/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_copyInit_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:58:35,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:58:35,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:58:35,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:58:35,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:58:35,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:58:35,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:58:35,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:58:35,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:58:35,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:58:35,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:58:35,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:58:35,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:58:35,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:58:35,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:58:35,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:58:35,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:58:35,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:58:35,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:58:35,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:58:35,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:58:35,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:58:35,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:58:35,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:58:35,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:58:35,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:58:35,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:58:35,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:58:35,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:58:35,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:58:35,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:58:35,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:58:35,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:58:35,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:58:35,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:58:35,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:58:35,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:58:35,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:58:35,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:58:35,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:58:35,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:58:35,284 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 08:58:35,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:58:35,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:58:35,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:58:35,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:58:35,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:58:35,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:58:35,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:58:35,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:58:35,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:58:35,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:58:35,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:58:35,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:58:35,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:58:35,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:58:35,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:58:35,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:58:35,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:58:35,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:58:35,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:58:35,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:58:35,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:58:35,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:58:35,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:58:35,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:58:35,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:58:35,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:58:35,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:58:35,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:58:35,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:58:35,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:58:35,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:58:35,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:58:35,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:58:35,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:58:35,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:58:35,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInit_ground.i [2020-10-28 08:58:35,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bee3f426f/a1b5b2131f1f4bb09626f8b47f7b4bdc/FLAG2e3e05121 [2020-10-28 08:58:36,495 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:58:36,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInit_ground.i [2020-10-28 08:58:36,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bee3f426f/a1b5b2131f1f4bb09626f8b47f7b4bdc/FLAG2e3e05121 [2020-10-28 08:58:36,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bee3f426f/a1b5b2131f1f4bb09626f8b47f7b4bdc [2020-10-28 08:58:36,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:58:36,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:58:36,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:58:36,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:58:36,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:58:36,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:58:36" (1/1) ... [2020-10-28 08:58:36,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a85f75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:36, skipping insertion in model container [2020-10-28 08:58:36,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:58:36" (1/1) ... [2020-10-28 08:58:36,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:58:36,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:58:37,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:58:37,097 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:58:37,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:58:37,136 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:58:37,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37 WrapperNode [2020-10-28 08:58:37,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:58:37,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:58:37,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:58:37,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:58:37,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (1/1) ... [2020-10-28 08:58:37,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (1/1) ... [2020-10-28 08:58:37,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (1/1) ... [2020-10-28 08:58:37,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (1/1) ... [2020-10-28 08:58:37,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (1/1) ... [2020-10-28 08:58:37,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (1/1) ... [2020-10-28 08:58:37,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (1/1) ... [2020-10-28 08:58:37,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:58:37,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:58:37,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:58:37,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:58:37,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (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 08:58:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:58:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:58:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:58:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:58:37,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:58:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:58:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:58:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:58:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:58:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:58:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:58:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:58:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:58:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:58:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:58:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:58:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:58:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:58:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:58:37,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:58:37,567 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:58:37,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:58:37 BoogieIcfgContainer [2020-10-28 08:58:37,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:58:37,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:58:37,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:58:37,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:58:37,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:58:36" (1/3) ... [2020-10-28 08:58:37,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74654df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:58:37, skipping insertion in model container [2020-10-28 08:58:37,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:37" (2/3) ... [2020-10-28 08:58:37,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74654df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:58:37, skipping insertion in model container [2020-10-28 08:58:37,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:58:37" (3/3) ... [2020-10-28 08:58:37,611 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copyInit_ground.i [2020-10-28 08:58:37,647 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:58:37,658 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:58:37,696 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:58:37,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:58:37,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:58:37,755 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:58:37,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:58:37,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:58:37,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:58:37,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:58:37,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:58:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-28 08:58:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 08:58:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:37,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:37,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:37,807 INFO L82 PathProgramCache]: Analyzing trace with hash 576468936, now seen corresponding path program 1 times [2020-10-28 08:58:37,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:37,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460434477] [2020-10-28 08:58:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:38,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:38,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 08:58:38,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-28 08:58:38,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:38,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 08:58:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 08:58:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:38,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:38,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:38,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:58:38,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:38,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:38,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:38,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:38,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:38,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:38,421 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 08:58:38,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460434477] [2020-10-28 08:58:38,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:58:38,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 08:58:38,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596818716] [2020-10-28 08:58:38,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:58:38,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:38,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:58:38,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:58:38,450 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-28 08:58:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:38,541 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2020-10-28 08:58:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:58:38,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-28 08:58:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:38,552 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:58:38,552 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 08:58:38,556 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 08:58:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 08:58:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-28 08:58:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 08:58:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-28 08:58:38,600 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2020-10-28 08:58:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:38,601 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-28 08:58:38,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:58:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-28 08:58:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 08:58:38,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:38,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:38,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:58:38,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:38,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1463706174, now seen corresponding path program 1 times [2020-10-28 08:58:38,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:38,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022067674] [2020-10-28 08:58:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:38,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:38,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:38,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:38,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 08:58:38,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 08:58:38,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:38,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:58:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:58:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:58:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:38,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:38,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:58:38,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:38,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:38,914 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 08:58:38,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022067674] [2020-10-28 08:58:38,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:58:38,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:58:38,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371324679] [2020-10-28 08:58:38,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:58:38,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:38,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:58:38,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:58:38,918 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-10-28 08:58:38,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:38,998 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-28 08:58:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:58:38,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 08:58:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:39,000 INFO L225 Difference]: With dead ends: 42 [2020-10-28 08:58:39,000 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 08:58:39,002 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 08:58:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 08:58:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-28 08:58:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-28 08:58:39,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-28 08:58:39,011 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2020-10-28 08:58:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:39,011 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-28 08:58:39,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:58:39,012 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-28 08:58:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 08:58:39,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:39,013 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] [2020-10-28 08:58:39,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:58:39,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:39,014 INFO L82 PathProgramCache]: Analyzing trace with hash 21436462, now seen corresponding path program 1 times [2020-10-28 08:58:39,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:39,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790193510] [2020-10-28 08:58:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:39,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:39,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:58:39,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-28 08:58:39,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:39,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:58:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 08:58:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:58:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:39,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:58:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:39,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 08:58:39,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790193510] [2020-10-28 08:58:39,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:39,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:58:39,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167977753] [2020-10-28 08:58:39,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:58:39,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:39,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:58:39,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:58:39,877 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-28 08:58:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:39,974 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-28 08:58:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:58:39,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-28 08:58:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:39,975 INFO L225 Difference]: With dead ends: 46 [2020-10-28 08:58:39,975 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 08:58:39,976 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 08:58:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 08:58:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-28 08:58:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:58:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-28 08:58:39,984 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-10-28 08:58:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:39,985 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-28 08:58:39,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:58:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-28 08:58:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 08:58:39,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:39,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:39,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:58:39,986 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:39,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:39,987 INFO L82 PathProgramCache]: Analyzing trace with hash 848978942, now seen corresponding path program 2 times [2020-10-28 08:58:39,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:39,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104847793] [2020-10-28 08:58:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:41,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:41,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 08:58:41,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:41,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-28 08:58:41,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:41,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:41,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:58:41,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 08:58:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:58:41,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:41,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:41,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:41,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:41,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:41,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:58:41,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:41,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 08:58:41,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104847793] [2020-10-28 08:58:41,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:41,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:58:41,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076668893] [2020-10-28 08:58:41,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:58:41,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:41,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:58:41,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:58:41,151 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-10-28 08:58:41,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:41,233 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-28 08:58:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:58:41,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-28 08:58:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:41,234 INFO L225 Difference]: With dead ends: 51 [2020-10-28 08:58:41,234 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:58:41,235 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 08:58:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:58:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 08:58:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 08:58:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-28 08:58:41,242 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2020-10-28 08:58:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:41,243 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-28 08:58:41,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:58:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-28 08:58:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 08:58:41,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:41,244 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:41,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:58:41,244 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:41,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1315648746, now seen corresponding path program 3 times [2020-10-28 08:58:41,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:41,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258189870] [2020-10-28 08:58:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:41,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:42,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:58:42,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:42,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-28 08:58:42,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:42,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:58:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 08:58:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:58:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:42,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:42,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:42,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:58:42,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:42,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 08:58:42,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258189870] [2020-10-28 08:58:42,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:42,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:58:42,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681562934] [2020-10-28 08:58:42,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:58:42,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:42,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:58:42,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:58:42,438 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 7 states. [2020-10-28 08:58:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:42,533 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-10-28 08:58:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:58:42,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-28 08:58:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:42,535 INFO L225 Difference]: With dead ends: 56 [2020-10-28 08:58:42,535 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:58:42,535 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 08:58:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:58:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 08:58:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 08:58:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-28 08:58:42,542 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 26 [2020-10-28 08:58:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:42,543 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-28 08:58:42,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:58:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-28 08:58:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 08:58:42,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:42,544 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:42,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:58:42,544 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:42,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1585423302, now seen corresponding path program 4 times [2020-10-28 08:58:42,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:42,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574262409] [2020-10-28 08:58:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:42,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:44,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:44,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 08:58:44,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:44,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2408 [2020-10-28 08:58:44,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:44,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:58:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:58:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:58:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:45,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:45,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:45,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:58:45,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:45,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 08:58:45,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574262409] [2020-10-28 08:58:45,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:45,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:58:45,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856224284] [2020-10-28 08:58:45,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:58:45,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:45,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:58:45,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:58:45,090 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 8 states. [2020-10-28 08:58:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:45,224 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 08:58:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:58:45,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-28 08:58:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:45,226 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:58:45,226 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 08:58:45,227 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 08:58:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 08:58:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 08:58:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 08:58:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-28 08:58:45,237 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 29 [2020-10-28 08:58:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:45,238 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-28 08:58:45,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:58:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-28 08:58:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 08:58:45,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:45,239 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:45,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:58:45,239 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:45,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1515592794, now seen corresponding path program 5 times [2020-10-28 08:58:45,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:45,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979455528] [2020-10-28 08:58:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:48,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:58:48,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2927 [2020-10-28 08:58:48,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:48,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:58:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 08:58:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:58:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:48,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:48,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:48,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:58:48,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979455528] [2020-10-28 08:58:48,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:48,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:58:48,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636290802] [2020-10-28 08:58:48,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:58:48,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:48,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:58:48,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:58:48,285 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 9 states. [2020-10-28 08:58:48,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:48,387 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-10-28 08:58:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:58:48,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-28 08:58:48,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:48,388 INFO L225 Difference]: With dead ends: 66 [2020-10-28 08:58:48,389 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 08:58:48,389 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 08:58:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 08:58:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-28 08:58:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 08:58:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-10-28 08:58:48,396 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 32 [2020-10-28 08:58:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:48,396 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-10-28 08:58:48,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:58:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-10-28 08:58:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 08:58:48,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:48,398 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:48,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:58:48,398 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:48,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:48,399 INFO L82 PathProgramCache]: Analyzing trace with hash 986089078, now seen corresponding path program 6 times [2020-10-28 08:58:48,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:48,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457895890] [2020-10-28 08:58:48,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:52,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:52,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 08:58:52,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3702 [2020-10-28 08:58:52,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:52,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:58:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:58:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:58:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:52,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:52,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:52,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:52,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:58:52,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:52,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 08:58:52,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457895890] [2020-10-28 08:58:52,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:52,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:58:52,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473044922] [2020-10-28 08:58:52,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:58:52,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:52,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:58:52,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:58:52,271 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 10 states. [2020-10-28 08:58:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:52,404 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2020-10-28 08:58:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:58:52,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-28 08:58:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:52,406 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:58:52,406 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 08:58:52,408 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 08:58:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 08:58:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 08:58:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:58:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-28 08:58:52,418 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 35 [2020-10-28 08:58:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:52,420 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-28 08:58:52,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:58:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-28 08:58:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 08:58:52,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:52,422 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:52,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:58:52,423 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash 112075874, now seen corresponding path program 7 times [2020-10-28 08:58:52,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:52,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230621123] [2020-10-28 08:58:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:52,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:57,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:58:57,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:58:57,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:57,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:58:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 08:58:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:58:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:57,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:57,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:57,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:58:57,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:57,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 08:58:57,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230621123] [2020-10-28 08:58:57,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:57,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:58:57,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522921650] [2020-10-28 08:58:57,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:58:57,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:57,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:58:57,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:58:57,585 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 11 states. [2020-10-28 08:58:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:57,694 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-10-28 08:58:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:58:57,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-28 08:58:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:57,696 INFO L225 Difference]: With dead ends: 76 [2020-10-28 08:58:57,696 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 08:58:57,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:58:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 08:58:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-28 08:58:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 08:58:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-28 08:58:57,708 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 38 [2020-10-28 08:58:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:57,709 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-28 08:58:57,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:58:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-28 08:58:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 08:58:57,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:57,713 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:57,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:58:57,713 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash 88072882, now seen corresponding path program 8 times [2020-10-28 08:58:57,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:57,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209683758] [2020-10-28 08:58:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:02,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 08:59:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:59:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:59:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:59:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:59:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:59:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:02,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:02,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:02,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:02,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:59:02,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:02,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:02,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 08:59:02,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209683758] [2020-10-28 08:59:02,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:02,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:59:02,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987640120] [2020-10-28 08:59:02,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:59:02,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:02,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:59:02,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:59:02,902 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 12 states. [2020-10-28 08:59:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:03,061 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-28 08:59:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:59:03,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-28 08:59:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:03,062 INFO L225 Difference]: With dead ends: 81 [2020-10-28 08:59:03,062 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:59:03,063 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 08:59:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:59:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:59:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:59:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-28 08:59:03,074 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 41 [2020-10-28 08:59:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:03,074 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-28 08:59:03,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:59:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-28 08:59:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 08:59:03,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:03,077 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:03,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:59:03,078 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:03,078 INFO L82 PathProgramCache]: Analyzing trace with hash 547551006, now seen corresponding path program 9 times [2020-10-28 08:59:03,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:03,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613928030] [2020-10-28 08:59:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:03,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:08,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 08:59:08,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:59:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:59:08,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:08,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:59:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 08:59:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:59:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:08,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:08,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:08,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:08,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:08,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-28 08:59:08,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613928030] [2020-10-28 08:59:08,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:08,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:59:08,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088053031] [2020-10-28 08:59:08,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:59:08,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:08,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:59:08,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:59:08,245 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 13 states. [2020-10-28 08:59:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:08,375 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-10-28 08:59:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:59:08,376 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-28 08:59:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:08,377 INFO L225 Difference]: With dead ends: 86 [2020-10-28 08:59:08,377 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 08:59:08,378 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 08:59:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 08:59:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-28 08:59:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 08:59:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-28 08:59:08,384 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 44 [2020-10-28 08:59:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:08,384 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-28 08:59:08,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:59:08,384 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-28 08:59:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 08:59:08,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:08,385 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:08,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:59:08,386 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:08,386 INFO L82 PathProgramCache]: Analyzing trace with hash -918589202, now seen corresponding path program 10 times [2020-10-28 08:59:08,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:08,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537023606] [2020-10-28 08:59:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:13,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:13,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 08:59:13,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:59:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:59:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:13,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:59:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:59:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:59:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:13,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:13,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:13,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:13,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:13,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:13,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:13,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:59:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-28 08:59:13,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537023606] [2020-10-28 08:59:13,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:13,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:59:13,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373088341] [2020-10-28 08:59:13,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:59:13,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:59:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:59:13,622 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 14 states. [2020-10-28 08:59:13,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:13,842 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2020-10-28 08:59:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:59:13,842 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-28 08:59:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:13,843 INFO L225 Difference]: With dead ends: 91 [2020-10-28 08:59:13,843 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 08:59:13,844 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 08:59:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 08:59:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 08:59:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 08:59:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-28 08:59:13,851 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 47 [2020-10-28 08:59:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:13,852 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-28 08:59:13,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:59:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-28 08:59:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 08:59:13,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:13,853 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:13,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:59:13,853 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:13,854 INFO L82 PathProgramCache]: Analyzing trace with hash -768386086, now seen corresponding path program 11 times [2020-10-28 08:59:13,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:13,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945565609] [2020-10-28 08:59:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:13,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:18,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:59:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:19,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:19,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:19,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 08:59:19,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945565609] [2020-10-28 08:59:19,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:19,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:59:19,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46750515] [2020-10-28 08:59:19,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:59:19,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:59:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:59:19,119 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 15 states. [2020-10-28 08:59:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:19,282 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2020-10-28 08:59:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:59:19,282 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-28 08:59:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:19,283 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:59:19,283 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 08:59:19,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:59:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 08:59:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-28 08:59:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 08:59:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-28 08:59:19,297 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 50 [2020-10-28 08:59:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:19,303 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-28 08:59:19,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:59:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-28 08:59:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 08:59:19,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:19,304 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:19,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:59:19,304 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:19,305 INFO L82 PathProgramCache]: Analyzing trace with hash 278409514, now seen corresponding path program 12 times [2020-10-28 08:59:19,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:19,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491330378] [2020-10-28 08:59:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:22,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:24,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:24,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 08:59:24,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:59:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:59:24,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:24,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:59:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:59:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:59:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:24,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:24,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:24,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:24,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:24,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 08:59:24,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491330378] [2020-10-28 08:59:24,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:24,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:59:24,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300748547] [2020-10-28 08:59:24,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:59:24,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:24,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:59:24,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:59:24,566 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 16 states. [2020-10-28 08:59:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:24,791 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-28 08:59:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:59:24,792 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-28 08:59:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:24,793 INFO L225 Difference]: With dead ends: 101 [2020-10-28 08:59:24,793 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:59:24,795 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 08:59:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:59:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 08:59:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 08:59:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-28 08:59:24,801 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 53 [2020-10-28 08:59:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:24,801 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-28 08:59:24,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:59:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-28 08:59:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 08:59:24,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:24,802 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:24,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:59:24,803 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:24,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1450552682, now seen corresponding path program 13 times [2020-10-28 08:59:24,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:24,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475361365] [2020-10-28 08:59:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 08:59:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:59:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:59:29,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:59:29,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:59:29,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:59:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-28 08:59:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:30,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:30,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:30,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:30,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:30,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:30,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-28 08:59:30,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475361365] [2020-10-28 08:59:30,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:30,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:59:30,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344050489] [2020-10-28 08:59:30,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:59:30,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:30,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:59:30,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:59:30,080 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 17 states. [2020-10-28 08:59:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:30,288 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2020-10-28 08:59:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:59:30,288 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-28 08:59:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:30,289 INFO L225 Difference]: With dead ends: 106 [2020-10-28 08:59:30,289 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 08:59:30,290 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 08:59:30,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 08:59:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-28 08:59:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 08:59:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-28 08:59:30,305 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 56 [2020-10-28 08:59:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:30,306 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-28 08:59:30,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:59:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-28 08:59:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 08:59:30,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:30,307 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:30,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:59:30,307 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash 647832422, now seen corresponding path program 14 times [2020-10-28 08:59:30,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:30,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150978314] [2020-10-28 08:59:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:35,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:35,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 08:59:35,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:59:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:59:35,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:35,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:59:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:59:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:59:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:35,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:35,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:35,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:35,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 08:59:35,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150978314] [2020-10-28 08:59:35,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:35,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:59:35,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435391728] [2020-10-28 08:59:35,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:59:35,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:35,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:59:35,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:59:35,623 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 18 states. [2020-10-28 08:59:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:35,870 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-28 08:59:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:59:35,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-28 08:59:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:35,872 INFO L225 Difference]: With dead ends: 111 [2020-10-28 08:59:35,872 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:59:35,873 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 08:59:35,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:59:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 08:59:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 08:59:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-10-28 08:59:35,884 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 59 [2020-10-28 08:59:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:35,884 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-10-28 08:59:35,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:59:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-10-28 08:59:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:59:35,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:35,885 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:35,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:59:35,886 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1683151698, now seen corresponding path program 15 times [2020-10-28 08:59:35,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:35,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754776859] [2020-10-28 08:59:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:40,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:40,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 08:59:40,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:59:40,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:40,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:59:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 08:59:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:59:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:41,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:41,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:41,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:41,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:59:41,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:41,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:41,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:59:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-28 08:59:41,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754776859] [2020-10-28 08:59:41,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:41,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:59:41,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099783085] [2020-10-28 08:59:41,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:59:41,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:41,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:59:41,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:59:41,250 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 19 states. [2020-10-28 08:59:41,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:41,513 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2020-10-28 08:59:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:59:41,513 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-28 08:59:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:41,514 INFO L225 Difference]: With dead ends: 116 [2020-10-28 08:59:41,514 INFO L226 Difference]: Without dead ends: 71 [2020-10-28 08:59:41,515 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 08:59:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-28 08:59:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-28 08:59:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 08:59:41,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-28 08:59:41,530 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 62 [2020-10-28 08:59:41,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:41,531 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-28 08:59:41,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:59:41,531 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-28 08:59:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 08:59:41,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:41,532 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:41,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:59:41,532 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:41,533 INFO L82 PathProgramCache]: Analyzing trace with hash 404834210, now seen corresponding path program 16 times [2020-10-28 08:59:41,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:41,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580357169] [2020-10-28 08:59:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:41,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:46,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:46,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 08:59:46,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 08:59:46,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:46,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:59:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:59:46,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:59:46,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:46,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:46,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:46,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:46,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:46,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:46,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:46,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:46,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:46,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-28 08:59:46,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580357169] [2020-10-28 08:59:46,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:46,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:59:46,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127083065] [2020-10-28 08:59:46,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:59:46,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:46,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:59:46,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:59:46,888 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 20 states. [2020-10-28 08:59:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:47,084 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-28 08:59:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:59:47,084 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-28 08:59:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:47,085 INFO L225 Difference]: With dead ends: 121 [2020-10-28 08:59:47,085 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:59:47,086 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 08:59:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:59:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 08:59:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 08:59:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-28 08:59:47,092 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 65 [2020-10-28 08:59:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:47,092 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-28 08:59:47,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:59:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-28 08:59:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:59:47,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:47,093 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:47,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:59:47,093 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:47,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1874327054, now seen corresponding path program 17 times [2020-10-28 08:59:47,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:47,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521879472] [2020-10-28 08:59:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:47,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:47,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 08:59:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 08:59:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 08:59:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:52,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 08:59:52,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521879472] [2020-10-28 08:59:52,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:52,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:59:52,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422624103] [2020-10-28 08:59:52,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:59:52,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:52,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:59:52,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:59:52,479 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 21 states. [2020-10-28 08:59:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:52,755 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2020-10-28 08:59:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 08:59:52,755 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-10-28 08:59:52,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:52,756 INFO L225 Difference]: With dead ends: 126 [2020-10-28 08:59:52,757 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 08:59:52,757 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 08:59:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 08:59:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-28 08:59:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-28 08:59:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-28 08:59:52,768 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 68 [2020-10-28 08:59:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:52,768 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-28 08:59:52,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:59:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-28 08:59:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 08:59:52,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:52,769 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:52,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:59:52,769 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:52,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:52,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1284006434, now seen corresponding path program 18 times [2020-10-28 08:59:52,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:52,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344736631] [2020-10-28 08:59:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:59:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:59:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:58,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-28 08:59:58,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344736631] [2020-10-28 08:59:58,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:58,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:59:58,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49978139] [2020-10-28 08:59:58,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:59:58,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:58,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:59:58,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:59:58,199 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 22 states. [2020-10-28 08:59:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:58,416 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-28 08:59:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:59:58,416 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-10-28 08:59:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:58,417 INFO L225 Difference]: With dead ends: 131 [2020-10-28 08:59:58,417 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 08:59:58,419 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 08:59:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 08:59:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 08:59:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 08:59:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-10-28 08:59:58,427 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 71 [2020-10-28 08:59:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:58,428 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-10-28 08:59:58,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:59:58,428 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-10-28 08:59:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 08:59:58,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:58,429 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:58,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:59:58,429 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:58,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:58,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1751425738, now seen corresponding path program 19 times [2020-10-28 08:59:58,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:58,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572485132] [2020-10-28 08:59:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:03,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:03,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 09:00:03,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 09:00:03,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:03,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:00:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:00:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 09:00:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:03,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:03,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-28 09:00:03,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572485132] [2020-10-28 09:00:03,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:03,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:00:03,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994179653] [2020-10-28 09:00:03,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:00:03,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:00:03,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:00:03,895 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 23 states. [2020-10-28 09:00:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:04,173 INFO L93 Difference]: Finished difference Result 136 states and 141 transitions. [2020-10-28 09:00:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:00:04,174 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 74 [2020-10-28 09:00:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:04,174 INFO L225 Difference]: With dead ends: 136 [2020-10-28 09:00:04,175 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 09:00:04,175 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 09:00:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 09:00:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-28 09:00:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:00:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-28 09:00:04,187 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 74 [2020-10-28 09:00:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:04,187 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-28 09:00:04,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:00:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-28 09:00:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 09:00:04,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:04,188 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:04,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:00:04,188 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:04,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2005719526, now seen corresponding path program 20 times [2020-10-28 09:00:04,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:04,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633160409] [2020-10-28 09:00:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:04,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:09,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:09,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 09:00:09,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:00:09,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:09,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:00:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:00:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:00:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:09,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:09,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:09,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:09,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:09,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-28 09:00:09,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633160409] [2020-10-28 09:00:09,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:09,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:00:09,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697791013] [2020-10-28 09:00:09,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:00:09,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:09,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:00:09,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:00:09,665 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 24 states. [2020-10-28 09:00:09,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:09,895 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2020-10-28 09:00:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:00:09,899 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 77 [2020-10-28 09:00:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:09,900 INFO L225 Difference]: With dead ends: 141 [2020-10-28 09:00:09,900 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 09:00:09,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:00:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 09:00:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 09:00:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 09:00:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-28 09:00:09,906 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 77 [2020-10-28 09:00:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:09,906 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-28 09:00:09,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:00:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-28 09:00:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 09:00:09,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:09,907 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:09,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:00:09,908 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1702633082, now seen corresponding path program 21 times [2020-10-28 09:00:09,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:09,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621465335] [2020-10-28 09:00:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:00:14,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 09:00:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 09:00:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:15,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:15,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:15,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-28 09:00:15,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621465335] [2020-10-28 09:00:15,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:15,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:00:15,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24666120] [2020-10-28 09:00:15,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:00:15,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:15,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:00:15,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:00:15,414 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 25 states. [2020-10-28 09:00:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:15,655 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2020-10-28 09:00:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:00:15,656 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80 [2020-10-28 09:00:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:15,657 INFO L225 Difference]: With dead ends: 146 [2020-10-28 09:00:15,658 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 09:00:15,659 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 09:00:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 09:00:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-10-28 09:00:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 09:00:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-28 09:00:15,665 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 80 [2020-10-28 09:00:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:15,665 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-28 09:00:15,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:00:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-28 09:00:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 09:00:15,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:15,666 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:15,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:00:15,666 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:15,667 INFO L82 PathProgramCache]: Analyzing trace with hash -395911082, now seen corresponding path program 22 times [2020-10-28 09:00:15,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:15,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345792917] [2020-10-28 09:00:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:20,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 09:00:20,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 09:00:20,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:20,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:00:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 09:00:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:00:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:21,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:21,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:21,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:21,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:21,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:21,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 09:00:21,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345792917] [2020-10-28 09:00:21,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:21,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:00:21,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432166327] [2020-10-28 09:00:21,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:00:21,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:21,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:00:21,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:00:21,226 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 26 states. [2020-10-28 09:00:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:21,537 INFO L93 Difference]: Finished difference Result 151 states and 156 transitions. [2020-10-28 09:00:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:00:21,538 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 83 [2020-10-28 09:00:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:21,539 INFO L225 Difference]: With dead ends: 151 [2020-10-28 09:00:21,539 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 09:00:21,540 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 09:00:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 09:00:21,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 09:00:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 09:00:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-28 09:00:21,546 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 83 [2020-10-28 09:00:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:21,547 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-28 09:00:21,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:00:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-28 09:00:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 09:00:21,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:21,548 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:21,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:00:21,548 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:21,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2118077886, now seen corresponding path program 23 times [2020-10-28 09:00:21,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:21,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207429165] [2020-10-28 09:00:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:26,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:26,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 09:00:26,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:00:26,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:26,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:00:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:00:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 09:00:26,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-28 09:00:27,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207429165] [2020-10-28 09:00:27,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:27,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:00:27,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584631059] [2020-10-28 09:00:27,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:00:27,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:27,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:00:27,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:00:27,099 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 27 states. [2020-10-28 09:00:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:27,455 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2020-10-28 09:00:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:00:27,455 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 86 [2020-10-28 09:00:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:27,456 INFO L225 Difference]: With dead ends: 156 [2020-10-28 09:00:27,456 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:00:27,457 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 09:00:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:00:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-28 09:00:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 09:00:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2020-10-28 09:00:27,466 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 86 [2020-10-28 09:00:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:27,467 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2020-10-28 09:00:27,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:00:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2020-10-28 09:00:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 09:00:27,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:27,468 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:27,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:00:27,468 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:27,469 INFO L82 PathProgramCache]: Analyzing trace with hash -433730414, now seen corresponding path program 24 times [2020-10-28 09:00:27,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:27,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79357909] [2020-10-28 09:00:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:32,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:32,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 09:00:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:33,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:33,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:33,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:33,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:33,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-10-28 09:00:33,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79357909] [2020-10-28 09:00:33,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:33,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:00:33,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847276823] [2020-10-28 09:00:33,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:00:33,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:33,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:00:33,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:00:33,102 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 28 states. [2020-10-28 09:00:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:33,445 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-28 09:00:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:00:33,446 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 89 [2020-10-28 09:00:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:33,447 INFO L225 Difference]: With dead ends: 161 [2020-10-28 09:00:33,447 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 09:00:33,448 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 09:00:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 09:00:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 09:00:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 09:00:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2020-10-28 09:00:33,455 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 89 [2020-10-28 09:00:33,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:33,455 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2020-10-28 09:00:33,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:00:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2020-10-28 09:00:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 09:00:33,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:33,456 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:33,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:00:33,457 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1229329662, now seen corresponding path program 25 times [2020-10-28 09:00:33,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:33,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760571982] [2020-10-28 09:00:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:00:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 09:00:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:39,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:39,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:39,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:39,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:39,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:39,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-28 09:00:39,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760571982] [2020-10-28 09:00:39,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:39,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:00:39,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710584219] [2020-10-28 09:00:39,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:00:39,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:39,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:00:39,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:00:39,270 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 29 states. [2020-10-28 09:00:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:39,618 INFO L93 Difference]: Finished difference Result 166 states and 171 transitions. [2020-10-28 09:00:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:00:39,619 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 92 [2020-10-28 09:00:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:39,620 INFO L225 Difference]: With dead ends: 166 [2020-10-28 09:00:39,620 INFO L226 Difference]: Without dead ends: 101 [2020-10-28 09:00:39,621 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 09:00:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-28 09:00:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-28 09:00:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 09:00:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-10-28 09:00:39,627 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 92 [2020-10-28 09:00:39,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:39,627 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-10-28 09:00:39,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:00:39,628 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-10-28 09:00:39,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 09:00:39,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:39,629 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:39,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:00:39,629 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:39,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:39,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1443031758, now seen corresponding path program 26 times [2020-10-28 09:00:39,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:39,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521552905] [2020-10-28 09:00:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 09:00:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 09:00:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:44,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:00:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:00:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 09:00:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:45,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:45,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:45,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:00:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:45,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-28 09:00:45,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521552905] [2020-10-28 09:00:45,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:45,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:00:45,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837485781] [2020-10-28 09:00:45,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:00:45,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:45,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:00:45,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:00:45,328 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 30 states. [2020-10-28 09:00:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:45,672 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2020-10-28 09:00:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:00:45,673 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 95 [2020-10-28 09:00:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:45,673 INFO L225 Difference]: With dead ends: 171 [2020-10-28 09:00:45,673 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 09:00:45,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:00:45,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 09:00:45,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 09:00:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:00:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-28 09:00:45,680 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 95 [2020-10-28 09:00:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:45,680 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-28 09:00:45,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:00:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-28 09:00:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 09:00:45,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:45,683 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:45,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:00:45,684 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:45,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1270811066, now seen corresponding path program 27 times [2020-10-28 09:00:45,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:45,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876674454] [2020-10-28 09:00:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:50,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:50,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:00:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:51,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-10-28 09:00:51,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876674454] [2020-10-28 09:00:51,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:51,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:00:51,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860341086] [2020-10-28 09:00:51,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:00:51,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:51,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:00:51,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:00:51,454 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 31 states. [2020-10-28 09:00:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:51,867 INFO L93 Difference]: Finished difference Result 176 states and 181 transitions. [2020-10-28 09:00:51,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:00:51,868 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 98 [2020-10-28 09:00:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:51,869 INFO L225 Difference]: With dead ends: 176 [2020-10-28 09:00:51,869 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 09:00:51,871 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 09:00:51,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 09:00:51,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-28 09:00:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 09:00:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2020-10-28 09:00:51,877 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 98 [2020-10-28 09:00:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:51,878 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2020-10-28 09:00:51,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:00:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2020-10-28 09:00:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 09:00:51,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:51,879 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:51,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:00:51,879 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:51,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:51,880 INFO L82 PathProgramCache]: Analyzing trace with hash -841925878, now seen corresponding path program 28 times [2020-10-28 09:00:51,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:51,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626084145] [2020-10-28 09:00:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:56,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:56,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:00:56,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 09:00:56,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:56,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:00:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:00:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 09:00:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:57,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:57,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:57,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:57,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:57,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:57,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-28 09:00:57,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626084145] [2020-10-28 09:00:57,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:57,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:00:57,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270665193] [2020-10-28 09:00:57,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:00:57,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:57,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:00:57,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:00:57,689 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 32 states. [2020-10-28 09:00:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:58,115 INFO L93 Difference]: Finished difference Result 181 states and 186 transitions. [2020-10-28 09:00:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:00:58,115 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 101 [2020-10-28 09:00:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:58,117 INFO L225 Difference]: With dead ends: 181 [2020-10-28 09:00:58,117 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 09:00:58,119 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 09:00:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 09:00:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-28 09:00:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 09:00:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2020-10-28 09:00:58,126 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 101 [2020-10-28 09:00:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:58,127 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2020-10-28 09:00:58,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:00:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2020-10-28 09:00:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 09:00:58,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:58,128 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:58,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:00:58,128 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:58,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1823043466, now seen corresponding path program 29 times [2020-10-28 09:00:58,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:58,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546595822] [2020-10-28 09:00:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 09:01:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:03,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2020-10-28 09:01:03,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546595822] [2020-10-28 09:01:03,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:03,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:01:03,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320130994] [2020-10-28 09:01:03,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:01:03,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:03,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:01:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:01:03,985 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 33 states. [2020-10-28 09:01:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:04,311 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2020-10-28 09:01:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:01:04,312 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 104 [2020-10-28 09:01:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:04,313 INFO L225 Difference]: With dead ends: 186 [2020-10-28 09:01:04,313 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 09:01:04,314 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 09:01:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 09:01:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-10-28 09:01:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 09:01:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2020-10-28 09:01:04,321 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 104 [2020-10-28 09:01:04,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:04,321 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2020-10-28 09:01:04,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:01:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2020-10-28 09:01:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 09:01:04,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:04,322 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:04,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:01:04,323 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:04,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1528578746, now seen corresponding path program 30 times [2020-10-28 09:01:04,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:04,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230499533] [2020-10-28 09:01:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 09:01:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 09:01:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:09,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:01:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:01:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 09:01:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:10,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:10,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:10,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:10,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:10,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2020-10-28 09:01:10,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230499533] [2020-10-28 09:01:10,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:10,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:01:10,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388153229] [2020-10-28 09:01:10,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:01:10,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:10,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:01:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:01:10,236 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 34 states. [2020-10-28 09:01:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:10,584 INFO L93 Difference]: Finished difference Result 191 states and 196 transitions. [2020-10-28 09:01:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:01:10,585 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 107 [2020-10-28 09:01:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:10,586 INFO L225 Difference]: With dead ends: 191 [2020-10-28 09:01:10,586 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 09:01:10,587 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 09:01:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 09:01:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-28 09:01:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 09:01:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2020-10-28 09:01:10,602 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 107 [2020-10-28 09:01:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:10,602 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2020-10-28 09:01:10,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:01:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2020-10-28 09:01:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 09:01:10,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:10,608 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:10,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:01:10,608 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:10,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1505208626, now seen corresponding path program 31 times [2020-10-28 09:01:10,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:10,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112205043] [2020-10-28 09:01:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:10,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 09:01:15,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:16,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:16,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:16,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:16,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:16,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-28 09:01:16,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112205043] [2020-10-28 09:01:16,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:16,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:01:16,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70719470] [2020-10-28 09:01:16,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:01:16,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:16,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:01:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:01:16,536 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 35 states. [2020-10-28 09:01:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:16,967 INFO L93 Difference]: Finished difference Result 196 states and 201 transitions. [2020-10-28 09:01:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:01:16,967 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 110 [2020-10-28 09:01:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:16,969 INFO L225 Difference]: With dead ends: 196 [2020-10-28 09:01:16,969 INFO L226 Difference]: Without dead ends: 119 [2020-10-28 09:01:16,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:01:16,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-28 09:01:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-10-28 09:01:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 09:01:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-28 09:01:16,976 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 110 [2020-10-28 09:01:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:16,976 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-28 09:01:16,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:01:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-28 09:01:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 09:01:16,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:16,978 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:16,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:01:16,978 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:16,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:16,979 INFO L82 PathProgramCache]: Analyzing trace with hash -200445566, now seen corresponding path program 32 times [2020-10-28 09:01:16,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:16,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383742857] [2020-10-28 09:01:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:17,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:22,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 09:01:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:22,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:22,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2020-10-28 09:01:22,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383742857] [2020-10-28 09:01:22,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:22,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:01:22,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351031272] [2020-10-28 09:01:22,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:01:22,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:22,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:01:22,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:01:22,997 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 36 states. [2020-10-28 09:01:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:23,475 INFO L93 Difference]: Finished difference Result 201 states and 206 transitions. [2020-10-28 09:01:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:01:23,475 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 113 [2020-10-28 09:01:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:23,477 INFO L225 Difference]: With dead ends: 201 [2020-10-28 09:01:23,477 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 09:01:23,478 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 09:01:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 09:01:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-28 09:01:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 09:01:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2020-10-28 09:01:23,485 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 113 [2020-10-28 09:01:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:23,485 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2020-10-28 09:01:23,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:01:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2020-10-28 09:01:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 09:01:23,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:23,486 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:23,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:01:23,486 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:23,487 INFO L82 PathProgramCache]: Analyzing trace with hash -2012392466, now seen corresponding path program 33 times [2020-10-28 09:01:23,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:23,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839463298] [2020-10-28 09:01:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:23,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 09:01:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:29,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:29,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:29,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:29,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:29,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2020-10-28 09:01:29,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839463298] [2020-10-28 09:01:29,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:29,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 09:01:29,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071123481] [2020-10-28 09:01:29,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 09:01:29,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:29,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 09:01:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:01:29,578 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 37 states. [2020-10-28 09:01:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:30,053 INFO L93 Difference]: Finished difference Result 206 states and 211 transitions. [2020-10-28 09:01:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:01:30,054 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 116 [2020-10-28 09:01:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:30,055 INFO L225 Difference]: With dead ends: 206 [2020-10-28 09:01:30,055 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 09:01:30,057 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 09:01:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 09:01:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-10-28 09:01:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-28 09:01:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2020-10-28 09:01:30,064 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 116 [2020-10-28 09:01:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:30,064 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2020-10-28 09:01:30,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 09:01:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2020-10-28 09:01:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 09:01:30,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:30,065 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:30,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:01:30,065 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:30,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1784588354, now seen corresponding path program 34 times [2020-10-28 09:01:30,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:30,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096118230] [2020-10-28 09:01:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 09:01:35,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:35,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5293 [2020-10-28 09:01:35,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 09:01:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 09:01:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 09:01:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:36,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:36,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:36,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:36,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:36,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2020-10-28 09:01:36,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096118230] [2020-10-28 09:01:36,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:36,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-28 09:01:36,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297495784] [2020-10-28 09:01:36,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-28 09:01:36,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:36,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-28 09:01:36,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:01:36,420 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 38 states. [2020-10-28 09:01:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:36,852 INFO L93 Difference]: Finished difference Result 211 states and 216 transitions. [2020-10-28 09:01:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:01:36,853 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 119 [2020-10-28 09:01:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:36,854 INFO L225 Difference]: With dead ends: 211 [2020-10-28 09:01:36,854 INFO L226 Difference]: Without dead ends: 128 [2020-10-28 09:01:36,855 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 09:01:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-28 09:01:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-28 09:01:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 09:01:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2020-10-28 09:01:36,861 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 119 [2020-10-28 09:01:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:36,862 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2020-10-28 09:01:36,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-28 09:01:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2020-10-28 09:01:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 09:01:36,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:36,863 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:36,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:01:36,863 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash 922914986, now seen corresponding path program 35 times [2020-10-28 09:01:36,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:36,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562837057] [2020-10-28 09:01:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:36,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 09:01:41,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:41,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 09:01:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 09:01:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 09:01:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 09:01:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-10-28 09:01:43,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562837057] [2020-10-28 09:01:43,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:43,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-28 09:01:43,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241534358] [2020-10-28 09:01:43,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-28 09:01:43,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:43,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-28 09:01:43,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:01:43,012 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 39 states. [2020-10-28 09:01:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:43,479 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2020-10-28 09:01:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 09:01:43,479 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 122 [2020-10-28 09:01:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:43,481 INFO L225 Difference]: With dead ends: 216 [2020-10-28 09:01:43,481 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 09:01:43,482 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 09:01:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 09:01:43,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-10-28 09:01:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:01:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-28 09:01:43,488 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 122 [2020-10-28 09:01:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:43,488 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-28 09:01:43,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-28 09:01:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-28 09:01:43,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 09:01:43,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:43,489 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:43,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:01:43,489 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash 628256762, now seen corresponding path program 36 times [2020-10-28 09:01:43,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:43,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41944651] [2020-10-28 09:01:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:01:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:49,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2020-10-28 09:01:49,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41944651] [2020-10-28 09:01:49,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:49,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-28 09:01:49,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661764148] [2020-10-28 09:01:49,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-28 09:01:49,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:49,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-28 09:01:49,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:01:49,709 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 40 states. [2020-10-28 09:01:50,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:50,219 INFO L93 Difference]: Finished difference Result 221 states and 226 transitions. [2020-10-28 09:01:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 09:01:50,220 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 125 [2020-10-28 09:01:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:50,221 INFO L225 Difference]: With dead ends: 221 [2020-10-28 09:01:50,221 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 09:01:50,222 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 09:01:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 09:01:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-28 09:01:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 09:01:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-10-28 09:01:50,227 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 125 [2020-10-28 09:01:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:50,227 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-10-28 09:01:50,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-28 09:01:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-10-28 09:01:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 09:01:50,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:50,228 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:50,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:01:50,228 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:50,229 INFO L82 PathProgramCache]: Analyzing trace with hash 784490342, now seen corresponding path program 37 times [2020-10-28 09:01:50,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:50,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147296610] [2020-10-28 09:01:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:55,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 09:01:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:56,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:56,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:56,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:56,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:56,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 09:01:56,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147296610] [2020-10-28 09:01:56,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:56,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-28 09:01:56,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756176391] [2020-10-28 09:01:56,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-28 09:01:56,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:56,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-28 09:01:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 09:01:56,474 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 41 states. [2020-10-28 09:01:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:56,875 INFO L93 Difference]: Finished difference Result 226 states and 231 transitions. [2020-10-28 09:01:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-28 09:01:56,875 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 128 [2020-10-28 09:01:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:56,877 INFO L225 Difference]: With dead ends: 226 [2020-10-28 09:01:56,877 INFO L226 Difference]: Without dead ends: 137 [2020-10-28 09:01:56,878 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 09:01:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-28 09:01:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-10-28 09:01:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 09:01:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2020-10-28 09:01:56,883 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 128 [2020-10-28 09:01:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:56,883 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2020-10-28 09:01:56,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-28 09:01:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2020-10-28 09:01:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 09:01:56,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:56,884 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:56,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:01:56,884 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:56,885 INFO L82 PathProgramCache]: Analyzing trace with hash 13875766, now seen corresponding path program 38 times [2020-10-28 09:01:56,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:56,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433392631] [2020-10-28 09:01:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:01,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 09:02:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 09:02:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:03,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:03,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:03,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:03,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:03,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:03,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2020-10-28 09:02:03,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433392631] [2020-10-28 09:02:03,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:03,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-28 09:02:03,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018565731] [2020-10-28 09:02:03,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-28 09:02:03,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:03,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-28 09:02:03,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:02:03,243 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 42 states. [2020-10-28 09:02:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:03,603 INFO L93 Difference]: Finished difference Result 231 states and 236 transitions. [2020-10-28 09:02:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 09:02:03,603 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 131 [2020-10-28 09:02:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:03,604 INFO L225 Difference]: With dead ends: 231 [2020-10-28 09:02:03,604 INFO L226 Difference]: Without dead ends: 140 [2020-10-28 09:02:03,606 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 09:02:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-28 09:02:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-28 09:02:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 09:02:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2020-10-28 09:02:03,613 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 131 [2020-10-28 09:02:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:03,613 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2020-10-28 09:02:03,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-28 09:02:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2020-10-28 09:02:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 09:02:03,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:03,614 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:03,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:02:03,615 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:03,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1727512610, now seen corresponding path program 39 times [2020-10-28 09:02:03,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:03,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963376030] [2020-10-28 09:02:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:08,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 09:02:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:10,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:02:10,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:10,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-28 09:02:10,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963376030] [2020-10-28 09:02:10,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:10,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-28 09:02:10,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403292770] [2020-10-28 09:02:10,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-28 09:02:10,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:10,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-28 09:02:10,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 09:02:10,026 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 43 states. [2020-10-28 09:02:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:10,364 INFO L93 Difference]: Finished difference Result 236 states and 241 transitions. [2020-10-28 09:02:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-28 09:02:10,365 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 134 [2020-10-28 09:02:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:10,366 INFO L225 Difference]: With dead ends: 236 [2020-10-28 09:02:10,367 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 09:02:10,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 09:02:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 09:02:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-10-28 09:02:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 09:02:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2020-10-28 09:02:10,376 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 134 [2020-10-28 09:02:10,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:10,379 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2020-10-28 09:02:10,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-28 09:02:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2020-10-28 09:02:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 09:02:10,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:10,381 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:10,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:02:10,381 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:10,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1184380530, now seen corresponding path program 40 times [2020-10-28 09:02:10,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:10,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045518536] [2020-10-28 09:02:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 09:02:15,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-28 09:02:15,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-28 09:02:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 09:02:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 09:02:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:16,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2020-10-28 09:02:16,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045518536] [2020-10-28 09:02:16,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:16,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-28 09:02:16,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926027690] [2020-10-28 09:02:16,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-28 09:02:16,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:16,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-28 09:02:16,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 09:02:16,861 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 44 states. [2020-10-28 09:02:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:17,257 INFO L93 Difference]: Finished difference Result 241 states and 246 transitions. [2020-10-28 09:02:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-28 09:02:17,257 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 137 [2020-10-28 09:02:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:17,259 INFO L225 Difference]: With dead ends: 241 [2020-10-28 09:02:17,259 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 09:02:17,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 09:02:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 09:02:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-28 09:02:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 09:02:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2020-10-28 09:02:17,268 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 137 [2020-10-28 09:02:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:17,268 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2020-10-28 09:02:17,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-28 09:02:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2020-10-28 09:02:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 09:02:17,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:17,269 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:17,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 09:02:17,269 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2033339682, now seen corresponding path program 41 times [2020-10-28 09:02:17,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:17,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795816497] [2020-10-28 09:02:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 09:02:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:23,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:23,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:23,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:23,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:23,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:23,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-10-28 09:02:23,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795816497] [2020-10-28 09:02:23,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:23,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-28 09:02:23,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201453846] [2020-10-28 09:02:23,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-28 09:02:23,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-28 09:02:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 09:02:23,752 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 45 states. [2020-10-28 09:02:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:24,334 INFO L93 Difference]: Finished difference Result 246 states and 251 transitions. [2020-10-28 09:02:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-28 09:02:24,334 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 140 [2020-10-28 09:02:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:24,336 INFO L225 Difference]: With dead ends: 246 [2020-10-28 09:02:24,336 INFO L226 Difference]: Without dead ends: 149 [2020-10-28 09:02:24,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 09:02:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-28 09:02:24,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2020-10-28 09:02:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-28 09:02:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-10-28 09:02:24,347 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 140 [2020-10-28 09:02:24,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:24,349 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-10-28 09:02:24,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-28 09:02:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-10-28 09:02:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 09:02:24,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:24,351 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:24,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 09:02:24,352 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash -686627666, now seen corresponding path program 42 times [2020-10-28 09:02:24,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:24,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479171861] [2020-10-28 09:02:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:29,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:29,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0