/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:04:20,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:04:20,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:04:20,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:04:20,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:04:20,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:04:20,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:04:20,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:04:20,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:04:20,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:04:20,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:04:20,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:04:20,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:04:20,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:04:20,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:04:20,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:04:20,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:04:20,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:04:20,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:04:20,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:04:20,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:04:20,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:04:20,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:04:20,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:04:20,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:04:20,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:04:20,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:04:20,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:04:20,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:04:20,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:04:20,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:04:20,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:04:20,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:04:20,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:04:20,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:04:20,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:04:20,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:04:20,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:04:20,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:04:20,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:04:20,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:04:20,406 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 19:04:20,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:04:20,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:04:20,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:04:20,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:04:20,466 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:04:20,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:04:20,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:04:20,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:04:20,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:04:20,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:04:20,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:04:20,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:04:20,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:04:20,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:04:20,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:04:20,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:04:20,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:04:20,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:04:20,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:04:20,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:04:20,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:04:20,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:04:20,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:04:20,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:04:20,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:04:20,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:04:20,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:04:20,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:04:20,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:04:20,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:04:20,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:04:20,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:04:20,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:04:20,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:04:20,935 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:04:20,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04.c [2020-10-27 19:04:21,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe5666721/25b45b6f578a4eb4b512babd90d16371/FLAG433597e84 [2020-10-27 19:04:21,985 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:04:21,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label04.c [2020-10-27 19:04:22,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe5666721/25b45b6f578a4eb4b512babd90d16371/FLAG433597e84 [2020-10-27 19:04:22,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe5666721/25b45b6f578a4eb4b512babd90d16371 [2020-10-27 19:04:22,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:04:22,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:04:22,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:04:22,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:04:22,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:04:22,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:04:22" (1/1) ... [2020-10-27 19:04:22,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d37d0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:22, skipping insertion in model container [2020-10-27 19:04:22,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:04:22" (1/1) ... [2020-10-27 19:04:22,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:04:22,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:04:23,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:04:23,632 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:04:24,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:04:24,092 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:04:24,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24 WrapperNode [2020-10-27 19:04:24,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:04:24,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:04:24,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:04:24,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:04:24,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (1/1) ... [2020-10-27 19:04:24,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (1/1) ... [2020-10-27 19:04:24,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (1/1) ... [2020-10-27 19:04:24,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (1/1) ... [2020-10-27 19:04:24,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (1/1) ... [2020-10-27 19:04:24,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (1/1) ... [2020-10-27 19:04:24,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (1/1) ... [2020-10-27 19:04:24,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:04:24,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:04:24,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:04:24,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:04:24,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (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 19:04:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:04:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:04:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:04:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:04:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:04:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:04:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:04:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:04:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:04:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:04:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:04:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:04:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:04:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:04:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:04:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:04:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:04:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:04:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:04:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:04:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:04:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:04:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:04:28,293 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:04:28,293 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:04:28,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:04:28 BoogieIcfgContainer [2020-10-27 19:04:28,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:04:28,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:04:28,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:04:28,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:04:28,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:04:22" (1/3) ... [2020-10-27 19:04:28,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d70a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:04:28, skipping insertion in model container [2020-10-27 19:04:28,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:04:24" (2/3) ... [2020-10-27 19:04:28,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d70a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:04:28, skipping insertion in model container [2020-10-27 19:04:28,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:04:28" (3/3) ... [2020-10-27 19:04:28,308 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label04.c [2020-10-27 19:04:28,320 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:04:28,326 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:04:28,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:04:28,375 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:04:28,375 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:04:28,375 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:04:28,375 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:04:28,375 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:04:28,376 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:04:28,376 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:04:28,376 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:04:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:04:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 19:04:28,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:28,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:04:28,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1482274536, now seen corresponding path program 1 times [2020-10-27 19:04:28,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:28,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432369331] [2020-10-27 19:04:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 19:04:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-27 19:04:29,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:04:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:04:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 19:04:29,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:04:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:29,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:29,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:29,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 19:04:29,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:04:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:29,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432369331] [2020-10-27 19:04:29,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:04:29,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:04:29,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142275807] [2020-10-27 19:04:29,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:29,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:29,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:29,479 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 19:04:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:42,535 INFO L93 Difference]: Finished difference Result 3021 states and 5797 transitions. [2020-10-27 19:04:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:04:42,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-27 19:04:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:42,565 INFO L225 Difference]: With dead ends: 3021 [2020-10-27 19:04:42,565 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 19:04:42,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:04:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 19:04:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2131. [2020-10-27 19:04:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2131 states. [2020-10-27 19:04:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 3175 transitions. [2020-10-27 19:04:42,772 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 3175 transitions. Word has length 59 [2020-10-27 19:04:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:42,774 INFO L481 AbstractCegarLoop]: Abstraction has 2131 states and 3175 transitions. [2020-10-27 19:04:42,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 3175 transitions. [2020-10-27 19:04:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 19:04:42,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:42,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:04:42,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:04:42,789 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:42,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1014652119, now seen corresponding path program 1 times [2020-10-27 19:04:42,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:42,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944240832] [2020-10-27 19:04:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:42,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:44,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:44,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 19:04:44,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-27 19:04:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 19:04:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 19:04:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:04:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:44,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:44,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:44,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:44,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:04:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:04:44,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:44,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:44,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:04:44,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:44,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 19:04:44,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:04:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:44,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944240832] [2020-10-27 19:04:44,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:44,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:44,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160598034] [2020-10-27 19:04:44,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:44,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:44,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:44,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:44,559 INFO L87 Difference]: Start difference. First operand 2131 states and 3175 transitions. Second operand 5 states. [2020-10-27 19:04:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:55,238 INFO L93 Difference]: Finished difference Result 6398 states and 9600 transitions. [2020-10-27 19:04:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:04:55,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-27 19:04:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:55,274 INFO L225 Difference]: With dead ends: 6398 [2020-10-27 19:04:55,274 INFO L226 Difference]: Without dead ends: 4273 [2020-10-27 19:04:55,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:04:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2020-10-27 19:04:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4269. [2020-10-27 19:04:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4269 states. [2020-10-27 19:04:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 5643 transitions. [2020-10-27 19:04:55,440 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 5643 transitions. Word has length 128 [2020-10-27 19:04:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:55,443 INFO L481 AbstractCegarLoop]: Abstraction has 4269 states and 5643 transitions. [2020-10-27 19:04:55,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:04:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 5643 transitions. [2020-10-27 19:04:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-27 19:04:55,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:55,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:04:55,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:04:55,450 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1061930691, now seen corresponding path program 1 times [2020-10-27 19:04:55,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:55,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925772881] [2020-10-27 19:04:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:56,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:56,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 19:04:56,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-27 19:04:56,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:04:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 19:04:56,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 19:04:56,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:56,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:57,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:57,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:57,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:04:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:57,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:57,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:04:57,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 19:04:57,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 19:04:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:04:57,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925772881] [2020-10-27 19:04:57,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:04:57,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:04:57,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412764960] [2020-10-27 19:04:57,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:04:57,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:04:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:04:57,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:04:57,394 INFO L87 Difference]: Start difference. First operand 4269 states and 5643 transitions. Second operand 5 states. [2020-10-27 19:05:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:07,646 INFO L93 Difference]: Finished difference Result 12787 states and 17069 transitions. [2020-10-27 19:05:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:07,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-27 19:05:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:07,695 INFO L225 Difference]: With dead ends: 12787 [2020-10-27 19:05:07,695 INFO L226 Difference]: Without dead ends: 8524 [2020-10-27 19:05:07,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:05:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8524 states. [2020-10-27 19:05:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8524 to 8520. [2020-10-27 19:05:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8520 states. [2020-10-27 19:05:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8520 states to 8520 states and 10444 transitions. [2020-10-27 19:05:07,951 INFO L78 Accepts]: Start accepts. Automaton has 8520 states and 10444 transitions. Word has length 191 [2020-10-27 19:05:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:07,954 INFO L481 AbstractCegarLoop]: Abstraction has 8520 states and 10444 transitions. [2020-10-27 19:05:07,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 8520 states and 10444 transitions. [2020-10-27 19:05:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-27 19:05:07,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:07,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:05:07,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:05:07,964 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:07,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:07,966 INFO L82 PathProgramCache]: Analyzing trace with hash -709367358, now seen corresponding path program 1 times [2020-10-27 19:05:07,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:07,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617393286] [2020-10-27 19:05:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:09,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:09,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 19:05:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-10-27 19:05:09,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 19:05:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 19:05:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:09,893 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 19:05:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:09,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:09,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:09,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:05:09,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:05:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 19:05:10,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:05:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 19:05:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:05:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 19:05:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:05:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 19:05:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:05:10,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617393286] [2020-10-27 19:05:10,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:10,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:05:10,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388533842] [2020-10-27 19:05:10,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:05:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:10,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:05:10,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:05:10,333 INFO L87 Difference]: Start difference. First operand 8520 states and 10444 transitions. Second operand 7 states. [2020-10-27 19:05:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:23,444 INFO L93 Difference]: Finished difference Result 18551 states and 23641 transitions. [2020-10-27 19:05:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:05:23,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-27 19:05:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:23,496 INFO L225 Difference]: With dead ends: 18551 [2020-10-27 19:05:23,496 INFO L226 Difference]: Without dead ends: 10037 [2020-10-27 19:05:23,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:05:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10037 states. [2020-10-27 19:05:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10037 to 10017. [2020-10-27 19:05:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10017 states. [2020-10-27 19:05:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10017 states to 10017 states and 11930 transitions. [2020-10-27 19:05:23,778 INFO L78 Accepts]: Start accepts. Automaton has 10017 states and 11930 transitions. Word has length 198 [2020-10-27 19:05:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:23,778 INFO L481 AbstractCegarLoop]: Abstraction has 10017 states and 11930 transitions. [2020-10-27 19:05:23,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:05:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 10017 states and 11930 transitions. [2020-10-27 19:05:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-27 19:05:23,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:23,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:23,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:05:23,785 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:23,786 INFO L82 PathProgramCache]: Analyzing trace with hash 876345202, now seen corresponding path program 1 times [2020-10-27 19:05:23,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:23,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203794350] [2020-10-27 19:05:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:25,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:28,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:28,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-27 19:05:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:05:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4738 [2020-10-27 19:05:28,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-27 19:05:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 19:05:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:28,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:28,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:28,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:05:28,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:28,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:28,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:05:28,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:05:28,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:28,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:05:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:28,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 19:05:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 19:05:28,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 19:05:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-27 19:05:29,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203794350] [2020-10-27 19:05:29,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:29,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:29,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568026303] [2020-10-27 19:05:29,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:29,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:29,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:29,051 INFO L87 Difference]: Start difference. First operand 10017 states and 11930 transitions. Second operand 5 states. [2020-10-27 19:05:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:43,249 INFO L93 Difference]: Finished difference Result 28557 states and 34593 transitions. [2020-10-27 19:05:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:05:43,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-10-27 19:05:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:43,321 INFO L225 Difference]: With dead ends: 28557 [2020-10-27 19:05:43,321 INFO L226 Difference]: Without dead ends: 18546 [2020-10-27 19:05:43,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:05:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18546 states. [2020-10-27 19:05:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18546 to 17844. [2020-10-27 19:05:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17844 states. [2020-10-27 19:05:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17844 states to 17844 states and 21183 transitions. [2020-10-27 19:05:43,748 INFO L78 Accepts]: Start accepts. Automaton has 17844 states and 21183 transitions. Word has length 275 [2020-10-27 19:05:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:43,749 INFO L481 AbstractCegarLoop]: Abstraction has 17844 states and 21183 transitions. [2020-10-27 19:05:43,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 17844 states and 21183 transitions. [2020-10-27 19:05:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 19:05:43,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:43,756 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:43,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:05:43,757 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:43,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1366057802, now seen corresponding path program 1 times [2020-10-27 19:05:43,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:43,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769444791] [2020-10-27 19:05:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:47,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:47,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-27 19:05:47,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:05:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4061 [2020-10-27 19:05:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-10-27 19:05:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 19:05:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:48,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:48,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:05:48,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:48,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:48,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:05:48,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 19:05:48,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:05:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:48,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 19:05:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 19:05:48,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 19:05:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 19:05:48,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769444791] [2020-10-27 19:05:48,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:48,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:48,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718475198] [2020-10-27 19:05:48,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:48,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:48,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:48,363 INFO L87 Difference]: Start difference. First operand 17844 states and 21183 transitions. Second operand 5 states. [2020-10-27 19:06:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:00,976 INFO L93 Difference]: Finished difference Result 40670 states and 49611 transitions. [2020-10-27 19:06:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:00,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-10-27 19:06:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:01,077 INFO L225 Difference]: With dead ends: 40670 [2020-10-27 19:06:01,078 INFO L226 Difference]: Without dead ends: 24954 [2020-10-27 19:06:01,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24954 states. [2020-10-27 19:06:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24954 to 24946. [2020-10-27 19:06:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24946 states. [2020-10-27 19:06:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24946 states to 24946 states and 29400 transitions. [2020-10-27 19:06:01,801 INFO L78 Accepts]: Start accepts. Automaton has 24946 states and 29400 transitions. Word has length 277 [2020-10-27 19:06:01,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:01,802 INFO L481 AbstractCegarLoop]: Abstraction has 24946 states and 29400 transitions. [2020-10-27 19:06:01,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24946 states and 29400 transitions. [2020-10-27 19:06:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 19:06:01,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:01,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:06:01,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:06:01,813 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:01,813 INFO L82 PathProgramCache]: Analyzing trace with hash 742941861, now seen corresponding path program 1 times [2020-10-27 19:06:01,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:01,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601276888] [2020-10-27 19:06:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:02,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:06,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-27 19:06:06,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:06:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 19:06:06,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-27 19:06:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 19:06:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:07,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:07,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:06:07,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:06:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:07,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:07,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:06:07,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 19:06:07,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:07,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:06:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:07,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:06:07,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 19:06:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 19:06:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-27 19:06:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:07,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:07,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 19:06:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 19:06:07,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:07,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 19:06:07,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:06:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 19:06:07,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601276888] [2020-10-27 19:06:07,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:07,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:06:07,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227951842] [2020-10-27 19:06:07,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:06:07,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:07,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:06:07,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:06:07,756 INFO L87 Difference]: Start difference. First operand 24946 states and 29400 transitions. Second operand 7 states. [2020-10-27 19:06:31,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:31,067 INFO L93 Difference]: Finished difference Result 67321 states and 82150 transitions. [2020-10-27 19:06:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:06:31,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-27 19:06:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:31,237 INFO L225 Difference]: With dead ends: 67321 [2020-10-27 19:06:31,238 INFO L226 Difference]: Without dead ends: 38776 [2020-10-27 19:06:31,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:06:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38776 states. [2020-10-27 19:06:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38776 to 37352. [2020-10-27 19:06:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37352 states. [2020-10-27 19:06:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37352 states to 37352 states and 43054 transitions. [2020-10-27 19:06:32,125 INFO L78 Accepts]: Start accepts. Automaton has 37352 states and 43054 transitions. Word has length 341 [2020-10-27 19:06:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:32,126 INFO L481 AbstractCegarLoop]: Abstraction has 37352 states and 43054 transitions. [2020-10-27 19:06:32,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:06:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 37352 states and 43054 transitions. [2020-10-27 19:06:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-27 19:06:32,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:32,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:32,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:06:32,139 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash -953215599, now seen corresponding path program 1 times [2020-10-27 19:06:32,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:32,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333499136] [2020-10-27 19:06:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:32,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:36,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-27 19:06:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4139 [2020-10-27 19:06:36,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-27 19:06:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 19:06:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:36,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:36,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:36,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:36,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:06:36,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:36,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:36,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 19:06:36,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 19:06:36,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 19:06:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:37,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:06:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:06:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:06:37,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 19:06:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-27 19:06:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:37,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:37,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 19:06:37,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 19:06:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 19:06:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:06:37,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333499136] [2020-10-27 19:06:37,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:37,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:06:37,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053458913] [2020-10-27 19:06:37,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:06:37,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:37,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:06:37,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:06:37,588 INFO L87 Difference]: Start difference. First operand 37352 states and 43054 transitions. Second operand 7 states. [2020-10-27 19:06:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:49,318 INFO L93 Difference]: Finished difference Result 76127 states and 86988 transitions. [2020-10-27 19:06:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:06:49,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-27 19:06:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:49,430 INFO L225 Difference]: With dead ends: 76127 [2020-10-27 19:06:49,430 INFO L226 Difference]: Without dead ends: 39491 [2020-10-27 19:06:49,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:06:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39491 states. [2020-10-27 19:06:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39491 to 36673. [2020-10-27 19:06:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36673 states. [2020-10-27 19:06:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36673 states to 36673 states and 41578 transitions. [2020-10-27 19:06:50,545 INFO L78 Accepts]: Start accepts. Automaton has 36673 states and 41578 transitions. Word has length 470 [2020-10-27 19:06:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:50,546 INFO L481 AbstractCegarLoop]: Abstraction has 36673 states and 41578 transitions. [2020-10-27 19:06:50,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:06:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 36673 states and 41578 transitions. [2020-10-27 19:06:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2020-10-27 19:06:50,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:50,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:50,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:06:50,594 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:50,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:50,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1887021681, now seen corresponding path program 1 times [2020-10-27 19:06:50,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:50,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610292742] [2020-10-27 19:06:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:52,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:52,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1033 [2020-10-27 19:06:52,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-27 19:06:52,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 19:06:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 19:06:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:06:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:52,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:52,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:06:52,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:52,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:52,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 19:06:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 19:06:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:52,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:06:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:52,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:52,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 19:06:52,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 19:06:52,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:52,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:52,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 19:06:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:06:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:06:52,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 19:06:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:53,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:53,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 19:06:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 19:06:53,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 19:06:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:53,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:06:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:53,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:53,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:06:53,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:06:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:06:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:06:53,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 19:06:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:53,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:53,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 19:06:53,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 19:06:53,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:06:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 19:06:53,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 19:06:54,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610292742] [2020-10-27 19:06:54,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:54,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:06:54,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14424859] [2020-10-27 19:06:54,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:06:54,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:54,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:06:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:06:54,486 INFO L87 Difference]: Start difference. First operand 36673 states and 41578 transitions. Second operand 7 states. [2020-10-27 19:07:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:10,595 INFO L93 Difference]: Finished difference Result 90658 states and 105448 transitions. [2020-10-27 19:07:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:07:10,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1011 [2020-10-27 19:07:10,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:10,759 INFO L225 Difference]: With dead ends: 90658 [2020-10-27 19:07:10,759 INFO L226 Difference]: Without dead ends: 54701 [2020-10-27 19:07:10,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:07:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54701 states. [2020-10-27 19:07:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54701 to 53960. [2020-10-27 19:07:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53960 states. [2020-10-27 19:07:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53960 states to 53960 states and 62082 transitions. [2020-10-27 19:07:11,850 INFO L78 Accepts]: Start accepts. Automaton has 53960 states and 62082 transitions. Word has length 1011 [2020-10-27 19:07:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:11,852 INFO L481 AbstractCegarLoop]: Abstraction has 53960 states and 62082 transitions. [2020-10-27 19:07:11,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:07:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 53960 states and 62082 transitions. [2020-10-27 19:07:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-27 19:07:12,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:12,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:12,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:07:12,208 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1299843242, now seen corresponding path program 1 times [2020-10-27 19:07:12,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:12,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940600285] [2020-10-27 19:07:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:12,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:17,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:17,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1104 [2020-10-27 19:07:17,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:07:17,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 19:07:17,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 665 [2020-10-27 19:07:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-27 19:07:17,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:17,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:17,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:17,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:07:17,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:17,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:18,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:18,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:07:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:18,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:18,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 19:07:18,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 19:07:18,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 19:07:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:18,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:07:18,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:07:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 19:07:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:18,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:18,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:07:18,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 19:07:18,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:07:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:18,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-27 19:07:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:19,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:19,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 19:07:19,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 19:07:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-27 19:07:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2020-10-27 19:07:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:19,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:19,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 19:07:19,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 19:07:19,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-27 19:07:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 568 proven. 138 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2020-10-27 19:07:19,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940600285] [2020-10-27 19:07:19,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:19,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:07:19,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258269330] [2020-10-27 19:07:19,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:07:19,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:19,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:07:19,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:07:19,968 INFO L87 Difference]: Start difference. First operand 53960 states and 62082 transitions. Second operand 7 states. [2020-10-27 19:07:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:34,811 INFO L93 Difference]: Finished difference Result 107342 states and 123926 transitions. [2020-10-27 19:07:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:07:34,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1082 [2020-10-27 19:07:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:34,966 INFO L225 Difference]: With dead ends: 107342 [2020-10-27 19:07:34,966 INFO L226 Difference]: Without dead ends: 54098 [2020-10-27 19:07:35,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:07:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54098 states. [2020-10-27 19:07:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54098 to 54029. [2020-10-27 19:07:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54029 states. [2020-10-27 19:07:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54029 states to 54029 states and 60285 transitions. [2020-10-27 19:07:36,236 INFO L78 Accepts]: Start accepts. Automaton has 54029 states and 60285 transitions. Word has length 1082 [2020-10-27 19:07:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:36,237 INFO L481 AbstractCegarLoop]: Abstraction has 54029 states and 60285 transitions. [2020-10-27 19:07:36,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:07:36,238 INFO L276 IsEmpty]: Start isEmpty. Operand 54029 states and 60285 transitions. [2020-10-27 19:07:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-27 19:07:36,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:36,267 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:36,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:07:36,268 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2140437478, now seen corresponding path program 1 times [2020-10-27 19:07:36,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:36,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143071762] [2020-10-27 19:07:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-27 19:07:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4626 [2020-10-27 19:07:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1047 [2020-10-27 19:07:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 19:07:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:41,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:07:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:41,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:41,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:41,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:41,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 19:07:41,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 19:07:41,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:07:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:41,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:41,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:41,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 19:07:41,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:41,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 19:07:41,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:41,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 19:07:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:41,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:41,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 19:07:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:42,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:42,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 19:07:42,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 19:07:42,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:42,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:42,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:07:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:42,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:42,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:07:42,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:42,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:07:42,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:42,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:42,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:42,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:42,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 19:07:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 19:07:42,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 156 proven. 3 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2020-10-27 19:07:42,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143071762] [2020-10-27 19:07:42,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:42,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:42,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603426006] [2020-10-27 19:07:42,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:07:42,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:42,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:07:42,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:07:42,986 INFO L87 Difference]: Start difference. First operand 54029 states and 60285 transitions. Second operand 5 states. [2020-10-27 19:07:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:55,214 INFO L93 Difference]: Finished difference Result 117921 states and 131645 transitions. [2020-10-27 19:07:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:55,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1086 [2020-10-27 19:07:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:55,377 INFO L225 Difference]: With dead ends: 117921 [2020-10-27 19:07:55,377 INFO L226 Difference]: Without dead ends: 63767 [2020-10-27 19:07:55,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:07:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63767 states. [2020-10-27 19:07:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63767 to 61657. [2020-10-27 19:07:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61657 states. [2020-10-27 19:07:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61657 states to 61657 states and 67187 transitions. [2020-10-27 19:07:56,684 INFO L78 Accepts]: Start accepts. Automaton has 61657 states and 67187 transitions. Word has length 1086 [2020-10-27 19:07:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:56,686 INFO L481 AbstractCegarLoop]: Abstraction has 61657 states and 67187 transitions. [2020-10-27 19:07:56,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 61657 states and 67187 transitions.