/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-crafted/mapsum2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:19:17,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:19:17,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:19:17,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:19:17,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:19:17,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:19:17,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:19:17,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:19:17,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:19:17,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:19:17,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:19:17,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:19:17,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:19:17,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:19:17,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:19:17,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:19:17,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:19:17,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:19:17,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:19:17,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:19:17,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:19:17,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:19:17,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:19:17,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:19:17,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:19:17,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:19:17,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:19:17,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:19:17,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:19:17,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:19:17,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:19:17,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:19:17,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:19:17,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:19:17,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:19:17,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:19:17,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:19:17,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:19:17,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:19:17,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:19:17,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:19:17,237 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 [2020-10-29 03:19:17,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:19:17,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:19:17,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:19:17,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:19:17,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:19:17,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:19:17,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:19:17,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:19:17,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:19:17,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:19:17,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:19:17,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:19:17,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:19:17,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:19:17,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:19:17,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:19:17,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:19:17,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:19:17,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:19:17,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:19:17,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:19:17,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:19:17,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:19:17,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:19:17,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:19:17,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:19:17,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:19:17,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:19:17,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:19:17,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:19:17,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:19:17,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:19:17,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:19:17,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:19:17,711 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:19:17,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum2.i [2020-10-29 03:19:17,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bd7d533b/0daa282fda4b4d7696fb5789c91897c8/FLAG0dd9fa8de [2020-10-29 03:19:18,538 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:19:18,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum2.i [2020-10-29 03:19:18,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bd7d533b/0daa282fda4b4d7696fb5789c91897c8/FLAG0dd9fa8de [2020-10-29 03:19:18,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bd7d533b/0daa282fda4b4d7696fb5789c91897c8 [2020-10-29 03:19:18,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:19:18,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:19:18,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:18,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:19:18,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:19:18,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:18" (1/1) ... [2020-10-29 03:19:18,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcddab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:18, skipping insertion in model container [2020-10-29 03:19:18,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:18" (1/1) ... [2020-10-29 03:19:18,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:19:18,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:19:19,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:19,124 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:19:19,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:19,172 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:19:19,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19 WrapperNode [2020-10-29 03:19:19,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:19,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:19:19,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:19:19,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:19:19,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (1/1) ... [2020-10-29 03:19:19,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (1/1) ... [2020-10-29 03:19:19,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (1/1) ... [2020-10-29 03:19:19,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (1/1) ... [2020-10-29 03:19:19,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (1/1) ... [2020-10-29 03:19:19,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (1/1) ... [2020-10-29 03:19:19,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (1/1) ... [2020-10-29 03:19:19,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:19:19,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:19:19,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:19:19,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:19:19,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (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 [2020-10-29 03:19:19,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:19:19,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:19:19,315 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:19:19,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-29 03:19:19,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:19:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:19:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:19:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:19:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:19:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:19:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:19:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:19:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-29 03:19:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:19:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:19:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:19:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:19:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:19:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:19:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:19:19,939 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:19:19,940 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:19:19,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:19 BoogieIcfgContainer [2020-10-29 03:19:19,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:19:19,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:19:19,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:19:19,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:19:19,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:19:18" (1/3) ... [2020-10-29 03:19:19,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cabfd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:19, skipping insertion in model container [2020-10-29 03:19:19,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:19" (2/3) ... [2020-10-29 03:19:19,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cabfd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:19, skipping insertion in model container [2020-10-29 03:19:19,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:19" (3/3) ... [2020-10-29 03:19:19,958 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum2.i [2020-10-29 03:19:19,974 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:19:19,980 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:19:19,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:19:20,040 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:19:20,040 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:19:20,041 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:19:20,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:19:20,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:19:20,041 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:19:20,041 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:19:20,041 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:19:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 03:19:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:19:20,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:20,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:20,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:20,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:20,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-29 03:19:20,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:20,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662238874] [2020-10-29 03:19:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:20,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:19:21,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:19:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-29 03:19:21,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:19:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:19:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:19:22,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:22,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:22,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:22,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:22,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:22,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:22,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 03:19:22,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:22,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:19:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:22,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 03:19:22,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:22,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:22,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:19:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:22,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:22,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:22,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 03:19:22,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:22,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:22,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662238874] [2020-10-29 03:19:22,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:19:22,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 03:19:22,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682656284] [2020-10-29 03:19:22,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:19:22,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:22,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:19:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:22,680 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 03:19:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:23,317 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 03:19:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:19:23,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 03:19:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:23,330 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:19:23,331 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:19:23,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:19:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:19:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 03:19:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 03:19:23,397 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 03:19:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:23,398 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 03:19:23,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:19:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 03:19:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:19:23,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:23,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:23,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:19:23,402 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1502494865, now seen corresponding path program 1 times [2020-10-29 03:19:23,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:23,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671904724] [2020-10-29 03:19:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:19:24,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-29 03:19:24,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:24,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:24,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:24,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:24,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:24,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:24,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:24,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:19:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:19:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:24,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:19:24,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:24,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:19:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:24,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:19:24,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:24,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:24,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671904724] [2020-10-29 03:19:24,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:24,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:19:24,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411235649] [2020-10-29 03:19:24,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:19:24,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:24,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:19:24,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:19:24,989 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 03:19:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:25,130 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 03:19:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:19:25,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 03:19:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:25,132 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:19:25,132 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:19:25,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:19:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:19:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:19:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 03:19:25,141 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 03:19:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:25,141 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 03:19:25,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:19:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 03:19:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:19:25,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:25,144 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:25,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:19:25,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:25,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-29 03:19:25,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:25,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263389035] [2020-10-29 03:19:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:30,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:19:30,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:19:30,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:30,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:19:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:30,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:30,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:30,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:30,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:30,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:30,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:30,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 03:19:30,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:30,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:30,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:19:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:30,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:30,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:19:30,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:30,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:30,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:30,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:19:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:30,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:30,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:30,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 03:19:30,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:30,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 03:19:30,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263389035] [2020-10-29 03:19:30,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:30,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:19:30,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029135466] [2020-10-29 03:19:30,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:19:30,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:30,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:19:30,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:19:30,397 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 03:19:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:30,587 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 03:19:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:19:30,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 03:19:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:30,588 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:19:30,589 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:19:30,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:19:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 03:19:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:19:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 03:19:30,599 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 03:19:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:30,599 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 03:19:30,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:19:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 03:19:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:19:30,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:30,601 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:30,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:19:30,602 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:30,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-29 03:19:30,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:30,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092459944] [2020-10-29 03:19:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:30,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:35,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:35,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:19:35,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:35,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:19:35,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:35,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:35,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:35,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:35,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:35,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:35,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:35,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:35,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:35,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:35,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:35,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:35,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:35,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 03:19:35,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:35,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:35,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:19:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:35,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:35,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:35,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 03:19:35,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:35,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:35,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:19:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:35,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:35,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:35,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 03:19:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:35,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 03:19:35,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092459944] [2020-10-29 03:19:35,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:35,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:19:35,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662281726] [2020-10-29 03:19:35,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:19:35,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:19:35,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:35,854 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 03:19:36,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:36,080 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 03:19:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:19:36,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 03:19:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:36,082 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:19:36,082 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:19:36,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:19:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 03:19:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:19:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 03:19:36,097 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 03:19:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:36,097 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 03:19:36,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:19:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 03:19:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:19:36,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:36,102 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:36,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:19:36,103 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-29 03:19:36,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:36,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366473324] [2020-10-29 03:19:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:36,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:36,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:36,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:41,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:19:41,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:19:41,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:41,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:41,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:41,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:41,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:41,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:41,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:41,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:41,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 03:19:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:41,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:19:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:41,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 03:19:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:41,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:19:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:41,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:41,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 03:19:41,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:41,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:19:41,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366473324] [2020-10-29 03:19:41,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:41,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:19:41,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794763867] [2020-10-29 03:19:41,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:19:41,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:19:41,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:19:41,411 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 03:19:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:41,659 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 03:19:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:19:41,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 03:19:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:41,661 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:19:41,661 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:19:41,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:19:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:19:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 03:19:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:19:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 03:19:41,671 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 03:19:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:41,671 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 03:19:41,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:19:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 03:19:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:19:41,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:41,673 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:41,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:19:41,674 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-29 03:19:41,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:41,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612076986] [2020-10-29 03:19:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:19:46,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:19:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:46,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:46,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:46,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:46,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:46,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:46,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:46,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:46,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:46,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 03:19:46,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:46,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:46,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:19:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:46,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:46,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 03:19:46,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:46,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:19:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:46,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:46,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 03:19:46,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:46,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:19:46,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612076986] [2020-10-29 03:19:46,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:46,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:19:46,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086540980] [2020-10-29 03:19:46,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:19:46,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:46,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:19:46,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:46,983 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 03:19:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:47,258 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 03:19:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:19:47,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 03:19:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:47,260 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:19:47,260 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:19:47,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:19:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:19:47,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 03:19:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:19:47,269 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 03:19:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:47,269 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:19:47,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:19:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:19:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:19:47,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:47,271 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:47,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:19:47,271 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-29 03:19:47,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:47,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508210244] [2020-10-29 03:19:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:47,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:52,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:19:52,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:19:52,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:52,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:52,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:52,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:52,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:52,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:52,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:52,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 03:19:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:52,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:19:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:52,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:52,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:52,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:52,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 03:19:52,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:52,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:19:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 03:19:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:52,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 03:19:52,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508210244] [2020-10-29 03:19:52,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:52,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:19:52,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382757157] [2020-10-29 03:19:52,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:19:52,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:52,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:19:52,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:19:52,686 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 03:19:52,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:52,997 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:19:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:19:52,997 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 03:19:52,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:52,998 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:19:52,998 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:19:52,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:19:53,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:19:53,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 03:19:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:19:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 03:19:53,016 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 03:19:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:53,016 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 03:19:53,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:19:53,016 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 03:19:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:19:53,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:53,020 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:53,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:19:53,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-29 03:19:53,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:53,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719785364] [2020-10-29 03:19:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:58,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:19:58,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:19:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:58,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 03:19:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:58,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:58,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:58,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:58,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 03:19:58,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:58,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:19:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:19:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:58,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:58,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 03:19:58,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:58,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 03:19:58,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719785364] [2020-10-29 03:19:58,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:58,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:19:58,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918305915] [2020-10-29 03:19:58,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:19:58,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:58,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:19:58,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:58,458 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 03:19:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:58,835 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 03:19:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:19:58,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 03:19:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:58,837 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:19:58,837 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:19:58,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:19:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:19:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:19:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:19:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 03:19:58,850 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 03:19:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:58,850 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 03:19:58,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:19:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 03:19:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:19:58,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:58,852 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:58,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:19:58,852 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:58,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-29 03:19:58,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:58,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934688857] [2020-10-29 03:19:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:03,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:20:03,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:20:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:20:03,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:03,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:20:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:03,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:03,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:03,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:03,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:03,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:04,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:04,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:04,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:04,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 03:20:04,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:04,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:04,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:20:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:04,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:04,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:04,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 03:20:04,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:04,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:20:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:04,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:04,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:04,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 03:20:04,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:04,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:20:04,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934688857] [2020-10-29 03:20:04,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:04,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:20:04,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192538283] [2020-10-29 03:20:04,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:20:04,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:04,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:20:04,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:20:04,360 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 03:20:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:04,836 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 03:20:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:20:04,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 03:20:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:04,838 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:20:04,838 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:20:04,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:20:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:20:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:20:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:20:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 03:20:04,847 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 03:20:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:04,847 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 03:20:04,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:20:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 03:20:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:20:04,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:04,849 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:04,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:20:04,849 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:04,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:04,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-29 03:20:04,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:04,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462934259] [2020-10-29 03:20:04,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:09,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:09,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:20:09,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:20:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:09,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:09,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:09,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:09,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:09,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:09,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:09,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:09,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:09,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 03:20:09,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:09,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:20:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:20:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:10,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:10,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 03:20:10,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:10,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 03:20:10,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462934259] [2020-10-29 03:20:10,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:10,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:20:10,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855488036] [2020-10-29 03:20:10,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:20:10,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:10,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:20:10,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:20:10,311 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 03:20:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:10,802 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 03:20:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:20:10,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 03:20:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:10,803 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:20:10,803 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:20:10,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:20:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:20:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:20:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:20:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 03:20:10,819 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 03:20:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:10,819 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 03:20:10,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:20:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 03:20:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:20:10,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:10,822 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:10,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:20:10,823 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:10,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-29 03:20:10,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:10,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095695016] [2020-10-29 03:20:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:15,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:20:15,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:20:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:15,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:20:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:15,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:15,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:15,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:15,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:15,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:15,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:15,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:15,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 03:20:15,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:15,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:16,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:20:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:16,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:16,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 03:20:16,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:16,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:16,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:20:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:16,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 03:20:16,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095695016] [2020-10-29 03:20:16,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:16,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:20:16,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647358615] [2020-10-29 03:20:16,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:20:16,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:16,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:20:16,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:20:16,312 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-29 03:20:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:16,840 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 03:20:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:20:16,841 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-29 03:20:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:16,842 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:20:16,842 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:20:16,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:20:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:20:16,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:20:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:20:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 03:20:16,856 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-29 03:20:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:16,856 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 03:20:16,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:20:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 03:20:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:20:16,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:16,857 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:16,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:20:16,858 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2139948197, now seen corresponding path program 11 times [2020-10-29 03:20:16,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:16,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641295852] [2020-10-29 03:20:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:16,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:21,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:20:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:20:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:21,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:20:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:21,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:21,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:20:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:22,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:20:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:22,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:22,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 03:20:22,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:22,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:20:22,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641295852] [2020-10-29 03:20:22,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:22,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:20:22,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814740568] [2020-10-29 03:20:22,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:20:22,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:22,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:20:22,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:20:22,561 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 15 states. [2020-10-29 03:20:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:23,269 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 03:20:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:20:23,270 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-29 03:20:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:23,271 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:20:23,271 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:20:23,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:20:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:20:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:20:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:20:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 03:20:23,284 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 100 [2020-10-29 03:20:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:23,285 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 03:20:23,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:20:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 03:20:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:20:23,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:23,290 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:23,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:20:23,290 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:23,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:23,291 INFO L82 PathProgramCache]: Analyzing trace with hash 384990905, now seen corresponding path program 12 times [2020-10-29 03:20:23,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:23,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212273613] [2020-10-29 03:20:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:28,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:28,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:28,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:28,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:28,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:20:28,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:28,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:28,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:28,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:28,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 03:20:28,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:28,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:28,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:20:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:28,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 03:20:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:28,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:29,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:20:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:29,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:29,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:29,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 03:20:29,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:29,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 03:20:29,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212273613] [2020-10-29 03:20:29,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:29,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:20:29,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58881732] [2020-10-29 03:20:29,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:20:29,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:29,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:20:29,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:20:29,252 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2020-10-29 03:20:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:29,916 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 03:20:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:20:29,917 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-29 03:20:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:29,918 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:20:29,918 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:20:29,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:20:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:20:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:20:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:20:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 03:20:29,937 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 106 [2020-10-29 03:20:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:29,937 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 03:20:29,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:20:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 03:20:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:20:29,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:29,939 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:29,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:20:29,939 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2075018135, now seen corresponding path program 13 times [2020-10-29 03:20:29,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:29,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949572690] [2020-10-29 03:20:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:34,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:20:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:20:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:34,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:35,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:35,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:35,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:35,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:35,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:35,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:35,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:35,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:35,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:35,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:35,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:35,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:35,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:35,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:35,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 03:20:35,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:35,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:20:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:35,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:35,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:35,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 03:20:35,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:35,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:35,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:20:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:35,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:35,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:35,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 03:20:35,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:35,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 03:20:35,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949572690] [2020-10-29 03:20:35,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:35,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:20:35,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372923830] [2020-10-29 03:20:35,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:20:35,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:35,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:20:35,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:20:35,906 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 17 states. [2020-10-29 03:20:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:36,649 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 03:20:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:20:36,650 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 03:20:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:36,651 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:20:36,651 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:20:36,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:20:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:20:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:20:36,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:20:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 03:20:36,668 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 112 [2020-10-29 03:20:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:36,669 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 03:20:36,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:20:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 03:20:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:20:36,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:36,671 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:36,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:20:36,672 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:36,672 INFO L82 PathProgramCache]: Analyzing trace with hash 487500277, now seen corresponding path program 14 times [2020-10-29 03:20:36,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:36,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198514828] [2020-10-29 03:20:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 03:20:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:41,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:41,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:41,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:41,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:41,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 03:20:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:41,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:20:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:42,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:20:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:42,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:42,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:42,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 03:20:42,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198514828] [2020-10-29 03:20:42,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:42,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:20:42,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123176232] [2020-10-29 03:20:42,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:20:42,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:42,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:20:42,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:20:42,473 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 18 states. [2020-10-29 03:20:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:43,201 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 03:20:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:20:43,201 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-29 03:20:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:43,202 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:20:43,202 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:20:43,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:20:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:20:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:20:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:20:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-29 03:20:43,216 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 118 [2020-10-29 03:20:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:43,216 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-29 03:20:43,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:20:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-29 03:20:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:20:43,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:43,218 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:43,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:20:43,218 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:43,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1139535405, now seen corresponding path program 15 times [2020-10-29 03:20:43,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:43,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495823376] [2020-10-29 03:20:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:48,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:48,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:20:48,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:20:48,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:48,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:48,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:48,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:48,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:48,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 03:20:48,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:48,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:48,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:20:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:20:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 03:20:49,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495823376] [2020-10-29 03:20:49,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:49,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:20:49,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514287368] [2020-10-29 03:20:49,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:20:49,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:49,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:20:49,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:20:49,113 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2020-10-29 03:20:49,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:49,991 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 03:20:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:20:49,992 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-29 03:20:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:49,993 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:20:49,993 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:20:49,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:20:49,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:20:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:20:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:20:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 03:20:50,000 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 124 [2020-10-29 03:20:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:50,000 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 03:20:50,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:20:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 03:20:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:20:50,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:50,002 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:50,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:20:50,002 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash -497624271, now seen corresponding path program 16 times [2020-10-29 03:20:50,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:50,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733006685] [2020-10-29 03:20:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:55,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:55,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:55,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:55,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:55,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:55,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:20:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:55,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:55,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:55,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 03:20:55,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:55,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:55,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:20:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:55,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 03:20:55,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:55,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 03:20:55,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733006685] [2020-10-29 03:20:55,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:55,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:20:55,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500393794] [2020-10-29 03:20:55,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:20:55,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:55,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:20:55,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:20:55,997 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 20 states. [2020-10-29 03:20:56,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:56,891 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 03:20:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:20:56,892 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-29 03:20:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:56,893 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:20:56,893 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:20:56,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:20:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:20:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:20:56,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:20:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-29 03:20:56,901 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 130 [2020-10-29 03:20:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:56,902 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-29 03:20:56,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:20:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-29 03:20:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:20:56,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:56,903 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:56,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:20:56,904 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:56,904 INFO L82 PathProgramCache]: Analyzing trace with hash -670603761, now seen corresponding path program 17 times [2020-10-29 03:20:56,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:56,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585328283] [2020-10-29 03:20:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:01,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:21:01,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:21:01,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:01,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:01,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:01,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:01,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:01,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:01,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:01,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:01,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:01,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:01,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:02,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:21:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 03:21:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:02,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:02,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:21:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:02,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:02,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:21:02,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 03:21:02,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:02,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:21:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:02,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:02,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:21:02,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 03:21:02,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:02,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:02,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 03:21:03,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585328283] [2020-10-29 03:21:03,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:03,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:21:03,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001748381] [2020-10-29 03:21:03,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:21:03,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:03,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:21:03,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:21:03,024 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 21 states. [2020-10-29 03:21:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:04,012 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 03:21:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:21:04,013 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-29 03:21:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:04,014 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:21:04,014 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:21:04,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:21:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:21:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:21:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:21:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 03:21:04,023 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 136 [2020-10-29 03:21:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:04,023 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 03:21:04,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:21:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 03:21:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:21:04,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:04,025 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:04,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:21:04,025 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:04,026 INFO L82 PathProgramCache]: Analyzing trace with hash 435032685, now seen corresponding path program 18 times [2020-10-29 03:21:04,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:04,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543912363] [2020-10-29 03:21:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:09,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:09,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:09,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:09,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:09,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:09,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:09,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:09,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:09,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:09,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:09,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:09,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:09,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 03:21:09,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:09,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:09,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:21:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:09,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:21:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:09,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 03:21:10,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543912363] [2020-10-29 03:21:10,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:10,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:21:10,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136428827] [2020-10-29 03:21:10,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:21:10,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:10,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:21:10,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:21:10,252 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 22 states. [2020-10-29 03:21:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:11,319 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 03:21:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:21:11,320 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-29 03:21:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:11,323 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:21:11,324 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:21:11,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:21:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:21:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:21:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:21:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 03:21:11,337 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 142 [2020-10-29 03:21:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:11,337 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 03:21:11,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:21:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 03:21:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:21:11,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:11,340 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:11,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:21:11,341 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:11,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1332428875, now seen corresponding path program 19 times [2020-10-29 03:21:11,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:11,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035327674] [2020-10-29 03:21:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:16,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:21:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:16,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:16,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:16,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:16,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-29 03:21:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:16,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:21:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:17,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:17,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-29 03:21:17,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:17,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:21:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:17,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:17,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:17,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 03:21:17,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:17,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:21:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 03:21:17,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035327674] [2020-10-29 03:21:17,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:17,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:21:17,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669629020] [2020-10-29 03:21:17,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:21:17,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:17,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:21:17,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:21:17,942 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 23 states. [2020-10-29 03:21:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:19,040 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 03:21:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:21:19,040 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-10-29 03:21:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:19,041 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:21:19,041 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:21:19,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:21:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:21:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:21:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:21:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 03:21:19,054 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 148 [2020-10-29 03:21:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:19,054 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 03:21:19,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:21:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 03:21:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 03:21:19,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:19,057 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:19,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:21:19,058 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:19,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:19,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1065922647, now seen corresponding path program 20 times [2020-10-29 03:21:19,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:19,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287542056] [2020-10-29 03:21:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:24,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:24,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:24,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:24,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:24,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:24,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:24,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 03:21:24,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:24,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:24,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:21:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:21:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:25,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:25,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:25,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-29 03:21:25,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:25,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 03:21:25,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287542056] [2020-10-29 03:21:25,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:25,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:21:25,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311498689] [2020-10-29 03:21:25,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:21:25,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:25,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:21:25,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:21:25,767 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 24 states. [2020-10-29 03:21:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:26,972 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-29 03:21:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:21:26,973 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 154 [2020-10-29 03:21:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:26,974 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:21:26,974 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:21:26,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:21:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:21:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:21:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:21:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-29 03:21:26,981 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 154 [2020-10-29 03:21:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:26,981 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-29 03:21:26,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:21:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-29 03:21:26,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:21:26,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:26,982 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:26,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:21:26,983 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:26,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1268949127, now seen corresponding path program 21 times [2020-10-29 03:21:26,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:26,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747895537] [2020-10-29 03:21:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:32,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:32,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:32,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:32,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:32,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:32,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:32,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:32,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:32,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-29 03:21:32,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:32,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:32,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:21:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:32,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:33,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:21:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-29 03:21:33,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:33,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 03:21:33,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747895537] [2020-10-29 03:21:33,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:33,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:21:33,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3214915] [2020-10-29 03:21:33,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:21:33,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:33,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:21:33,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:21:33,625 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 25 states. [2020-10-29 03:21:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:34,856 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-29 03:21:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:21:34,857 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 160 [2020-10-29 03:21:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:34,860 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:21:34,861 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:21:34,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:21:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:21:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:21:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:21:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-29 03:21:34,868 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 160 [2020-10-29 03:21:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:34,868 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-29 03:21:34,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:21:34,868 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-29 03:21:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 03:21:34,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:34,870 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:34,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:21:34,870 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:34,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:34,871 INFO L82 PathProgramCache]: Analyzing trace with hash -602565915, now seen corresponding path program 22 times [2020-10-29 03:21:34,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:34,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217933957] [2020-10-29 03:21:34,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:39,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:39,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:39,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:39,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:21:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:41,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:41,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-29 03:21:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:41,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:21:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:41,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:41,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:41,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 03:21:41,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:41,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:21:41,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217933957] [2020-10-29 03:21:41,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:41,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:21:41,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524074362] [2020-10-29 03:21:41,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:21:41,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:41,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:21:41,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:21:41,704 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 26 states. [2020-10-29 03:21:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:43,007 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-29 03:21:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:21:43,009 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 166 [2020-10-29 03:21:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:43,010 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:21:43,010 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:21:43,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:21:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:21:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:21:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:21:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-29 03:21:43,019 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 166 [2020-10-29 03:21:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:43,019 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-29 03:21:43,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:21:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-29 03:21:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 03:21:43,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:43,021 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:43,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:21:43,021 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:43,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1603307203, now seen corresponding path program 23 times [2020-10-29 03:21:43,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:43,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064117002] [2020-10-29 03:21:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:48,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 03:21:48,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:48,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:21:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:48,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:21:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:48,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:48,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:48,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:48,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:48,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:48,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:48,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:48,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:49,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:21:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:49,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:49,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:21:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 03:21:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064117002] [2020-10-29 03:21:50,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:50,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:21:50,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363392845] [2020-10-29 03:21:50,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:21:50,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:21:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:21:50,095 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 27 states. [2020-10-29 03:21:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:51,479 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-29 03:21:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:21:51,479 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 172 [2020-10-29 03:21:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:51,480 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:21:51,480 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:21:51,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:21:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:21:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:21:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:21:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-29 03:21:51,488 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 172 [2020-10-29 03:21:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:51,488 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-29 03:21:51,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:21:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-29 03:21:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 03:21:51,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:51,490 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:51,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:21:51,490 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1013701665, now seen corresponding path program 24 times [2020-10-29 03:21:51,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:51,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033894229] [2020-10-29 03:21:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:56,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:56,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:56,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:57,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:57,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:21:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:21:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:58,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-29 03:21:58,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:58,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:58,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 03:21:58,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033894229] [2020-10-29 03:21:58,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:58,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:21:58,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779138702] [2020-10-29 03:21:58,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:21:58,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:58,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:21:58,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:21:58,694 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 28 states. [2020-10-29 03:22:00,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:00,163 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-29 03:22:00,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:22:00,163 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 178 [2020-10-29 03:22:00,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:00,165 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:22:00,165 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:22:00,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:22:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:22:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:22:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:22:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-29 03:22:00,173 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 178 [2020-10-29 03:22:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:00,173 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-29 03:22:00,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:22:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-29 03:22:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:22:00,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:00,175 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:00,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:22:00,175 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:00,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:00,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1201140479, now seen corresponding path program 25 times [2020-10-29 03:22:00,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:00,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985853180] [2020-10-29 03:22:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:05,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:05,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:05,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:05,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:05,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 03:22:05,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:05,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:22:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:06,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:06,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:22:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:07,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-29 03:22:07,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:07,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-29 03:22:07,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985853180] [2020-10-29 03:22:07,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:07,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:22:07,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076825176] [2020-10-29 03:22:07,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:22:07,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:07,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:22:07,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:22:07,202 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 29 states. [2020-10-29 03:22:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:08,819 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-29 03:22:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:22:08,820 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 184 [2020-10-29 03:22:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:08,821 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:22:08,821 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:22:08,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:22:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:22:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:22:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:22:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-29 03:22:08,832 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 184 [2020-10-29 03:22:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:08,832 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-29 03:22:08,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:22:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-29 03:22:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 03:22:08,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:08,834 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:08,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:22:08,834 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash 983378781, now seen corresponding path program 26 times [2020-10-29 03:22:08,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:08,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523526102] [2020-10-29 03:22:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 03:22:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:13,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:13,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:14,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:14,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-29 03:22:14,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:14,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:22:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:15,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:15,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:15,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:15,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:15,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-29 03:22:15,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:15,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:15,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:15,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:22:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 03:22:16,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523526102] [2020-10-29 03:22:16,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:16,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:22:16,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155589233] [2020-10-29 03:22:16,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:22:16,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:16,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:22:16,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:22:16,179 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 30 states. [2020-10-29 03:22:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:17,819 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-29 03:22:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:22:17,819 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 190 [2020-10-29 03:22:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:17,820 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:22:17,821 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:22:17,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:22:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:22:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:22:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:22:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-29 03:22:17,833 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 190 [2020-10-29 03:22:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:17,834 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-29 03:22:17,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:22:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-29 03:22:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 03:22:17,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:17,836 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:17,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:22:17,837 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:17,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1449401029, now seen corresponding path program 27 times [2020-10-29 03:22:17,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:17,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520900141] [2020-10-29 03:22:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:22,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:22,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:22,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:22,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:22,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:22,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:22,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:22,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:22,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:22,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:22,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:22:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:24,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:22:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-29 03:22:25,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:25,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 03:22:25,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520900141] [2020-10-29 03:22:25,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:25,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:22:25,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205527492] [2020-10-29 03:22:25,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:22:25,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:22:25,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:22:25,206 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 31 states. [2020-10-29 03:22:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:26,892 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-29 03:22:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:22:26,892 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 196 [2020-10-29 03:22:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:26,894 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:22:26,894 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:22:26,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:22:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:22:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:22:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:22:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-29 03:22:26,902 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 196 [2020-10-29 03:22:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:26,903 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-29 03:22:26,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:22:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-29 03:22:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:22:26,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:26,904 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:26,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:22:26,904 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:26,905 INFO L82 PathProgramCache]: Analyzing trace with hash 2035056793, now seen corresponding path program 28 times [2020-10-29 03:22:26,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:26,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860946745] [2020-10-29 03:22:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:31,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:31,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:31,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:22:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:22:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:34,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:34,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:34,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 03:22:34,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860946745] [2020-10-29 03:22:34,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:34,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:22:34,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430193339] [2020-10-29 03:22:34,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:22:34,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:34,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:22:34,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:22:34,462 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 32 states. [2020-10-29 03:22:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:36,184 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-29 03:22:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:22:36,184 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-10-29 03:22:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:36,185 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:22:36,186 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:22:36,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:22:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:22:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:22:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:22:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-29 03:22:36,194 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 202 [2020-10-29 03:22:36,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:36,195 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-29 03:22:36,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:22:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-29 03:22:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 03:22:36,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:36,196 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:36,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:22:36,196 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash -721461897, now seen corresponding path program 29 times [2020-10-29 03:22:36,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:36,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017746043] [2020-10-29 03:22:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:36,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 03:22:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 03:22:41,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:41,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:41,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:41,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:41,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:41,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:41,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:22:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:43,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:43,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 03:22:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:43,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:44,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:44,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:44,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-29 03:22:44,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:44,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:44,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:44,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 03:22:44,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017746043] [2020-10-29 03:22:44,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:44,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:22:44,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237130594] [2020-10-29 03:22:44,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:22:44,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:44,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:22:44,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:22:44,104 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 33 states. [2020-10-29 03:22:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:45,944 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-29 03:22:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:22:45,945 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 208 [2020-10-29 03:22:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:45,946 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:22:45,946 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:22:45,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:22:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:22:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:22:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:22:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-29 03:22:45,955 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 208 [2020-10-29 03:22:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:45,955 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-29 03:22:45,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:22:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-29 03:22:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 03:22:45,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:45,957 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:45,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:22:45,957 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:45,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1533223979, now seen corresponding path program 30 times [2020-10-29 03:22:45,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:45,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996349024] [2020-10-29 03:22:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:51,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:51,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 03:22:51,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 03:22:51,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:51,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:51,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:51,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:51,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:52,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:22:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:52,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:53,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:22:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:54,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:54,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:54,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-29 03:22:54,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:54,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-29 03:22:54,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996349024] [2020-10-29 03:22:54,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:54,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:22:54,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124326358] [2020-10-29 03:22:54,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:22:54,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:54,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:22:54,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:22:54,104 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 34 states. [2020-10-29 03:22:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:56,119 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-29 03:22:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:22:56,120 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 214 [2020-10-29 03:22:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:56,120 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:22:56,121 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:22:56,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:22:56,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:22:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:22:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:22:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-29 03:22:56,127 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 214 [2020-10-29 03:22:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:56,127 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-29 03:22:56,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:22:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-29 03:22:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 03:22:56,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:56,129 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:56,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:22:56,129 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2103092301, now seen corresponding path program 31 times [2020-10-29 03:22:56,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:56,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641069971] [2020-10-29 03:22:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:56,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 03:23:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 03:23:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:23:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:01,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:02,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:23:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:03,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:23:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-29 03:23:03,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:03,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:23:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:04,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-29 03:23:04,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641069971] [2020-10-29 03:23:04,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:04,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:23:04,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494637548] [2020-10-29 03:23:04,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:23:04,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:04,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:23:04,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:23:04,662 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 35 states.