/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:47:16,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:47:16,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:47:16,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:47:16,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:47:16,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:47:16,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:47:16,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:47:16,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:47:16,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:47:16,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:47:16,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:47:16,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:47:16,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:47:16,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:47:16,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:47:16,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:47:16,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:47:16,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:47:16,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:47:16,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:47:16,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:47:16,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:47:16,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:47:16,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:47:16,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:47:16,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:47:16,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:47:16,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:47:16,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-14 00:47:16,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:47:16,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:47:16,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:47:16,209 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 [2020-10-14 00:47:16,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:47:16,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:47:16,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:47:16,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:47:16,233 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:47:16,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:47:16,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:47:16,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:47:16,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:47:16,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:47:16,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:47:16,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:47:16,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:47:16,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:47:16,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:47:16,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:47:16,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:47:16,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:47:16,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:47:16,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:47:16,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:47:16,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:47:16,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:47:16,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:47:16,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:47:16,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:47:16,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:47:16,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:47:16,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:47:16,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:47:16,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:47:16,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:47:16,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:47:16,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:47:16,530 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:47:16,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-14 00:47:16,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/389712783/ec80dd1d341945cd961d810226fbe399/FLAGd62d6e4cc [2020-10-14 00:47:17,311 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:47:17,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-14 00:47:17,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/389712783/ec80dd1d341945cd961d810226fbe399/FLAGd62d6e4cc [2020-10-14 00:47:17,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/389712783/ec80dd1d341945cd961d810226fbe399 [2020-10-14 00:47:17,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:47:17,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:47:17,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:47:17,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:47:17,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:47:17,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:47:17" (1/1) ... [2020-10-14 00:47:17,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3237631e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:17, skipping insertion in model container [2020-10-14 00:47:17,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:47:17" (1/1) ... [2020-10-14 00:47:17,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:47:17,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:47:18,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:47:18,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:47:18,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:47:19,019 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:47:19,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19 WrapperNode [2020-10-14 00:47:19,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:47:19,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:47:19,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:47:19,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:47:19,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (1/1) ... [2020-10-14 00:47:19,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (1/1) ... [2020-10-14 00:47:19,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (1/1) ... [2020-10-14 00:47:19,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (1/1) ... [2020-10-14 00:47:19,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (1/1) ... [2020-10-14 00:47:19,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (1/1) ... [2020-10-14 00:47:19,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (1/1) ... [2020-10-14 00:47:19,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:47:19,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:47:19,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:47:19,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:47:19,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (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 [2020-10-14 00:47:19,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:47:19,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:47:19,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:47:19,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:47:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:47:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:47:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:47:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:47:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:47:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:47:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:47:21,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:47:21,253 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:47:21,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:47:21 BoogieIcfgContainer [2020-10-14 00:47:21,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:47:21,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:47:21,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:47:21,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:47:21,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:47:17" (1/3) ... [2020-10-14 00:47:21,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a332bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:47:21, skipping insertion in model container [2020-10-14 00:47:21,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:19" (2/3) ... [2020-10-14 00:47:21,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a332bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:47:21, skipping insertion in model container [2020-10-14 00:47:21,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:47:21" (3/3) ... [2020-10-14 00:47:21,269 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2020-10-14 00:47:21,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:47:21,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:47:21,302 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:47:21,330 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:47:21,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:47:21,330 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:47:21,330 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:47:21,330 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:47:21,331 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:47:21,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:47:21,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:47:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:47:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 00:47:21,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:21,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:21,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:21,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1944252984, now seen corresponding path program 1 times [2020-10-14 00:47:21,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:21,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356346261] [2020-10-14 00:47:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:25,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 00:47:25,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:25,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3386 [2020-10-14 00:47:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:25,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:47:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 00:47:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:47:25,633 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:25,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:25,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:47:25,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:25,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:25,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:25,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356346261] [2020-10-14 00:47:25,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:47:25,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:47:25,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306619402] [2020-10-14 00:47:25,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:47:25,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:25,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:47:25,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:47:25,932 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:47:26,146 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:47:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:29,004 INFO L93 Difference]: Finished difference Result 867 states and 1525 transitions. [2020-10-14 00:47:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:29,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-14 00:47:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:29,042 INFO L225 Difference]: With dead ends: 867 [2020-10-14 00:47:29,043 INFO L226 Difference]: Without dead ends: 478 [2020-10-14 00:47:29,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-14 00:47:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 463. [2020-10-14 00:47:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 00:47:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 728 transitions. [2020-10-14 00:47:29,144 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 728 transitions. Word has length 161 [2020-10-14 00:47:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:29,145 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 728 transitions. [2020-10-14 00:47:29,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:47:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 728 transitions. [2020-10-14 00:47:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 00:47:29,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:29,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:29,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:47:29,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:29,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2052313592, now seen corresponding path program 1 times [2020-10-14 00:47:29,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:29,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123668996] [2020-10-14 00:47:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:31,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:31,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 00:47:31,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-10-14 00:47:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:31,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 00:47:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 00:47:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:32,185 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:32,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:32,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:32,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:32,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:32,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:32,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:47:32,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:32,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:47:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:32,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123668996] [2020-10-14 00:47:32,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:32,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:32,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108253341] [2020-10-14 00:47:32,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:32,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:32,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:32,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:32,365 INFO L87 Difference]: Start difference. First operand 463 states and 728 transitions. Second operand 5 states. [2020-10-14 00:47:32,519 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:34,906 INFO L93 Difference]: Finished difference Result 1368 states and 2180 transitions. [2020-10-14 00:47:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:34,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 00:47:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:34,919 INFO L225 Difference]: With dead ends: 1368 [2020-10-14 00:47:34,919 INFO L226 Difference]: Without dead ends: 911 [2020-10-14 00:47:34,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-10-14 00:47:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 893. [2020-10-14 00:47:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-14 00:47:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1403 transitions. [2020-10-14 00:47:35,001 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1403 transitions. Word has length 171 [2020-10-14 00:47:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:35,002 INFO L479 AbstractCegarLoop]: Abstraction has 893 states and 1403 transitions. [2020-10-14 00:47:35,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1403 transitions. [2020-10-14 00:47:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 00:47:35,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:35,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:35,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:47:35,011 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:35,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2050610879, now seen corresponding path program 1 times [2020-10-14 00:47:35,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:35,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778280991] [2020-10-14 00:47:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 00:47:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:47:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 00:47:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:47:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 00:47:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:40,409 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:40,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:47:40,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:40,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:47:40,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:47:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:40,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:47:40,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 00:47:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:47:40,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778280991] [2020-10-14 00:47:40,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:40,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:40,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675124565] [2020-10-14 00:47:40,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:40,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:40,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:40,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:40,691 INFO L87 Difference]: Start difference. First operand 893 states and 1403 transitions. Second operand 5 states. [2020-10-14 00:47:40,939 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:43,573 INFO L93 Difference]: Finished difference Result 2631 states and 4200 transitions. [2020-10-14 00:47:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:43,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 00:47:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:43,585 INFO L225 Difference]: With dead ends: 2631 [2020-10-14 00:47:43,585 INFO L226 Difference]: Without dead ends: 1744 [2020-10-14 00:47:43,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-10-14 00:47:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1738. [2020-10-14 00:47:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-14 00:47:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2618 transitions. [2020-10-14 00:47:43,653 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2618 transitions. Word has length 181 [2020-10-14 00:47:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:43,653 INFO L479 AbstractCegarLoop]: Abstraction has 1738 states and 2618 transitions. [2020-10-14 00:47:43,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2618 transitions. [2020-10-14 00:47:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 00:47:43,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:43,660 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:43,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:47:43,661 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:43,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1458358527, now seen corresponding path program 1 times [2020-10-14 00:47:43,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:43,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50890819] [2020-10-14 00:47:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:44,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:46,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:48,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 00:47:48,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:47:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 00:47:48,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:48,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:47:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 00:47:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:48,967 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:48,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:48,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:48,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:48,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:48,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:49,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:49,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:47:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:49,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:49,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:47:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:49,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:47:49,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50890819] [2020-10-14 00:47:49,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:49,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:49,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16144337] [2020-10-14 00:47:49,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:49,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:49,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:49,226 INFO L87 Difference]: Start difference. First operand 1738 states and 2618 transitions. Second operand 5 states. [2020-10-14 00:47:49,712 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:52,271 INFO L93 Difference]: Finished difference Result 5149 states and 7838 transitions. [2020-10-14 00:47:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:52,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 00:47:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:52,282 INFO L225 Difference]: With dead ends: 5149 [2020-10-14 00:47:52,283 INFO L226 Difference]: Without dead ends: 1741 [2020-10-14 00:47:52,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-14 00:47:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1737. [2020-10-14 00:47:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2020-10-14 00:47:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2616 transitions. [2020-10-14 00:47:52,351 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2616 transitions. Word has length 181 [2020-10-14 00:47:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:52,353 INFO L479 AbstractCegarLoop]: Abstraction has 1737 states and 2616 transitions. [2020-10-14 00:47:52,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2616 transitions. [2020-10-14 00:47:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 00:47:52,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:52,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:52,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:47:52,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:52,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1503254335, now seen corresponding path program 1 times [2020-10-14 00:47:52,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:52,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150427660] [2020-10-14 00:47:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:54,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 00:47:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-14 00:47:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:54,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:47:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 00:47:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:54,528 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:54,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:54,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:54,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:47:54,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:54,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:54,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:47:54,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:54,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:47:54,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:54,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:47:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:54,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150427660] [2020-10-14 00:47:54,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:54,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:54,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423690044] [2020-10-14 00:47:54,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:54,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:54,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:54,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:54,745 INFO L87 Difference]: Start difference. First operand 1737 states and 2616 transitions. Second operand 5 states. [2020-10-14 00:47:54,871 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:57,165 INFO L93 Difference]: Finished difference Result 5160 states and 7975 transitions. [2020-10-14 00:47:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:57,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-14 00:47:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:57,190 INFO L225 Difference]: With dead ends: 5160 [2020-10-14 00:47:57,190 INFO L226 Difference]: Without dead ends: 3429 [2020-10-14 00:47:57,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2020-10-14 00:47:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2991. [2020-10-14 00:47:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2991 states. [2020-10-14 00:47:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4579 transitions. [2020-10-14 00:47:57,306 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4579 transitions. Word has length 180 [2020-10-14 00:47:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:57,306 INFO L479 AbstractCegarLoop]: Abstraction has 2991 states and 4579 transitions. [2020-10-14 00:47:57,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4579 transitions. [2020-10-14 00:47:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 00:47:57,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:57,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:57,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:47:57,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:57,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1898988248, now seen corresponding path program 1 times [2020-10-14 00:47:57,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:57,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263114737] [2020-10-14 00:47:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:02,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 00:48:02,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:48:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:48:02,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:02,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:48:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 00:48:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:02,582 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:02,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:02,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:02,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:02,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:02,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:02,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:48:02,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:48:02,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:02,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:02,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:48:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:02,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:48:02,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:02,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:48:02,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:02,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:48:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 00:48:02,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263114737] [2020-10-14 00:48:02,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:02,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:48:02,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035184949] [2020-10-14 00:48:02,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:48:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:02,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:48:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:48:02,794 INFO L87 Difference]: Start difference. First operand 2991 states and 4579 transitions. Second operand 5 states. [2020-10-14 00:48:02,925 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:05,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:05,220 INFO L93 Difference]: Finished difference Result 8491 states and 13453 transitions. [2020-10-14 00:48:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:05,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-14 00:48:05,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:05,259 INFO L225 Difference]: With dead ends: 8491 [2020-10-14 00:48:05,259 INFO L226 Difference]: Without dead ends: 5506 [2020-10-14 00:48:05,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:48:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5506 states. [2020-10-14 00:48:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 5500. [2020-10-14 00:48:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5500 states. [2020-10-14 00:48:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 8506 transitions. [2020-10-14 00:48:05,452 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 8506 transitions. Word has length 191 [2020-10-14 00:48:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:05,453 INFO L479 AbstractCegarLoop]: Abstraction has 5500 states and 8506 transitions. [2020-10-14 00:48:05,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:48:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 8506 transitions. [2020-10-14 00:48:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 00:48:05,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:05,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:05,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:48:05,473 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:05,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:05,474 INFO L82 PathProgramCache]: Analyzing trace with hash -635534872, now seen corresponding path program 1 times [2020-10-14 00:48:05,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:05,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589483490] [2020-10-14 00:48:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 00:48:07,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:48:07,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1746 [2020-10-14 00:48:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:48:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:48:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 00:48:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,473 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:07,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:48:07,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:48:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:07,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:07,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:48:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 00:48:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:07,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:48:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:48:07,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589483490] [2020-10-14 00:48:07,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:48:07,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:48:07,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722573360] [2020-10-14 00:48:07,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:07,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:07,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:07,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:07,839 INFO L87 Difference]: Start difference. First operand 5500 states and 8506 transitions. Second operand 7 states. [2020-10-14 00:48:07,987 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:08,454 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:10,981 INFO L93 Difference]: Finished difference Result 16451 states and 27347 transitions. [2020-10-14 00:48:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:10,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-14 00:48:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:11,068 INFO L225 Difference]: With dead ends: 16451 [2020-10-14 00:48:11,068 INFO L226 Difference]: Without dead ends: 10957 [2020-10-14 00:48:11,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10957 states. [2020-10-14 00:48:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10957 to 10851. [2020-10-14 00:48:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10851 states. [2020-10-14 00:48:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10851 states to 10851 states and 16785 transitions. [2020-10-14 00:48:11,503 INFO L78 Accepts]: Start accepts. Automaton has 10851 states and 16785 transitions. Word has length 238 [2020-10-14 00:48:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:11,504 INFO L479 AbstractCegarLoop]: Abstraction has 10851 states and 16785 transitions. [2020-10-14 00:48:11,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10851 states and 16785 transitions. [2020-10-14 00:48:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 00:48:11,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:11,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:11,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:48:11,547 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:11,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1019903621, now seen corresponding path program 1 times [2020-10-14 00:48:11,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:11,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303990283] [2020-10-14 00:48:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:14,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:14,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 00:48:14,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2995 [2020-10-14 00:48:14,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:14,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:48:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:48:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:14,743 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:14,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:14,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:14,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:14,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:14,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:14,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:14,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:14,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:14,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:14,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:14,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:48:14,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:48:14,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:14,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:48:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:48:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:15,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:48:15,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 00:48:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:15,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:48:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:15,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303990283] [2020-10-14 00:48:15,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:15,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:15,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788538251] [2020-10-14 00:48:15,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:15,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:15,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:15,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:15,097 INFO L87 Difference]: Start difference. First operand 10851 states and 16785 transitions. Second operand 7 states. [2020-10-14 00:48:15,400 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:15,522 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:20,913 INFO L93 Difference]: Finished difference Result 43523 states and 79334 transitions. [2020-10-14 00:48:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:20,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 00:48:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:21,267 INFO L225 Difference]: With dead ends: 43523 [2020-10-14 00:48:21,268 INFO L226 Difference]: Without dead ends: 32678 [2020-10-14 00:48:21,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32678 states. [2020-10-14 00:48:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32678 to 32081. [2020-10-14 00:48:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32081 states. [2020-10-14 00:48:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32081 states to 32081 states and 52562 transitions. [2020-10-14 00:48:23,457 INFO L78 Accepts]: Start accepts. Automaton has 32081 states and 52562 transitions. Word has length 247 [2020-10-14 00:48:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:23,457 INFO L479 AbstractCegarLoop]: Abstraction has 32081 states and 52562 transitions. [2020-10-14 00:48:23,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 32081 states and 52562 transitions. [2020-10-14 00:48:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 00:48:23,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:23,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:23,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:48:23,617 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:23,617 INFO L82 PathProgramCache]: Analyzing trace with hash 572253736, now seen corresponding path program 1 times [2020-10-14 00:48:23,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:23,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544310129] [2020-10-14 00:48:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:26,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 00:48:26,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:26,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3082 [2020-10-14 00:48:26,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:26,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:26,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:26,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:48:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:48:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:26,957 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:48:26,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:26,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:26,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:48:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 00:48:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:27,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:48:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:27,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:48:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:27,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:27,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:48:27,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 00:48:27,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:27,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:48:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:27,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544310129] [2020-10-14 00:48:27,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:27,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:27,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679336130] [2020-10-14 00:48:27,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:27,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:27,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:27,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:27,494 INFO L87 Difference]: Start difference. First operand 32081 states and 52562 transitions. Second operand 7 states. [2020-10-14 00:48:27,782 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:28,005 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:33,932 INFO L93 Difference]: Finished difference Result 127660 states and 246453 transitions. [2020-10-14 00:48:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:33,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-14 00:48:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:34,837 INFO L225 Difference]: With dead ends: 127660 [2020-10-14 00:48:34,837 INFO L226 Difference]: Without dead ends: 95589 [2020-10-14 00:48:35,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95589 states. [2020-10-14 00:48:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95589 to 95570. [2020-10-14 00:48:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95570 states. [2020-10-14 00:48:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95570 states to 95570 states and 185951 transitions. [2020-10-14 00:48:41,428 INFO L78 Accepts]: Start accepts. Automaton has 95570 states and 185951 transitions. Word has length 256 [2020-10-14 00:48:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:41,428 INFO L479 AbstractCegarLoop]: Abstraction has 95570 states and 185951 transitions. [2020-10-14 00:48:41,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:41,429 INFO L276 IsEmpty]: Start isEmpty. Operand 95570 states and 185951 transitions. [2020-10-14 00:48:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-14 00:48:41,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:41,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:41,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:48:41,913 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:41,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1591036369, now seen corresponding path program 1 times [2020-10-14 00:48:41,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:41,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704904555] [2020-10-14 00:48:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:48:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:47,156 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:47,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:47,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:47,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:47,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:48:47,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:48:47,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:47,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:48:47,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:48:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:47,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:47,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:48:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 00:48:47,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:47,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:48:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:47,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704904555] [2020-10-14 00:48:47,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:47,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:47,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062827288] [2020-10-14 00:48:47,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:47,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:47,574 INFO L87 Difference]: Start difference. First operand 95570 states and 185951 transitions. Second operand 7 states. [2020-10-14 00:48:47,818 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:47,955 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:48:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:56,419 INFO L93 Difference]: Finished difference Result 259292 states and 599012 transitions. [2020-10-14 00:48:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:56,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-14 00:48:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:58,185 INFO L225 Difference]: With dead ends: 259292 [2020-10-14 00:48:58,185 INFO L226 Difference]: Without dead ends: 163736 [2020-10-14 00:48:58,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:58,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163736 states. [2020-10-14 00:49:08,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163736 to 157664. [2020-10-14 00:49:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157664 states. [2020-10-14 00:49:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157664 states to 157664 states and 286686 transitions. [2020-10-14 00:49:08,909 INFO L78 Accepts]: Start accepts. Automaton has 157664 states and 286686 transitions. Word has length 257 [2020-10-14 00:49:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:08,910 INFO L479 AbstractCegarLoop]: Abstraction has 157664 states and 286686 transitions. [2020-10-14 00:49:08,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:08,910 INFO L276 IsEmpty]: Start isEmpty. Operand 157664 states and 286686 transitions. [2020-10-14 00:49:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 00:49:09,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:09,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:09,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:49:09,644 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:09,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:09,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1547870733, now seen corresponding path program 1 times [2020-10-14 00:49:09,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:09,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361152789] [2020-10-14 00:49:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:09,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:10,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:10,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 00:49:10,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-14 00:49:10,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:10,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:49:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:49:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 00:49:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:10,727 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:10,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:10,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:49:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:11,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:11,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 00:49:11,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 00:49:11,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:11,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 00:49:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:49:11,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361152789] [2020-10-14 00:49:11,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:49:11,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:49:11,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529631418] [2020-10-14 00:49:11,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:11,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:11,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:11,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:11,153 INFO L87 Difference]: Start difference. First operand 157664 states and 286686 transitions. Second operand 7 states. [2020-10-14 00:49:11,296 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:14,864 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:20,783 INFO L93 Difference]: Finished difference Result 316063 states and 583919 transitions. [2020-10-14 00:49:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:20,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-14 00:49:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:21,778 INFO L225 Difference]: With dead ends: 316063 [2020-10-14 00:49:21,778 INFO L226 Difference]: Without dead ends: 158469 [2020-10-14 00:49:22,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158469 states. [2020-10-14 00:49:25,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158469 to 157998. [2020-10-14 00:49:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157998 states. [2020-10-14 00:49:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157998 states to 157998 states and 261292 transitions. [2020-10-14 00:49:26,571 INFO L78 Accepts]: Start accepts. Automaton has 157998 states and 261292 transitions. Word has length 262 [2020-10-14 00:49:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:26,571 INFO L479 AbstractCegarLoop]: Abstraction has 157998 states and 261292 transitions. [2020-10-14 00:49:26,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:26,571 INFO L276 IsEmpty]: Start isEmpty. Operand 157998 states and 261292 transitions. [2020-10-14 00:49:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 00:49:31,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:31,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:31,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:49:31,387 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash 764219274, now seen corresponding path program 1 times [2020-10-14 00:49:31,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:31,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255386426] [2020-10-14 00:49:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:31,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:34,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 00:49:34,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:49:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3478 [2020-10-14 00:49:34,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:34,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:49:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 00:49:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,117 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:49:35,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:49:35,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:49:35,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:49:35,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:49:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:35,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 00:49:35,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 00:49:35,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:35,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 00:49:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:49:35,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255386426] [2020-10-14 00:49:35,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:35,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:35,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023485386] [2020-10-14 00:49:35,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:35,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:35,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:35,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:35,560 INFO L87 Difference]: Start difference. First operand 157998 states and 261292 transitions. Second operand 7 states. [2020-10-14 00:49:35,801 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:36,556 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:46,050 INFO L93 Difference]: Finished difference Result 373164 states and 680190 transitions. [2020-10-14 00:49:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:49:46,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-14 00:49:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:47,349 INFO L225 Difference]: With dead ends: 373164 [2020-10-14 00:49:47,349 INFO L226 Difference]: Without dead ends: 215192 [2020-10-14 00:49:47,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215192 states. [2020-10-14 00:50:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215192 to 205010. [2020-10-14 00:50:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205010 states. [2020-10-14 00:50:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205010 states to 205010 states and 347763 transitions. [2020-10-14 00:50:03,439 INFO L78 Accepts]: Start accepts. Automaton has 205010 states and 347763 transitions. Word has length 294 [2020-10-14 00:50:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:03,439 INFO L479 AbstractCegarLoop]: Abstraction has 205010 states and 347763 transitions. [2020-10-14 00:50:03,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 205010 states and 347763 transitions. [2020-10-14 00:50:05,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 00:50:05,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:05,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:05,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:50:05,490 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:05,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:05,490 INFO L82 PathProgramCache]: Analyzing trace with hash 474457630, now seen corresponding path program 1 times [2020-10-14 00:50:05,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:05,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209820521] [2020-10-14 00:50:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:08,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:08,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 00:50:08,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2774 [2020-10-14 00:50:08,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:08,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:50:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:50:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 00:50:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:08,521 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:08,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:50:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:08,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:50:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:08,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 00:50:08,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 00:50:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:08,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 00:50:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:50:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:08,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:08,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:50:08,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 00:50:08,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:08,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 00:50:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 133 proven. 59 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:50:08,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209820521] [2020-10-14 00:50:08,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:08,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:08,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570597742] [2020-10-14 00:50:08,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:08,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:08,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:08,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:08,979 INFO L87 Difference]: Start difference. First operand 205010 states and 347763 transitions. Second operand 7 states. [2020-10-14 00:50:09,118 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:10,177 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:50:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:25,127 INFO L93 Difference]: Finished difference Result 452136 states and 734143 transitions. [2020-10-14 00:50:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:50:25,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-14 00:50:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:26,545 INFO L225 Difference]: With dead ends: 452136 [2020-10-14 00:50:26,545 INFO L226 Difference]: Without dead ends: 256644 [2020-10-14 00:50:26,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:50:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256644 states.