:16:11,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457386752] [2020-10-27 04:16:11,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:11,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:16:11,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712834754] [2020-10-27 04:16:11,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:16:11,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:11,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:16:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:16:11,663 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 35 states. [2020-10-27 04:16:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:12,974 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2020-10-27 04:16:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 04:16:12,975 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 154 [2020-10-27 04:16:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:12,976 INFO L225 Difference]: With dead ends: 141 [2020-10-27 04:16:12,976 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 04:16:12,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:16:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 04:16:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-27 04:16:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 04:16:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-27 04:16:12,994 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 154 [2020-10-27 04:16:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:12,995 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-27 04:16:12,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 04:16:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-27 04:16:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 04:16:12,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:12,998 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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 04:16:12,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:16:12,998 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1885760175, now seen corresponding path program 16 times [2020-10-27 04:16:12,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:12,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044972857] [2020-10-27 04:16:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:18,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:18,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:18,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:18,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:16:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:18,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:18,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-27 04:16:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:16:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:19,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 04:16:19,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:16:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:19,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:19,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:19,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:19,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 04:16:19,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:19,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2671 backedges. 768 proven. 1792 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 04:16:19,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044972857] [2020-10-27 04:16:19,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:19,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 04:16:19,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73429615] [2020-10-27 04:16:19,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 04:16:19,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 04:16:19,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:16:19,669 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 37 states. [2020-10-27 04:16:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:20,731 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2020-10-27 04:16:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 04:16:20,732 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 162 [2020-10-27 04:16:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:20,733 INFO L225 Difference]: With dead ends: 147 [2020-10-27 04:16:20,733 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 04:16:20,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:16:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 04:16:20,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-27 04:16:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 04:16:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-27 04:16:20,743 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 162 [2020-10-27 04:16:20,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:20,744 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-27 04:16:20,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 04:16:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-27 04:16:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 04:16:20,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:20,746 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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 04:16:20,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:16:20,746 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:20,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1803261457, now seen corresponding path program 17 times [2020-10-27 04:16:20,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:20,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176820984] [2020-10-27 04:16:20,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:20,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:25,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:25,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:16:25,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-27 04:16:25,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:25,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:16:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:26,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:26,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:16:26,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 04:16:26,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:26,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:16:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:27,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:27,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:27,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:16:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:27,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:27,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:16:27,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 04:16:27,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 867 proven. 2023 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-27 04:16:27,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176820984] [2020-10-27 04:16:27,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:27,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 04:16:27,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17589231] [2020-10-27 04:16:27,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 04:16:27,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:27,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 04:16:27,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:16:27,306 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 39 states. [2020-10-27 04:16:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:28,839 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-27 04:16:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 04:16:28,840 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 170 [2020-10-27 04:16:28,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:28,841 INFO L225 Difference]: With dead ends: 153 [2020-10-27 04:16:28,841 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 04:16:28,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:16:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 04:16:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-27 04:16:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 04:16:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-27 04:16:28,851 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 170 [2020-10-27 04:16:28,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:28,851 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-27 04:16:28,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 04:16:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-27 04:16:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 04:16:28,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:28,853 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 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 04:16:28,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:16:28,853 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:28,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:28,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1078639407, now seen corresponding path program 18 times [2020-10-27 04:16:28,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:28,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893281458] [2020-10-27 04:16:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 04:16:33,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:33,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 04:16:33,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:34,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:34,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:34,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:16:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:16:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:35,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:35,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:16:35,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 04:16:35,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:35,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:16:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:35,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:35,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:16:35,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:35,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 04:16:35,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:35,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:35,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:35,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:35,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3363 backedges. 972 proven. 2268 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:16:35,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893281458] [2020-10-27 04:16:35,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:35,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 04:16:35,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260943359] [2020-10-27 04:16:35,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 04:16:35,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:35,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 04:16:35,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:16:35,539 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 41 states. [2020-10-27 04:16:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:37,199 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-27 04:16:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 04:16:37,200 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 178 [2020-10-27 04:16:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:37,201 INFO L225 Difference]: With dead ends: 159 [2020-10-27 04:16:37,201 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:16:37,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:16:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:16:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-27 04:16:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 04:16:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-27 04:16:37,210 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 178 [2020-10-27 04:16:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:37,211 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-27 04:16:37,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 04:16:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-27 04:16:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-27 04:16:37,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:37,212 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 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 04:16:37,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:16:37,213 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:37,213 INFO L82 PathProgramCache]: Analyzing trace with hash -863133295, now seen corresponding path program 19 times [2020-10-27 04:16:37,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:37,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176587292] [2020-10-27 04:16:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:42,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:42,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 04:16:42,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:16:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:42,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:42,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:42,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:42,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:42,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:42,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:16:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:42,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:42,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 04:16:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:16:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:43,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 04:16:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:44,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 04:16:44,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 1083 proven. 2527 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-27 04:16:44,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176587292] [2020-10-27 04:16:44,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:44,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 04:16:44,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885174917] [2020-10-27 04:16:44,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 04:16:44,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:44,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 04:16:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:16:44,064 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 43 states. [2020-10-27 04:16:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:45,758 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-10-27 04:16:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:16:45,759 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 186 [2020-10-27 04:16:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:45,760 INFO L225 Difference]: With dead ends: 165 [2020-10-27 04:16:45,761 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 04:16:45,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:16:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 04:16:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-27 04:16:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:16:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-10-27 04:16:45,771 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 186 [2020-10-27 04:16:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:45,771 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-10-27 04:16:45,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 04:16:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-10-27 04:16:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 04:16:45,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:45,773 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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 04:16:45,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:16:45,773 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1366010961, now seen corresponding path program 20 times [2020-10-27 04:16:45,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:45,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406013794] [2020-10-27 04:16:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:50,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 04:16:50,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:16:50,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:16:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:51,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:51,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:16:51,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 04:16:51,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:16:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:52,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:16:52,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:52,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 04:16:52,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 04:16:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 1200 proven. 2800 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-27 04:16:52,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406013794] [2020-10-27 04:16:52,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:52,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 04:16:52,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279091291] [2020-10-27 04:16:52,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 04:16:52,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 04:16:52,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:16:52,775 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 45 states. [2020-10-27 04:16:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:54,674 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2020-10-27 04:16:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 04:16:54,679 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 194 [2020-10-27 04:16:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:54,680 INFO L225 Difference]: With dead ends: 171 [2020-10-27 04:16:54,680 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 04:16:54,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 04:16:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 04:16:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-10-27 04:16:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 04:16:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-10-27 04:16:54,690 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 194 [2020-10-27 04:16:54,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:54,690 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-10-27 04:16:54,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 04:16:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-10-27 04:16:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 04:16:54,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:54,692 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 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 04:16:54,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:16:54,692 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2094425361, now seen corresponding path program 21 times [2020-10-27 04:16:54,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:54,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920968018] [2020-10-27 04:16:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 04:16:59,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 04:16:59,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:16:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:00,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:17:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:00,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:17:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 04:17:00,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:17:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:17:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 04:17:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:17:01,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 04:17:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:01,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:17:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4551 backedges. 1323 proven. 3087 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-27 04:17:01,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920968018] [2020-10-27 04:17:01,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:01,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-27 04:17:01,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998344599] [2020-10-27 04:17:01,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-27 04:17:01,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:01,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-27 04:17:01,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 04:17:01,985 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 47 states. [2020-10-27 04:17:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:03,748 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2020-10-27 04:17:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 04:17:03,749 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 202 [2020-10-27 04:17:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:03,750 INFO L225 Difference]: With dead ends: 177 [2020-10-27 04:17:03,750 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 04:17:03,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 04:17:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 04:17:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-27 04:17:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 04:17:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2020-10-27 04:17:03,759 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 202 [2020-10-27 04:17:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:03,760 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2020-10-27 04:17:03,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-27 04:17:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2020-10-27 04:17:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 04:17:03,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:03,761 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 22, 22, 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 04:17:03,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 04:17:03,762 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:03,762 INFO L82 PathProgramCache]: Analyzing trace with hash -596325423, now seen corresponding path program 22 times [2020-10-27 04:17:03,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:03,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189280860] [2020-10-27 04:17:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:17:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:09,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:17:09,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-27 04:17:09,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:17:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 04:17:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:11,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:11,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:17:11,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:11,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-27 04:17:11,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:11,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4987 backedges. 1452 proven. 3388 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 04:17:11,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189280860] [2020-10-27 04:17:11,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:11,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-27 04:17:11,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858383158] [2020-10-27 04:17:11,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-27 04:17:11,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:11,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-27 04:17:11,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:17:11,143 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand 49 states. [2020-10-27 04:17:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:13,041 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2020-10-27 04:17:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 04:17:13,041 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 210 [2020-10-27 04:17:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:13,042 INFO L225 Difference]: With dead ends: 183 [2020-10-27 04:17:13,043 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 04:17:13,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 04:17:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 04:17:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-27 04:17:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 04:17:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2020-10-27 04:17:13,055 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 210 [2020-10-27 04:17:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:13,055 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2020-10-27 04:17:13,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-27 04:17:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2020-10-27 04:17:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 04:17:13,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:13,057 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 23, 23, 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 04:17:13,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 04:17:13,059 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1292755089, now seen corresponding path program 23 times [2020-10-27 04:17:13,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:13,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226509412] [2020-10-27 04:17:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:13,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:18,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:18,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:18,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:18,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:18,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:18,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:17:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:19,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:19,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:17:19,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-27 04:17:19,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:17:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:17:20,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:20,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 04:17:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:17:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:17:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-27 04:17:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5443 backedges. 1587 proven. 3703 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-27 04:17:20,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226509412] [2020-10-27 04:17:20,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:20,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-27 04:17:20,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118502407] [2020-10-27 04:17:20,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-27 04:17:20,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-27 04:17:20,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:17:20,797 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 51 states. [2020-10-27 04:17:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:23,027 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2020-10-27 04:17:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 04:17:23,028 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-10-27 04:17:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:23,029 INFO L225 Difference]: With dead ends: 189 [2020-10-27 04:17:23,029 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 04:17:23,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1299, Invalid=4251, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 04:17:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 04:17:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-27 04:17:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 04:17:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-10-27 04:17:23,036 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 218 [2020-10-27 04:17:23,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:23,037 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-10-27 04:17:23,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-27 04:17:23,037 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-10-27 04:17:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 04:17:23,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:23,039 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 24, 24, 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 04:17:23,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:17:23,039 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:23,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:23,039 INFO L82 PathProgramCache]: Analyzing trace with hash -360144047, now seen corresponding path program 24 times [2020-10-27 04:17:23,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:23,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608632172] [2020-10-27 04:17:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:28,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:28,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:17:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:29,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:30,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 04:17:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:30,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:30,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 04:17:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:30,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:30,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:30,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:17:30,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-27 04:17:30,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:30,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5919 backedges. 1728 proven. 4032 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:17:30,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608632172] [2020-10-27 04:17:30,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:30,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-27 04:17:30,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346337018] [2020-10-27 04:17:30,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-27 04:17:30,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:30,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-27 04:17:30,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 04:17:30,831 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 53 states. [2020-10-27 04:17:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:32,943 INFO L93 Difference]: Finished difference Result 195 states and 207 transitions. [2020-10-27 04:17:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:17:32,944 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 226 [2020-10-27 04:17:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:32,945 INFO L225 Difference]: With dead ends: 195 [2020-10-27 04:17:32,945 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 04:17:32,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 04:17:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 04:17:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-27 04:17:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:17:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2020-10-27 04:17:32,955 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 226 [2020-10-27 04:17:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:32,956 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2020-10-27 04:17:32,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-27 04:17:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2020-10-27 04:17:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-27 04:17:32,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:32,958 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 25, 25, 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 04:17:32,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 04:17:32,958 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:32,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:32,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1305583, now seen corresponding path program 25 times [2020-10-27 04:17:32,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:32,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810497026] [2020-10-27 04:17:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:33,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:38,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:38,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:38,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:38,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:17:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 04:17:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:17:40,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 04:17:40,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:40,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:40,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:40,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 04:17:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:17:40,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 04:17:40,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6415 backedges. 1875 proven. 4375 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-27 04:17:40,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810497026] [2020-10-27 04:17:40,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:40,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-27 04:17:40,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138343521] [2020-10-27 04:17:40,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-27 04:17:40,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:40,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-27 04:17:40,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 04:17:40,599 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 55 states. [2020-10-27 04:17:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:43,008 INFO L93 Difference]: Finished difference Result 201 states and 213 transitions. [2020-10-27 04:17:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 04:17:43,015 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 234 [2020-10-27 04:17:43,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:43,016 INFO L225 Difference]: With dead ends: 201 [2020-10-27 04:17:43,017 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 04:17:43,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1511, Invalid=4969, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 04:17:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 04:17:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-27 04:17:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 04:17:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2020-10-27 04:17:43,029 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 234 [2020-10-27 04:17:43,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:43,030 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2020-10-27 04:17:43,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-27 04:17:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2020-10-27 04:17:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 04:17:43,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:43,031 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 26, 26, 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 04:17:43,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 04:17:43,032 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:43,032 INFO L82 PathProgramCache]: Analyzing trace with hash -144756015, now seen corresponding path program 26 times [2020-10-27 04:17:43,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:43,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678802789] [2020-10-27 04:17:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:43,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:48,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:48,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:17:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:49,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:49,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:17:49,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 04:17:49,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 04:17:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:17:50,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 04:17:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:51,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:51,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6931 backedges. 2028 proven. 4732 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-27 04:17:51,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678802789] [2020-10-27 04:17:51,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:51,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-27 04:17:51,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751964710] [2020-10-27 04:17:51,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-27 04:17:51,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:51,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-27 04:17:51,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=2379, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:17:51,287 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 57 states. [2020-10-27 04:17:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:53,880 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2020-10-27 04:17:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 04:17:53,881 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 242 [2020-10-27 04:17:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:53,883 INFO L225 Difference]: With dead ends: 207 [2020-10-27 04:17:53,883 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 04:17:53,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1623, Invalid=5349, Unknown=0, NotChecked=0, Total=6972 [2020-10-27 04:17:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 04:17:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-27 04:17:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 04:17:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2020-10-27 04:17:53,892 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 242 [2020-10-27 04:17:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:53,893 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2020-10-27 04:17:53,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-27 04:17:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2020-10-27 04:17:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 04:17:53,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:53,894 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 27, 27, 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 04:17:53,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 04:17:53,895 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1244200849, now seen corresponding path program 27 times [2020-10-27 04:17:53,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:53,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366292476] [2020-10-27 04:17:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:54,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:17:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:17:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:17:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 04:18:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:18:01,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 04:18:01,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:18:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:18:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:18:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 04:18:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:18:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7467 backedges. 2187 proven. 5103 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-27 04:18:01,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366292476] [2020-10-27 04:18:01,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:18:01,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-27 04:18:01,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899355358] [2020-10-27 04:18:01,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-27 04:18:01,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:01,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-27 04:18:01,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 04:18:01,877 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand 59 states. [2020-10-27 04:18:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:04,769 INFO L93 Difference]: Finished difference Result 213 states and 225 transitions. [2020-10-27 04:18:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 04:18:04,770 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 250 [2020-10-27 04:18:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:04,772 INFO L225 Difference]: With dead ends: 213 [2020-10-27 04:18:04,772 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 04:18:04,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2020-10-27 04:18:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 04:18:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-10-27 04:18:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 04:18:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2020-10-27 04:18:04,782 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 250 [2020-10-27 04:18:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:04,782 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2020-10-27 04:18:04,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-27 04:18:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2020-10-27 04:18:04,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 04:18:04,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:04,784 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 28, 28, 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 04:18:04,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 04:18:04,784 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:04,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:04,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1890613841, now seen corresponding path program 28 times [2020-10-27 04:18:04,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:04,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291262275] [2020-10-27 04:18:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking...