/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/array-examples/standard_init5_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:02:29,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:02:29,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:02:29,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:02:29,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:02:29,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:02:29,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:02:29,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:02:29,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:02:29,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:02:29,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:02:29,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:02:29,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:02:29,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:02:29,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:02:29,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:02:29,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:02:29,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:02:29,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:02:29,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:02:29,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:02:29,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:02:29,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:02:29,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:02:29,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:02:29,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:02:29,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:02:29,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:02:29,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:02:29,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:02:29,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:02:29,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:02:29,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:02:29,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:02:29,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:02:29,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:02:29,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:02:29,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:02:29,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:02:29,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:02:29,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:02:29,335 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 [2020-10-28 09:02:29,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:02:29,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:02:29,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:02:29,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:02:29,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:02:29,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:02:29,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:02:29,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:02:29,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:02:29,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:02:29,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:02:29,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:02:29,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:02:29,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:02:29,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:02:29,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:02:29,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:02:29,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:02:29,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:02:29,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:02:29,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:02:29,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:02:29,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:02:29,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:02:29,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:02:29,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:02:29,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:02:29,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:02:29,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:02:29,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:02:29,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:02:29,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:02:29,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:02:29,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:02:29,856 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:02:29,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init5_ground-2.i [2020-10-28 09:02:29,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3276932bd/e0794a961dad4638a4a208e9d7a8c116/FLAGd700f8cfd [2020-10-28 09:02:30,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:02:30,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init5_ground-2.i [2020-10-28 09:02:30,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3276932bd/e0794a961dad4638a4a208e9d7a8c116/FLAGd700f8cfd [2020-10-28 09:02:30,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3276932bd/e0794a961dad4638a4a208e9d7a8c116 [2020-10-28 09:02:30,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:02:30,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:02:30,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:30,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:02:30,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:02:30,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:30" (1/1) ... [2020-10-28 09:02:31,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f1e49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31, skipping insertion in model container [2020-10-28 09:02:31,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:30" (1/1) ... [2020-10-28 09:02:31,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:02:31,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:02:31,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:31,235 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:02:31,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:31,277 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:02:31,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31 WrapperNode [2020-10-28 09:02:31,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:31,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:02:31,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:02:31,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:02:31,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... [2020-10-28 09:02:31,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... [2020-10-28 09:02:31,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... [2020-10-28 09:02:31,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... [2020-10-28 09:02:31,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... [2020-10-28 09:02:31,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... [2020-10-28 09:02:31,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... [2020-10-28 09:02:31,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:02:31,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:02:31,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:02:31,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:02:31,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:02:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:02:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:02:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:02:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:02:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:02:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:02:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:02:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:02:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:02:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:02:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:02:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:02:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:02:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:02:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:02:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:02:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:02:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:02:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:02:31,845 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:02:31,845 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 09:02:31,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:31 BoogieIcfgContainer [2020-10-28 09:02:31,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:02:31,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:02:31,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:02:31,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:02:31,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:02:30" (1/3) ... [2020-10-28 09:02:31,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493ebdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:31, skipping insertion in model container [2020-10-28 09:02:31,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:31" (2/3) ... [2020-10-28 09:02:31,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493ebdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:31, skipping insertion in model container [2020-10-28 09:02:31,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:31" (3/3) ... [2020-10-28 09:02:31,878 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init5_ground-2.i [2020-10-28 09:02:31,898 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:02:31,908 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:02:31,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:02:31,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:02:31,984 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:02:31,984 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:02:31,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:02:31,984 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:02:31,984 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:02:31,985 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:02:31,985 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:02:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-28 09:02:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 09:02:32,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:32,020 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] [2020-10-28 09:02:32,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:32,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash -573516862, now seen corresponding path program 1 times [2020-10-28 09:02:32,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:32,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535672780] [2020-10-28 09:02:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:02:33,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:02:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-28 09:02:33,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:33,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 09:02:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:33,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:02:33,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:33,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:33,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:33,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:33,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 09:02:33,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:33,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:02:33,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535672780] [2020-10-28 09:02:33,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:33,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:02:33,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647954793] [2020-10-28 09:02:33,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:02:33,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:33,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:02:33,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:33,466 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-28 09:02:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:33,597 INFO L93 Difference]: Finished difference Result 62 states and 88 transitions. [2020-10-28 09:02:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:02:33,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-28 09:02:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:33,608 INFO L225 Difference]: With dead ends: 62 [2020-10-28 09:02:33,608 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 09:02:33,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 09:02:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 09:02:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 09:02:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-28 09:02:33,672 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 23 [2020-10-28 09:02:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:33,672 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-28 09:02:33,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:02:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-28 09:02:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 09:02:33,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:33,675 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] [2020-10-28 09:02:33,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:02:33,675 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:33,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:33,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1986210494, now seen corresponding path program 1 times [2020-10-28 09:02:33,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:33,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877810448] [2020-10-28 09:02:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:33,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:34,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:02:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:02:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-28 09:02:34,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:34,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:02:34,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:02:34,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:34,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:34,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:02:34,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:34,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:02:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:02:34,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877810448] [2020-10-28 09:02:34,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:34,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:02:34,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541524526] [2020-10-28 09:02:34,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:02:34,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:34,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:02:34,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:34,433 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-28 09:02:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:34,599 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2020-10-28 09:02:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:02:34,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 09:02:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:34,601 INFO L225 Difference]: With dead ends: 54 [2020-10-28 09:02:34,601 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:02:34,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:02:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 09:02:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:02:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-28 09:02:34,612 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2020-10-28 09:02:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:34,612 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-28 09:02:34,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:02:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-28 09:02:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:02:34,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:34,614 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] [2020-10-28 09:02:34,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:02:34,614 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1849424926, now seen corresponding path program 1 times [2020-10-28 09:02:34,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:34,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528461481] [2020-10-28 09:02:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 09:02:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:02:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:02:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:39,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 09:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:02:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:02:39,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:39,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:02:39,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528461481] [2020-10-28 09:02:39,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:39,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:02:39,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030466084] [2020-10-28 09:02:39,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:02:39,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:39,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:02:39,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:02:39,724 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2020-10-28 09:02:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:39,953 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-28 09:02:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:02:39,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-28 09:02:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:39,956 INFO L225 Difference]: With dead ends: 63 [2020-10-28 09:02:39,956 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 09:02:39,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:02:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 09:02:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-28 09:02:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 09:02:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-28 09:02:39,974 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-10-28 09:02:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:39,975 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-28 09:02:39,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:02:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-28 09:02:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 09:02:39,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:39,979 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:02:39,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:02:39,979 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash -965935426, now seen corresponding path program 2 times [2020-10-28 09:02:39,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:39,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258402155] [2020-10-28 09:02:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:40,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:45,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 09:02:45,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:02:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:02:45,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:45,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:02:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:02:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:02:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:02:45,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:45,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 09:02:45,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258402155] [2020-10-28 09:02:45,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:45,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:02:45,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474463476] [2020-10-28 09:02:45,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:02:45,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:45,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:02:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:02:45,116 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-10-28 09:02:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:45,306 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-28 09:02:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:02:45,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-28 09:02:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:45,310 INFO L225 Difference]: With dead ends: 72 [2020-10-28 09:02:45,310 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 09:02:45,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:02:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 09:02:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-28 09:02:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 09:02:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-28 09:02:45,328 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 33 [2020-10-28 09:02:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:45,329 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-28 09:02:45,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:02:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-28 09:02:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 09:02:45,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:45,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:45,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:02:45,335 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:45,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash -646170978, now seen corresponding path program 3 times [2020-10-28 09:02:45,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:45,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894913968] [2020-10-28 09:02:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:02:50,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:02:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:02:50,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:50,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:02:50,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:02:50,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:02:50,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:50,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:50,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:02:50,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:50,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 09:02:50,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894913968] [2020-10-28 09:02:50,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:50,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:02:50,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270942749] [2020-10-28 09:02:50,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:02:50,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:50,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:02:50,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:02:50,488 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 7 states. [2020-10-28 09:02:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:50,649 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2020-10-28 09:02:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:02:50,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-28 09:02:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:50,651 INFO L225 Difference]: With dead ends: 81 [2020-10-28 09:02:50,651 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 09:02:50,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:02:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 09:02:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-28 09:02:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 09:02:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-28 09:02:50,660 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 38 [2020-10-28 09:02:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:50,661 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-28 09:02:50,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:02:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-28 09:02:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 09:02:50,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:50,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:50,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:02:50,663 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2024852802, now seen corresponding path program 4 times [2020-10-28 09:02:50,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:50,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124558008] [2020-10-28 09:02:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:55,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 09:02:55,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:02:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:02:55,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:55,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:02:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 09:02:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:02:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:55,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:55,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:02:55,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:55,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:55,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 09:02:55,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124558008] [2020-10-28 09:02:55,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:55,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:02:55,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393253485] [2020-10-28 09:02:55,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:02:55,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:55,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:02:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:02:55,836 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 8 states. [2020-10-28 09:02:56,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:56,069 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2020-10-28 09:02:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:02:56,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-28 09:02:56,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:56,072 INFO L225 Difference]: With dead ends: 90 [2020-10-28 09:02:56,072 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 09:02:56,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:02:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 09:02:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-28 09:02:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 09:02:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-28 09:02:56,091 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 43 [2020-10-28 09:02:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:56,091 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-28 09:02:56,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:02:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-28 09:02:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 09:02:56,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:56,096 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:56,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:02:56,096 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:56,097 INFO L82 PathProgramCache]: Analyzing trace with hash -724348642, now seen corresponding path program 5 times [2020-10-28 09:02:56,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:56,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051864761] [2020-10-28 09:02:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:56,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:01,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:03:01,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:03:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:03:01,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:01,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:03:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 09:03:01,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:03:01,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:01,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:01,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:01,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:01,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:01,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 09:03:01,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051864761] [2020-10-28 09:03:01,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:01,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:03:01,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567506787] [2020-10-28 09:03:01,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:03:01,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:01,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:03:01,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:01,270 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 9 states. [2020-10-28 09:03:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:01,472 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2020-10-28 09:03:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:03:01,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-28 09:03:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:01,476 INFO L225 Difference]: With dead ends: 99 [2020-10-28 09:03:01,476 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 09:03:01,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 09:03:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-28 09:03:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:03:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-28 09:03:01,508 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 48 [2020-10-28 09:03:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:01,510 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-28 09:03:01,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:03:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-28 09:03:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:03:01,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:01,512 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:01,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:03:01,512 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1812609346, now seen corresponding path program 6 times [2020-10-28 09:03:01,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:01,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198979649] [2020-10-28 09:03:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:01,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:06,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:03:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:06,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:06,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 09:03:06,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198979649] [2020-10-28 09:03:06,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:06,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:03:06,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766079412] [2020-10-28 09:03:06,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:03:06,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:06,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:03:06,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:06,696 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 10 states. [2020-10-28 09:03:06,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:06,956 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2020-10-28 09:03:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:03:06,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-28 09:03:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:06,958 INFO L225 Difference]: With dead ends: 108 [2020-10-28 09:03:06,958 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 09:03:06,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 09:03:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-28 09:03:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 09:03:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-28 09:03:06,977 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 53 [2020-10-28 09:03:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:06,979 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-28 09:03:06,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:03:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-28 09:03:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 09:03:06,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:06,981 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:06,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:03:06,982 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:06,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1607119970, now seen corresponding path program 7 times [2020-10-28 09:03:06,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:06,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383812736] [2020-10-28 09:03:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:12,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 09:03:12,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:03:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:03:12,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:12,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:03:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:03:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:03:12,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:12,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:12,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:12,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-28 09:03:12,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383812736] [2020-10-28 09:03:12,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:12,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:03:12,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013621654] [2020-10-28 09:03:12,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:03:12,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:03:12,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:12,281 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 11 states. [2020-10-28 09:03:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:12,533 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2020-10-28 09:03:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:03:12,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-28 09:03:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:12,535 INFO L225 Difference]: With dead ends: 117 [2020-10-28 09:03:12,535 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 09:03:12,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 09:03:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-28 09:03:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 09:03:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-10-28 09:03:12,546 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 58 [2020-10-28 09:03:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:12,546 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-10-28 09:03:12,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:03:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-10-28 09:03:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 09:03:12,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:12,548 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:12,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:03:12,548 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:12,548 INFO L82 PathProgramCache]: Analyzing trace with hash 2001517246, now seen corresponding path program 8 times [2020-10-28 09:03:12,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:12,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745336264] [2020-10-28 09:03:12,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:03:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:03:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:17,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:03:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 09:03:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:03:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:17,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:17,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:17,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 09:03:17,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745336264] [2020-10-28 09:03:17,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:17,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:03:17,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113908241] [2020-10-28 09:03:17,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:03:17,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:17,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:03:17,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:17,745 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 12 states. [2020-10-28 09:03:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:18,019 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-10-28 09:03:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:03:18,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-28 09:03:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:18,021 INFO L225 Difference]: With dead ends: 126 [2020-10-28 09:03:18,021 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 09:03:18,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 09:03:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-28 09:03:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 09:03:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-10-28 09:03:18,031 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 63 [2020-10-28 09:03:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:18,032 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-10-28 09:03:18,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:03:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-10-28 09:03:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 09:03:18,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:18,033 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:18,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:03:18,033 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:18,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2073437726, now seen corresponding path program 9 times [2020-10-28 09:03:18,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:18,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340934582] [2020-10-28 09:03:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:18,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 09:03:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:03:23,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:23,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:03:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:03:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:03:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:23,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:23,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:23,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:23,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-28 09:03:23,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340934582] [2020-10-28 09:03:23,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:23,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:03:23,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854024306] [2020-10-28 09:03:23,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:03:23,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:23,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:03:23,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:23,248 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 13 states. [2020-10-28 09:03:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:23,477 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2020-10-28 09:03:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:03:23,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-28 09:03:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:23,479 INFO L225 Difference]: With dead ends: 135 [2020-10-28 09:03:23,479 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 09:03:23,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 09:03:23,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-28 09:03:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 09:03:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-10-28 09:03:23,488 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 68 [2020-10-28 09:03:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:23,489 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-10-28 09:03:23,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:03:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-10-28 09:03:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 09:03:23,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:23,490 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:23,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:03:23,490 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:23,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:23,491 INFO L82 PathProgramCache]: Analyzing trace with hash 742395582, now seen corresponding path program 10 times [2020-10-28 09:03:23,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:23,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083777530] [2020-10-28 09:03:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:28,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 09:03:28,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:03:28,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:28,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:03:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:03:28,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:28,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:28,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:28,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:28,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:28,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:28,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:28,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:28,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:28,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-28 09:03:28,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083777530] [2020-10-28 09:03:28,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:28,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:03:28,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697135088] [2020-10-28 09:03:28,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:03:28,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:03:28,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:28,755 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 14 states. [2020-10-28 09:03:29,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:29,085 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2020-10-28 09:03:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:03:29,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-28 09:03:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:29,088 INFO L225 Difference]: With dead ends: 144 [2020-10-28 09:03:29,088 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 09:03:29,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 09:03:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-28 09:03:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 09:03:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-10-28 09:03:29,117 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 73 [2020-10-28 09:03:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:29,117 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-10-28 09:03:29,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:03:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-10-28 09:03:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 09:03:29,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:29,123 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:29,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:03:29,123 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:29,127 INFO L82 PathProgramCache]: Analyzing trace with hash -420880226, now seen corresponding path program 11 times [2020-10-28 09:03:29,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:29,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439097327] [2020-10-28 09:03:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:29,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:34,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 09:03:34,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:03:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:34,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:03:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 09:03:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 09:03:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:34,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:34,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:34,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:34,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:34,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:34,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-28 09:03:34,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439097327] [2020-10-28 09:03:34,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:34,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:03:34,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928602239] [2020-10-28 09:03:34,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:03:34,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:34,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:03:34,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:34,383 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 15 states. [2020-10-28 09:03:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:34,629 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2020-10-28 09:03:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:03:34,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 78 [2020-10-28 09:03:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:34,631 INFO L225 Difference]: With dead ends: 153 [2020-10-28 09:03:34,631 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 09:03:34,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 09:03:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-28 09:03:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 09:03:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-10-28 09:03:34,639 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 78 [2020-10-28 09:03:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:34,640 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-10-28 09:03:34,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:03:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-10-28 09:03:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 09:03:34,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:34,641 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:34,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:03:34,642 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:34,642 INFO L82 PathProgramCache]: Analyzing trace with hash -574897474, now seen corresponding path program 12 times [2020-10-28 09:03:34,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:34,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229845723] [2020-10-28 09:03:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:39,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:03:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:39,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-28 09:03:39,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229845723] [2020-10-28 09:03:39,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:39,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:03:39,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148627172] [2020-10-28 09:03:39,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:03:39,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:39,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:03:39,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:39,897 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 16 states. [2020-10-28 09:03:40,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:40,211 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-10-28 09:03:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:03:40,212 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 83 [2020-10-28 09:03:40,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:40,213 INFO L225 Difference]: With dead ends: 162 [2020-10-28 09:03:40,213 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 09:03:40,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 09:03:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-28 09:03:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 09:03:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-10-28 09:03:40,224 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 83 [2020-10-28 09:03:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:40,224 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-10-28 09:03:40,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:03:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-10-28 09:03:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 09:03:40,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:40,226 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:40,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:03:40,226 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash -500925666, now seen corresponding path program 13 times [2020-10-28 09:03:40,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:40,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456914063] [2020-10-28 09:03:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:45,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 09:03:45,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:03:45,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:45,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:03:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:03:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:03:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:45,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:45,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:03:45,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:45,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-28 09:03:45,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456914063] [2020-10-28 09:03:45,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:45,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:03:45,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685268301] [2020-10-28 09:03:45,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:03:45,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:45,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:03:45,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:03:45,520 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 17 states. [2020-10-28 09:03:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:45,844 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2020-10-28 09:03:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:03:45,848 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-10-28 09:03:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:45,850 INFO L225 Difference]: With dead ends: 171 [2020-10-28 09:03:45,850 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 09:03:45,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:03:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 09:03:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-28 09:03:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 09:03:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2020-10-28 09:03:45,862 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 88 [2020-10-28 09:03:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:45,862 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2020-10-28 09:03:45,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:03:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2020-10-28 09:03:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 09:03:45,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:45,865 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:45,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:03:45,866 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:45,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1498687810, now seen corresponding path program 14 times [2020-10-28 09:03:45,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:45,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384396530] [2020-10-28 09:03:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 09:03:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:03:50,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:50,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:03:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:03:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:51,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:51,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:51,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:51,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:51,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:51,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:51,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-28 09:03:51,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384396530] [2020-10-28 09:03:51,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:51,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:03:51,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444868410] [2020-10-28 09:03:51,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:03:51,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:51,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:03:51,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:03:51,168 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand 18 states. [2020-10-28 09:03:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:51,485 INFO L93 Difference]: Finished difference Result 180 states and 194 transitions. [2020-10-28 09:03:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:03:51,486 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 93 [2020-10-28 09:03:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:51,487 INFO L225 Difference]: With dead ends: 180 [2020-10-28 09:03:51,487 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 09:03:51,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:03:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 09:03:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-28 09:03:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:03:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-10-28 09:03:51,501 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 93 [2020-10-28 09:03:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:51,501 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-10-28 09:03:51,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:03:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-10-28 09:03:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 09:03:51,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:51,503 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:51,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:03:51,507 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash 758773150, now seen corresponding path program 15 times [2020-10-28 09:03:51,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:51,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551500142] [2020-10-28 09:03:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:03:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:56,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:56,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:03:56,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:56,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-28 09:03:56,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551500142] [2020-10-28 09:03:56,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:56,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:03:56,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996143147] [2020-10-28 09:03:56,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:03:56,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:56,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:03:56,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:03:56,870 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 19 states. [2020-10-28 09:03:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:57,190 INFO L93 Difference]: Finished difference Result 189 states and 203 transitions. [2020-10-28 09:03:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:03:57,191 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 98 [2020-10-28 09:03:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:57,192 INFO L225 Difference]: With dead ends: 189 [2020-10-28 09:03:57,192 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 09:03:57,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:03:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 09:03:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-28 09:03:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 09:03:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2020-10-28 09:03:57,202 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 98 [2020-10-28 09:03:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:57,202 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2020-10-28 09:03:57,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:03:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2020-10-28 09:03:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 09:03:57,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:57,203 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:57,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:03:57,204 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:57,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1375488702, now seen corresponding path program 16 times [2020-10-28 09:03:57,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:57,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587734589] [2020-10-28 09:03:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:04:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:02,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:02,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:02,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:02,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-28 09:04:02,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587734589] [2020-10-28 09:04:02,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:02,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:04:02,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530576919] [2020-10-28 09:04:02,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:04:02,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:02,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:04:02,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:02,560 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand 20 states. [2020-10-28 09:04:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:02,907 INFO L93 Difference]: Finished difference Result 198 states and 212 transitions. [2020-10-28 09:04:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:04:02,908 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-10-28 09:04:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:02,909 INFO L225 Difference]: With dead ends: 198 [2020-10-28 09:04:02,910 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 09:04:02,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 09:04:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-28 09:04:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 09:04:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2020-10-28 09:04:02,920 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 103 [2020-10-28 09:04:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:02,921 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2020-10-28 09:04:02,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:04:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2020-10-28 09:04:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 09:04:02,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:02,922 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:02,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:04:02,923 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:02,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2011279330, now seen corresponding path program 17 times [2020-10-28 09:04:02,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:02,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690904336] [2020-10-28 09:04:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:07,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:07,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 09:04:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:04:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:07,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:04:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 09:04:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:04:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:08,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:08,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:08,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-10-28 09:04:08,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690904336] [2020-10-28 09:04:08,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:08,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:04:08,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437782019] [2020-10-28 09:04:08,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:04:08,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:08,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:04:08,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:08,309 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand 21 states. [2020-10-28 09:04:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:08,637 INFO L93 Difference]: Finished difference Result 207 states and 221 transitions. [2020-10-28 09:04:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:04:08,638 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2020-10-28 09:04:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:08,639 INFO L225 Difference]: With dead ends: 207 [2020-10-28 09:04:08,639 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 09:04:08,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 09:04:08,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-10-28 09:04:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 09:04:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2020-10-28 09:04:08,650 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 108 [2020-10-28 09:04:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:08,650 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2020-10-28 09:04:08,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:04:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2020-10-28 09:04:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 09:04:08,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:08,651 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:08,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:04:08,652 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:08,652 INFO L82 PathProgramCache]: Analyzing trace with hash 446242494, now seen corresponding path program 18 times [2020-10-28 09:04:08,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:08,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827298754] [2020-10-28 09:04:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:13,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:04:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:14,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:14,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-28 09:04:14,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827298754] [2020-10-28 09:04:14,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:14,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:04:14,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448354911] [2020-10-28 09:04:14,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:04:14,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:14,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:04:14,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:14,095 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand 22 states. [2020-10-28 09:04:14,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:14,439 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2020-10-28 09:04:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:04:14,439 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 113 [2020-10-28 09:04:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:14,440 INFO L225 Difference]: With dead ends: 216 [2020-10-28 09:04:14,440 INFO L226 Difference]: Without dead ends: 123 [2020-10-28 09:04:14,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-28 09:04:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-28 09:04:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 09:04:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2020-10-28 09:04:14,455 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 113 [2020-10-28 09:04:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:14,455 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2020-10-28 09:04:14,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:04:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2020-10-28 09:04:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 09:04:14,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:14,457 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:14,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:04:14,457 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash -221934946, now seen corresponding path program 19 times [2020-10-28 09:04:14,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:14,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683465920] [2020-10-28 09:04:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:19,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:04:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:19,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-10-28 09:04:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683465920] [2020-10-28 09:04:19,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:19,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:04:19,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177564452] [2020-10-28 09:04:19,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:04:19,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:19,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:04:19,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:19,897 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand 23 states. [2020-10-28 09:04:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:20,332 INFO L93 Difference]: Finished difference Result 225 states and 239 transitions. [2020-10-28 09:04:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:04:20,332 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 118 [2020-10-28 09:04:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:20,333 INFO L225 Difference]: With dead ends: 225 [2020-10-28 09:04:20,333 INFO L226 Difference]: Without dead ends: 128 [2020-10-28 09:04:20,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-28 09:04:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-28 09:04:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 09:04:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-10-28 09:04:20,345 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 118 [2020-10-28 09:04:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:20,347 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-10-28 09:04:20,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:04:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-10-28 09:04:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 09:04:20,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:20,349 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:20,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:04:20,349 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1802392254, now seen corresponding path program 20 times [2020-10-28 09:04:20,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:20,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097678723] [2020-10-28 09:04:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:25,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:25,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 09:04:25,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:25,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:04:25,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:25,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:04:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:04:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:04:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:25,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:25,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:25,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:25,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:25,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-28 09:04:25,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097678723] [2020-10-28 09:04:25,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:25,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:04:25,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093513214] [2020-10-28 09:04:25,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:04:25,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:25,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:04:25,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:25,864 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 24 states. [2020-10-28 09:04:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:26,255 INFO L93 Difference]: Finished difference Result 234 states and 248 transitions. [2020-10-28 09:04:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:04:26,259 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 123 [2020-10-28 09:04:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:26,260 INFO L225 Difference]: With dead ends: 234 [2020-10-28 09:04:26,260 INFO L226 Difference]: Without dead ends: 133 [2020-10-28 09:04:26,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-28 09:04:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-10-28 09:04:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 09:04:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2020-10-28 09:04:26,270 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 123 [2020-10-28 09:04:26,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:26,270 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2020-10-28 09:04:26,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:04:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2020-10-28 09:04:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 09:04:26,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:26,271 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:26,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:04:26,272 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:26,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:26,272 INFO L82 PathProgramCache]: Analyzing trace with hash -316431074, now seen corresponding path program 21 times [2020-10-28 09:04:26,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:26,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642987379] [2020-10-28 09:04:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:31,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:31,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:04:31,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:31,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:31,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:31,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:31,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:31,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-10-28 09:04:31,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642987379] [2020-10-28 09:04:31,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:31,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:04:31,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944774927] [2020-10-28 09:04:31,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:04:31,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:31,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:04:31,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:31,806 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand 25 states. [2020-10-28 09:04:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:32,171 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2020-10-28 09:04:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:04:32,172 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 128 [2020-10-28 09:04:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:32,173 INFO L225 Difference]: With dead ends: 243 [2020-10-28 09:04:32,173 INFO L226 Difference]: Without dead ends: 138 [2020-10-28 09:04:32,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-28 09:04:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-28 09:04:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 09:04:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 143 transitions. [2020-10-28 09:04:32,181 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 143 transitions. Word has length 128 [2020-10-28 09:04:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:32,182 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 143 transitions. [2020-10-28 09:04:32,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:04:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 143 transitions. [2020-10-28 09:04:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 09:04:32,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:32,183 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:32,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:04:32,184 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:32,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1620580674, now seen corresponding path program 22 times [2020-10-28 09:04:32,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:32,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097625057] [2020-10-28 09:04:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:37,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 09:04:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:04:37,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:37,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:04:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:04:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:04:37,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:37,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:37,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:37,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:37,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:37,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:37,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-28 09:04:37,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097625057] [2020-10-28 09:04:37,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:37,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:04:37,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194993860] [2020-10-28 09:04:37,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:04:37,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:37,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:04:37,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:37,717 INFO L87 Difference]: Start difference. First operand 138 states and 143 transitions. Second operand 26 states. [2020-10-28 09:04:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:38,173 INFO L93 Difference]: Finished difference Result 252 states and 266 transitions. [2020-10-28 09:04:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:04:38,174 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 133 [2020-10-28 09:04:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:38,176 INFO L225 Difference]: With dead ends: 252 [2020-10-28 09:04:38,176 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 09:04:38,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 09:04:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-28 09:04:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-28 09:04:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 148 transitions. [2020-10-28 09:04:38,185 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 148 transitions. Word has length 133 [2020-10-28 09:04:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:38,185 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 148 transitions. [2020-10-28 09:04:38,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:04:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 148 transitions. [2020-10-28 09:04:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 09:04:38,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:38,187 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:38,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:04:38,188 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1221812322, now seen corresponding path program 23 times [2020-10-28 09:04:38,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:38,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701005076] [2020-10-28 09:04:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:43,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:43,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 09:04:43,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:04:43,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:43,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:04:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:04:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:04:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:43,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-10-28 09:04:43,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701005076] [2020-10-28 09:04:43,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:43,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:04:43,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803324336] [2020-10-28 09:04:43,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:04:43,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:43,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:04:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:04:43,769 INFO L87 Difference]: Start difference. First operand 143 states and 148 transitions. Second operand 27 states. [2020-10-28 09:04:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:44,279 INFO L93 Difference]: Finished difference Result 261 states and 275 transitions. [2020-10-28 09:04:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:04:44,280 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 138 [2020-10-28 09:04:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:44,281 INFO L225 Difference]: With dead ends: 261 [2020-10-28 09:04:44,281 INFO L226 Difference]: Without dead ends: 148 [2020-10-28 09:04:44,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:04:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-28 09:04:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-10-28 09:04:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-28 09:04:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 153 transitions. [2020-10-28 09:04:44,290 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 153 transitions. Word has length 138 [2020-10-28 09:04:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:44,291 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 153 transitions. [2020-10-28 09:04:44,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:04:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 153 transitions. [2020-10-28 09:04:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 09:04:44,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:44,292 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:44,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:04:44,293 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1049503042, now seen corresponding path program 24 times [2020-10-28 09:04:44,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:44,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459339595] [2020-10-28 09:04:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:44,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 09:04:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:04:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:49,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:04:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 09:04:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:04:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:49,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:49,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:49,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:49,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:49,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-28 09:04:49,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459339595] [2020-10-28 09:04:49,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:49,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:04:49,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358326214] [2020-10-28 09:04:49,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:04:49,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:04:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:04:49,931 INFO L87 Difference]: Start difference. First operand 148 states and 153 transitions. Second operand 28 states. [2020-10-28 09:04:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:50,341 INFO L93 Difference]: Finished difference Result 270 states and 284 transitions. [2020-10-28 09:04:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:04:50,341 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 143 [2020-10-28 09:04:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:50,343 INFO L225 Difference]: With dead ends: 270 [2020-10-28 09:04:50,343 INFO L226 Difference]: Without dead ends: 153 [2020-10-28 09:04:50,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:04:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-28 09:04:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-10-28 09:04:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-28 09:04:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 158 transitions. [2020-10-28 09:04:50,355 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 158 transitions. Word has length 143 [2020-10-28 09:04:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:50,356 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 158 transitions. [2020-10-28 09:04:50,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:04:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 158 transitions. [2020-10-28 09:04:50,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 09:04:50,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:50,357 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:50,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:04:50,357 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:50,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1865123298, now seen corresponding path program 25 times [2020-10-28 09:04:50,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:50,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781629013] [2020-10-28 09:04:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:55,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:55,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:04:55,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:55,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:04:55,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:55,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-10-28 09:04:55,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781629013] [2020-10-28 09:04:55,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:55,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:04:55,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975757193] [2020-10-28 09:04:55,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:04:55,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:55,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:04:55,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:04:55,988 INFO L87 Difference]: Start difference. First operand 153 states and 158 transitions. Second operand 29 states. [2020-10-28 09:04:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:56,443 INFO L93 Difference]: Finished difference Result 279 states and 293 transitions. [2020-10-28 09:04:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:04:56,444 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 148 [2020-10-28 09:04:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:56,445 INFO L225 Difference]: With dead ends: 279 [2020-10-28 09:04:56,445 INFO L226 Difference]: Without dead ends: 158 [2020-10-28 09:04:56,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:04:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-28 09:04:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-28 09:04:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-28 09:04:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2020-10-28 09:04:56,460 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 148 [2020-10-28 09:04:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:56,460 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2020-10-28 09:04:56,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:04:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2020-10-28 09:04:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 09:04:56,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:56,462 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:56,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:04:56,462 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:56,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1282944702, now seen corresponding path program 26 times [2020-10-28 09:04:56,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:56,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471282380] [2020-10-28 09:04:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:58,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:05:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:05:01,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:02,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:02,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:02,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:02,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:02,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:02,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-28 09:05:02,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471282380] [2020-10-28 09:05:02,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:02,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:05:02,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012968215] [2020-10-28 09:05:02,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:05:02,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:02,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:05:02,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:02,297 INFO L87 Difference]: Start difference. First operand 158 states and 163 transitions. Second operand 30 states. [2020-10-28 09:05:02,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:02,832 INFO L93 Difference]: Finished difference Result 288 states and 302 transitions. [2020-10-28 09:05:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:05:02,833 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 153 [2020-10-28 09:05:02,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:02,834 INFO L225 Difference]: With dead ends: 288 [2020-10-28 09:05:02,834 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 09:05:02,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 09:05:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-28 09:05:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 09:05:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 168 transitions. [2020-10-28 09:05:02,843 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 168 transitions. Word has length 153 [2020-10-28 09:05:02,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:02,843 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 168 transitions. [2020-10-28 09:05:02,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:05:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 168 transitions. [2020-10-28 09:05:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 09:05:02,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:02,844 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:02,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:05:02,845 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash -99666786, now seen corresponding path program 27 times [2020-10-28 09:05:02,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:02,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716933869] [2020-10-28 09:05:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:05:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:05:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:08,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:08,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:08,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:08,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:08,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-10-28 09:05:08,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716933869] [2020-10-28 09:05:08,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:08,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:05:08,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473993736] [2020-10-28 09:05:08,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:05:08,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:08,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:05:08,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:08,570 INFO L87 Difference]: Start difference. First operand 163 states and 168 transitions. Second operand 31 states. [2020-10-28 09:05:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:09,148 INFO L93 Difference]: Finished difference Result 297 states and 311 transitions. [2020-10-28 09:05:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:05:09,149 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 158 [2020-10-28 09:05:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:09,150 INFO L225 Difference]: With dead ends: 297 [2020-10-28 09:05:09,150 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 09:05:09,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 09:05:09,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-10-28 09:05:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-28 09:05:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 173 transitions. [2020-10-28 09:05:09,160 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 173 transitions. Word has length 158 [2020-10-28 09:05:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:09,160 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 173 transitions. [2020-10-28 09:05:09,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:05:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 173 transitions. [2020-10-28 09:05:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 09:05:09,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:09,161 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:09,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:05:09,162 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:09,162 INFO L82 PathProgramCache]: Analyzing trace with hash -345578818, now seen corresponding path program 28 times [2020-10-28 09:05:09,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:09,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601245814] [2020-10-28 09:05:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:05:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:05:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:05:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:14,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:14,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:14,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:14,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:14,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:14,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:14,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-28 09:05:14,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601245814] [2020-10-28 09:05:14,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:14,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:05:14,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163300640] [2020-10-28 09:05:14,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:05:14,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:14,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:05:14,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:14,973 INFO L87 Difference]: Start difference. First operand 168 states and 173 transitions. Second operand 32 states. [2020-10-28 09:05:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:15,495 INFO L93 Difference]: Finished difference Result 306 states and 320 transitions. [2020-10-28 09:05:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:05:15,495 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 163 [2020-10-28 09:05:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:15,496 INFO L225 Difference]: With dead ends: 306 [2020-10-28 09:05:15,497 INFO L226 Difference]: Without dead ends: 173 [2020-10-28 09:05:15,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-28 09:05:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2020-10-28 09:05:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-28 09:05:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 178 transitions. [2020-10-28 09:05:15,507 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 178 transitions. Word has length 163 [2020-10-28 09:05:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:15,507 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 178 transitions. [2020-10-28 09:05:15,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:05:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 178 transitions. [2020-10-28 09:05:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 09:05:15,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:15,509 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:15,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:05:15,509 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash -221196514, now seen corresponding path program 29 times [2020-10-28 09:05:15,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:15,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857107275] [2020-10-28 09:05:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:20,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:20,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 09:05:20,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 09:05:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:05:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 09:05:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 09:05:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:21,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:21,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:21,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:21,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-10-28 09:05:21,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857107275] [2020-10-28 09:05:21,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:21,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:05:21,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91499628] [2020-10-28 09:05:21,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:05:21,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:21,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:05:21,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:21,426 INFO L87 Difference]: Start difference. First operand 173 states and 178 transitions. Second operand 33 states. [2020-10-28 09:05:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:21,915 INFO L93 Difference]: Finished difference Result 315 states and 329 transitions. [2020-10-28 09:05:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:05:21,921 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 168 [2020-10-28 09:05:21,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:21,922 INFO L225 Difference]: With dead ends: 315 [2020-10-28 09:05:21,922 INFO L226 Difference]: Without dead ends: 178 [2020-10-28 09:05:21,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:21,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-28 09:05:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-28 09:05:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:05:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 183 transitions. [2020-10-28 09:05:21,931 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 183 transitions. Word has length 168 [2020-10-28 09:05:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:21,931 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 183 transitions. [2020-10-28 09:05:21,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:05:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 183 transitions. [2020-10-28 09:05:21,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 09:05:21,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:21,932 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:21,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:05:21,933 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash 959051454, now seen corresponding path program 30 times [2020-10-28 09:05:21,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:21,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405830518] [2020-10-28 09:05:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:22,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:23,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:27,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:05:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:27,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:27,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:27,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-28 09:05:27,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405830518] [2020-10-28 09:05:27,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:27,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:05:27,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502902853] [2020-10-28 09:05:27,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:05:27,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:27,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:05:27,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:27,896 INFO L87 Difference]: Start difference. First operand 178 states and 183 transitions. Second operand 34 states. [2020-10-28 09:05:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:28,535 INFO L93 Difference]: Finished difference Result 324 states and 338 transitions. [2020-10-28 09:05:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:05:28,536 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 173 [2020-10-28 09:05:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:28,538 INFO L225 Difference]: With dead ends: 324 [2020-10-28 09:05:28,538 INFO L226 Difference]: Without dead ends: 183 [2020-10-28 09:05:28,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-28 09:05:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-10-28 09:05:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 09:05:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 188 transitions. [2020-10-28 09:05:28,548 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 188 transitions. Word has length 173 [2020-10-28 09:05:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:28,548 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 188 transitions. [2020-10-28 09:05:28,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:05:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 188 transitions. [2020-10-28 09:05:28,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 09:05:28,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:28,549 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:28,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:05:28,549 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:28,550 INFO L82 PathProgramCache]: Analyzing trace with hash 990726558, now seen corresponding path program 31 times [2020-10-28 09:05:28,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:28,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215833845] [2020-10-28 09:05:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:33,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:33,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 09:05:33,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 09:05:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:33,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:05:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 09:05:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 09:05:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:34,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:34,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:34,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:34,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:34,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:05:34,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:34,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-10-28 09:05:34,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215833845] [2020-10-28 09:05:34,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:34,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:05:34,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343101322] [2020-10-28 09:05:34,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:05:34,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:34,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:05:34,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:34,458 INFO L87 Difference]: Start difference. First operand 183 states and 188 transitions. Second operand 35 states. [2020-10-28 09:05:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:35,023 INFO L93 Difference]: Finished difference Result 333 states and 347 transitions. [2020-10-28 09:05:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:05:35,023 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 178 [2020-10-28 09:05:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:35,025 INFO L225 Difference]: With dead ends: 333 [2020-10-28 09:05:35,025 INFO L226 Difference]: Without dead ends: 188 [2020-10-28 09:05:35,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-28 09:05:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-28 09:05:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-28 09:05:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 193 transitions. [2020-10-28 09:05:35,034 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 193 transitions. Word has length 178 [2020-10-28 09:05:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:35,035 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 193 transitions. [2020-10-28 09:05:35,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:05:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 193 transitions. [2020-10-28 09:05:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-28 09:05:35,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:35,036 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:35,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:05:35,037 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:35,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:35,037 INFO L82 PathProgramCache]: Analyzing trace with hash -2136118594, now seen corresponding path program 32 times [2020-10-28 09:05:35,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:35,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287958080] [2020-10-28 09:05:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:40,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:05:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:41,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:41,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:41,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:05:41,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:41,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-28 09:05:41,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287958080] [2020-10-28 09:05:41,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:41,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:05:41,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004439044] [2020-10-28 09:05:41,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:05:41,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:41,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:05:41,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:05:41,061 INFO L87 Difference]: Start difference. First operand 188 states and 193 transitions. Second operand 36 states. [2020-10-28 09:05:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:41,747 INFO L93 Difference]: Finished difference Result 342 states and 356 transitions. [2020-10-28 09:05:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:05:41,748 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 183 [2020-10-28 09:05:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:41,750 INFO L225 Difference]: With dead ends: 342 [2020-10-28 09:05:41,753 INFO L226 Difference]: Without dead ends: 193 [2020-10-28 09:05:41,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:05:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-28 09:05:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-10-28 09:05:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 09:05:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 198 transitions. [2020-10-28 09:05:41,762 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 198 transitions. Word has length 183 [2020-10-28 09:05:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:41,762 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 198 transitions. [2020-10-28 09:05:41,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:05:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 198 transitions. [2020-10-28 09:05:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 09:05:41,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:41,764 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:41,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:05:41,764 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:41,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1833393122, now seen corresponding path program 33 times [2020-10-28 09:05:41,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:41,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153319906] [2020-10-28 09:05:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 09:05:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 09:05:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:05:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:47,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:47,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:47,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:47,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:47,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:47,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-10-28 09:05:47,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153319906] [2020-10-28 09:05:47,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:47,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 09:05:47,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409166722] [2020-10-28 09:05:47,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 09:05:47,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 09:05:47,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:05:47,828 INFO L87 Difference]: Start difference. First operand 193 states and 198 transitions. Second operand 37 states. [2020-10-28 09:05:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:48,373 INFO L93 Difference]: Finished difference Result 351 states and 365 transitions. [2020-10-28 09:05:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:05:48,373 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 188 [2020-10-28 09:05:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:48,375 INFO L225 Difference]: With dead ends: 351 [2020-10-28 09:05:48,375 INFO L226 Difference]: Without dead ends: 198 [2020-10-28 09:05:48,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:05:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-28 09:05:48,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-28 09:05:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-28 09:05:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 203 transitions. [2020-10-28 09:05:48,384 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 203 transitions. Word has length 188 [2020-10-28 09:05:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:48,384 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 203 transitions. [2020-10-28 09:05:48,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 09:05:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 203 transitions. [2020-10-28 09:05:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 09:05:48,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:48,385 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:48,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:05:48,386 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:48,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2094874302, now seen corresponding path program 34 times [2020-10-28 09:05:48,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:48,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564731586] [2020-10-28 09:05:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:53,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:05:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:54,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:54,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:54,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:54,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:54,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-28 09:05:54,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564731586] [2020-10-28 09:05:54,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:54,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-28 09:05:54,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228619186] [2020-10-28 09:05:54,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-28 09:05:54,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:54,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-28 09:05:54,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:05:54,490 INFO L87 Difference]: Start difference. First operand 198 states and 203 transitions. Second operand 38 states. [2020-10-28 09:05:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:55,167 INFO L93 Difference]: Finished difference Result 360 states and 374 transitions. [2020-10-28 09:05:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:05:55,168 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 193 [2020-10-28 09:05:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:55,170 INFO L225 Difference]: With dead ends: 360 [2020-10-28 09:05:55,170 INFO L226 Difference]: Without dead ends: 203 [2020-10-28 09:05:55,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:05:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-28 09:05:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-28 09:05:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-28 09:05:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 208 transitions. [2020-10-28 09:05:55,179 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 208 transitions. Word has length 193 [2020-10-28 09:05:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:55,179 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 208 transitions. [2020-10-28 09:05:55,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-28 09:05:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 208 transitions. [2020-10-28 09:05:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-28 09:05:55,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:55,181 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:55,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:05:55,181 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash -104407394, now seen corresponding path program 35 times [2020-10-28 09:05:55,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:55,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074270802] [2020-10-28 09:05:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:55,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:00,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 09:06:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:01,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:01,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:01,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:01,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:06:01,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:01,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-10-28 09:06:01,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074270802] [2020-10-28 09:06:01,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:01,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-28 09:06:01,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309691526] [2020-10-28 09:06:01,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-28 09:06:01,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:01,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-28 09:06:01,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:01,382 INFO L87 Difference]: Start difference. First operand 203 states and 208 transitions. Second operand 39 states. [2020-10-28 09:06:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:01,957 INFO L93 Difference]: Finished difference Result 369 states and 383 transitions. [2020-10-28 09:06:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 09:06:01,957 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 198 [2020-10-28 09:06:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:01,959 INFO L225 Difference]: With dead ends: 369 [2020-10-28 09:06:01,960 INFO L226 Difference]: Without dead ends: 208 [2020-10-28 09:06:01,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-28 09:06:01,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-10-28 09:06:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-28 09:06:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 213 transitions. [2020-10-28 09:06:01,969 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 213 transitions. Word has length 198 [2020-10-28 09:06:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:01,969 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 213 transitions. [2020-10-28 09:06:01,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-28 09:06:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 213 transitions. [2020-10-28 09:06:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 09:06:01,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:01,970 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:01,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:06:01,970 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:01,971 INFO L82 PathProgramCache]: Analyzing trace with hash 413495998, now seen corresponding path program 36 times [2020-10-28 09:06:01,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:01,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989014160] [2020-10-28 09:06:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:02,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:02,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:07,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:06:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-28 09:06:08,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989014160] [2020-10-28 09:06:08,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:08,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-28 09:06:08,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222602540] [2020-10-28 09:06:08,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-28 09:06:08,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-28 09:06:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:06:08,200 INFO L87 Difference]: Start difference. First operand 208 states and 213 transitions. Second operand 40 states. [2020-10-28 09:06:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:08,814 INFO L93 Difference]: Finished difference Result 378 states and 392 transitions. [2020-10-28 09:06:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 09:06:08,814 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 203 [2020-10-28 09:06:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:08,816 INFO L225 Difference]: With dead ends: 378 [2020-10-28 09:06:08,816 INFO L226 Difference]: Without dead ends: 213 [2020-10-28 09:06:08,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:06:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-28 09:06:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-28 09:06:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-28 09:06:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 218 transitions. [2020-10-28 09:06:08,825 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 218 transitions. Word has length 203 [2020-10-28 09:06:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:08,825 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 218 transitions. [2020-10-28 09:06:08,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-28 09:06:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 218 transitions. [2020-10-28 09:06:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-28 09:06:08,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:08,827 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:08,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:06:08,827 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash -265553634, now seen corresponding path program 37 times [2020-10-28 09:06:08,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:08,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592298898] [2020-10-28 09:06:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:09,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-28 09:06:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 09:06:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:15,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:15,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:15,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:15,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-10-28 09:06:15,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592298898] [2020-10-28 09:06:15,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:15,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-28 09:06:15,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876763752] [2020-10-28 09:06:15,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-28 09:06:15,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:15,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-28 09:06:15,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 09:06:15,181 INFO L87 Difference]: Start difference. First operand 213 states and 218 transitions. Second operand 41 states. [2020-10-28 09:06:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:15,978 INFO L93 Difference]: Finished difference Result 387 states and 401 transitions. [2020-10-28 09:06:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-28 09:06:15,979 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 208 [2020-10-28 09:06:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:15,981 INFO L225 Difference]: With dead ends: 387 [2020-10-28 09:06:15,981 INFO L226 Difference]: Without dead ends: 218 [2020-10-28 09:06:15,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 09:06:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-28 09:06:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-28 09:06:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-28 09:06:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 223 transitions. [2020-10-28 09:06:15,989 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 223 transitions. Word has length 208 [2020-10-28 09:06:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:15,989 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 223 transitions. [2020-10-28 09:06:15,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-28 09:06:15,989 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 223 transitions. [2020-10-28 09:06:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 09:06:15,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:15,990 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:15,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:06:15,990 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:15,991 INFO L82 PathProgramCache]: Analyzing trace with hash 787613374, now seen corresponding path program 38 times [2020-10-28 09:06:15,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:15,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341538250] [2020-10-28 09:06:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:16,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:21,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 09:06:21,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:06:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 09:06:21,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:21,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-28 09:06:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 09:06:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 09:06:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:22,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:22,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:22,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-28 09:06:22,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341538250] [2020-10-28 09:06:22,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:22,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-28 09:06:22,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317902929] [2020-10-28 09:06:22,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-28 09:06:22,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:22,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-28 09:06:22,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:06:22,382 INFO L87 Difference]: Start difference. First operand 218 states and 223 transitions. Second operand 42 states. [2020-10-28 09:06:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:23,198 INFO L93 Difference]: Finished difference Result 396 states and 410 transitions. [2020-10-28 09:06:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 09:06:23,199 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 213 [2020-10-28 09:06:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:23,201 INFO L225 Difference]: With dead ends: 396 [2020-10-28 09:06:23,201 INFO L226 Difference]: Without dead ends: 223 [2020-10-28 09:06:23,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:06:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-28 09:06:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-10-28 09:06:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-28 09:06:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 228 transitions. [2020-10-28 09:06:23,211 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 228 transitions. Word has length 213 [2020-10-28 09:06:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:23,211 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 228 transitions. [2020-10-28 09:06:23,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-28 09:06:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 228 transitions. [2020-10-28 09:06:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 09:06:23,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:23,213 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:23,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:06:23,213 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1243876450, now seen corresponding path program 39 times [2020-10-28 09:06:23,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:23,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140484868] [2020-10-28 09:06:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:23,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking...