/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=NARROWEST --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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:21:44,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:21:44,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:21:44,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:21:44,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:21:44,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:21:44,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:21:44,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:21:44,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:21:44,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:21:44,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:21:44,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:21:44,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:21:44,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:21:44,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:21:44,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:21:44,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:21:44,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:21:44,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:21:44,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:21:44,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:21:44,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:21:44,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:21:44,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:21:44,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:21:44,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:21:44,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:21:44,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:21:44,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:21:44,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:21:44,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:21:44,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:21:44,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:21:44,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:21:44,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:21:44,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:21:44,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:21:44,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:21:44,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:21:44,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:21:44,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:21:44,267 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 [2020-10-13 06:21:44,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:21:44,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:21:44,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:21:44,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:21:44,290 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:21:44,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:21:44,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:21:44,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:21:44,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:21:44,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:21:44,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:21:44,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:21:44,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:21:44,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:21:44,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:21:44,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:21:44,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:21:44,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:21:44,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:21:44,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:21:44,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:21:44,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:21:44,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:21:44,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:21:44,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:21:44,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:21:44,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:21:44,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:21:44,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:21:44,296 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:21:44,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:21:44,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:21:44,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:21:44,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:21:44,590 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:21:44,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label32.c [2020-10-13 06:21:44,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ba6c048/a0c3c07a2c5f437dac26e48548c7ef84/FLAG75c8cf882 [2020-10-13 06:21:45,330 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:21:45,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label32.c [2020-10-13 06:21:45,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ba6c048/a0c3c07a2c5f437dac26e48548c7ef84/FLAG75c8cf882 [2020-10-13 06:21:45,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ba6c048/a0c3c07a2c5f437dac26e48548c7ef84 [2020-10-13 06:21:45,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:21:45,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:21:45,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:45,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:21:45,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:21:45,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:45" (1/1) ... [2020-10-13 06:21:45,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dbf34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:45, skipping insertion in model container [2020-10-13 06:21:45,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:45" (1/1) ... [2020-10-13 06:21:45,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:21:45,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:21:46,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:46,533 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:21:46,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:46,940 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:21:46,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46 WrapperNode [2020-10-13 06:21:46,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:46,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:21:46,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:21:46,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:21:46,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (1/1) ... [2020-10-13 06:21:46,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (1/1) ... [2020-10-13 06:21:47,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (1/1) ... [2020-10-13 06:21:47,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (1/1) ... [2020-10-13 06:21:47,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (1/1) ... [2020-10-13 06:21:47,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (1/1) ... [2020-10-13 06:21:47,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (1/1) ... [2020-10-13 06:21:47,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:21:47,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:21:47,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:21:47,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:21:47,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (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 [2020-10-13 06:21:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:21:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:21:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:21:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:21:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:21:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:21:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:21:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:21:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:21:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:21:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:21:49,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:21:49,039 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:21:49,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:49 BoogieIcfgContainer [2020-10-13 06:21:49,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:21:49,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:21:49,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:21:49,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:21:49,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:21:45" (1/3) ... [2020-10-13 06:21:49,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d37993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:49, skipping insertion in model container [2020-10-13 06:21:49,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:46" (2/3) ... [2020-10-13 06:21:49,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d37993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:49, skipping insertion in model container [2020-10-13 06:21:49,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:49" (3/3) ... [2020-10-13 06:21:49,068 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label32.c [2020-10-13 06:21:49,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:21:49,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:21:49,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:21:49,148 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:21:49,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:21:49,150 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:21:49,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:21:49,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:21:49,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:21:49,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:21:49,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:21:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:21:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 06:21:49,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:49,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:49,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash -846647824, now seen corresponding path program 1 times [2020-10-13 06:21:49,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:49,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354372485] [2020-10-13 06:21:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:54,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:54,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 06:21:54,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:54,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4402 [2020-10-13 06:21:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:21:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:21:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:21:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:21:55,485 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-13 06:21:55,642 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 06:21:56,042 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 86 [2020-10-13 06:21:56,427 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2020-10-13 06:21:56,968 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 95 [2020-10-13 06:21:57,470 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 89 [2020-10-13 06:21:57,956 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 83 [2020-10-13 06:21:58,426 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 75 [2020-10-13 06:21:58,887 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 59 [2020-10-13 06:21:59,049 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:59,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:59,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:59,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:21:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:21:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:21:59,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354372485] [2020-10-13 06:21:59,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:21:59,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:21:59,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820390179] [2020-10-13 06:21:59,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:21:59,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:59,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:21:59,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:59,887 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:22:00,310 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 06:22:01,108 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 188 [2020-10-13 06:22:01,940 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-10-13 06:22:02,892 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2020-10-13 06:22:04,283 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 230 DAG size of output: 203 [2020-10-13 06:22:05,901 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 231 DAG size of output: 200 [2020-10-13 06:22:07,634 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 235 DAG size of output: 196 [2020-10-13 06:22:11,258 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 237 DAG size of output: 193 [2020-10-13 06:22:12,400 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 189 [2020-10-13 06:22:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:15,471 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:22:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:22:15,476 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-10-13 06:22:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:15,493 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:22:15,493 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:22:15,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:22:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:22:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:22:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:22:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:22:15,582 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 195 [2020-10-13 06:22:15,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:15,583 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:22:15,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:22:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:22:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 06:22:15,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:15,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:15,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:22:15,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:15,589 INFO L82 PathProgramCache]: Analyzing trace with hash -95259881, now seen corresponding path program 1 times [2020-10-13 06:22:15,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:15,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758607811] [2020-10-13 06:22:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:20,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 06:22:20,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4836 [2020-10-13 06:22:20,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:22:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:22:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:22:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:21,716 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-13 06:22:21,857 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-13 06:22:22,090 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2020-10-13 06:22:22,399 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2020-10-13 06:22:22,710 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2020-10-13 06:22:22,998 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2020-10-13 06:22:23,218 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2020-10-13 06:22:23,389 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2020-10-13 06:22:23,549 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:23,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:23,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:22:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:22:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:23,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:23,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:23,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:23,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 06:22:23,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:22:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:23,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:22:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:24,110 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-13 06:22:24,618 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 120 [2020-10-13 06:22:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:25,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758607811] [2020-10-13 06:22:25,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:25,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:22:25,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980316212] [2020-10-13 06:22:25,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:22:25,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:25,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:22:25,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:22:25,225 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:22:25,491 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 06:22:26,054 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 85 [2020-10-13 06:22:26,462 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2020-10-13 06:22:26,978 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 91 [2020-10-13 06:22:27,766 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 183 [2020-10-13 06:22:28,669 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 203 [2020-10-13 06:22:29,721 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 200 [2020-10-13 06:22:30,336 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 106 [2020-10-13 06:22:32,329 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 297 DAG size of output: 197 [2020-10-13 06:22:35,388 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 298 DAG size of output: 194 [2020-10-13 06:22:39,277 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 191 [2020-10-13 06:22:40,283 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 186 [2020-10-13 06:22:41,887 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 157 [2020-10-13 06:22:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:44,556 INFO L93 Difference]: Finished difference Result 982 states and 1588 transitions. [2020-10-13 06:22:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 06:22:44,558 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 206 [2020-10-13 06:22:44,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:44,566 INFO L225 Difference]: With dead ends: 982 [2020-10-13 06:22:44,566 INFO L226 Difference]: Without dead ends: 739 [2020-10-13 06:22:44,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-10-13 06:22:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-10-13 06:22:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 729. [2020-10-13 06:22:44,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-13 06:22:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 998 transitions. [2020-10-13 06:22:44,624 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 998 transitions. Word has length 206 [2020-10-13 06:22:44,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:44,625 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 998 transitions. [2020-10-13 06:22:44,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:22:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 998 transitions. [2020-10-13 06:22:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 06:22:44,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:44,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:44,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:22:44,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash -312125621, now seen corresponding path program 1 times [2020-10-13 06:22:44,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:44,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605518069] [2020-10-13 06:22:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:45,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 06:22:45,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:22:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-13 06:22:45,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:22:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:46,065 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:46,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:46,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:46,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:22:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:22:46,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:46,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:46,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:46,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:22:46,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:46,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605518069] [2020-10-13 06:22:46,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:46,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:22:46,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696928049] [2020-10-13 06:22:46,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:22:46,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:46,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:22:46,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:22:46,690 INFO L87 Difference]: Start difference. First operand 729 states and 998 transitions. Second operand 5 states. [2020-10-13 06:22:46,982 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:22:49,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:49,423 INFO L93 Difference]: Finished difference Result 1697 states and 2467 transitions. [2020-10-13 06:22:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:22:49,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-13 06:22:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:49,429 INFO L225 Difference]: With dead ends: 1697 [2020-10-13 06:22:49,429 INFO L226 Difference]: Without dead ends: 719 [2020-10-13 06:22:49,432 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 [2020-10-13 06:22:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-10-13 06:22:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 717. [2020-10-13 06:22:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-10-13 06:22:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 935 transitions. [2020-10-13 06:22:49,461 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 935 transitions. Word has length 216 [2020-10-13 06:22:49,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:49,461 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 935 transitions. [2020-10-13 06:22:49,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:22:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 935 transitions. [2020-10-13 06:22:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 06:22:49,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:49,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:49,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:22:49,466 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:49,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1595904403, now seen corresponding path program 1 times [2020-10-13 06:22:49,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:49,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050321812] [2020-10-13 06:22:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:52,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:52,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 06:22:52,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2523 [2020-10-13 06:22:52,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:22:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:22:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:22:52,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:52,243 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:52,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:52,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:52,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:22:52,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:22:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:52,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:52,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:22:52,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 06:22:52,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:22:52,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:52,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050321812] [2020-10-13 06:22:52,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:22:52,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:22:52,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417339612] [2020-10-13 06:22:52,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:52,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:52,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:52,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:52,649 INFO L87 Difference]: Start difference. First operand 717 states and 935 transitions. Second operand 7 states. [2020-10-13 06:22:52,862 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:22:53,366 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:22:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:55,937 INFO L93 Difference]: Finished difference Result 1956 states and 2630 transitions. [2020-10-13 06:22:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:55,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-13 06:22:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:55,947 INFO L225 Difference]: With dead ends: 1956 [2020-10-13 06:22:55,947 INFO L226 Difference]: Without dead ends: 1348 [2020-10-13 06:22:55,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-10-13 06:22:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1198. [2020-10-13 06:22:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-13 06:22:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1507 transitions. [2020-10-13 06:22:55,994 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1507 transitions. Word has length 227 [2020-10-13 06:22:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:55,995 INFO L479 AbstractCegarLoop]: Abstraction has 1198 states and 1507 transitions. [2020-10-13 06:22:55,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1507 transitions. [2020-10-13 06:22:55,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 06:22:56,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:56,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:56,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:22:56,000 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:56,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:56,001 INFO L82 PathProgramCache]: Analyzing trace with hash 796726503, now seen corresponding path program 1 times [2020-10-13 06:22:56,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:56,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822334953] [2020-10-13 06:22:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:58,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:58,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 06:22:58,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1923 [2020-10-13 06:22:58,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:22:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:22:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 06:22:58,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:58,382 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:22:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:22:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:22:58,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:58,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:22:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:22:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:58,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822334953] [2020-10-13 06:22:58,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:58,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:22:58,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517877911] [2020-10-13 06:22:58,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:22:58,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:58,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:22:58,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:22:58,761 INFO L87 Difference]: Start difference. First operand 1198 states and 1507 transitions. Second operand 6 states. [2020-10-13 06:22:59,121 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 06:22:59,941 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 06:23:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:02,380 INFO L93 Difference]: Finished difference Result 2420 states and 3277 transitions. [2020-10-13 06:23:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:23:02,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2020-10-13 06:23:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:02,394 INFO L225 Difference]: With dead ends: 2420 [2020-10-13 06:23:02,394 INFO L226 Difference]: Without dead ends: 1759 [2020-10-13 06:23:02,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:23:02,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2020-10-13 06:23:02,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1560. [2020-10-13 06:23:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-10-13 06:23:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 1899 transitions. [2020-10-13 06:23:02,448 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 1899 transitions. Word has length 230 [2020-10-13 06:23:02,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:02,448 INFO L479 AbstractCegarLoop]: Abstraction has 1560 states and 1899 transitions. [2020-10-13 06:23:02,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:23:02,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 1899 transitions. [2020-10-13 06:23:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-13 06:23:02,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:02,456 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:02,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:23:02,456 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:02,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash 790621957, now seen corresponding path program 1 times [2020-10-13 06:23:02,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:02,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936785879] [2020-10-13 06:23:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:06,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:06,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-13 06:23:06,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:06,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4170 [2020-10-13 06:23:06,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:06,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:06,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:23:06,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:23:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:06,861 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:06,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:06,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:06,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:06,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:07,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:07,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:07,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:23:07,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:23:07,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:23:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:07,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:23:07,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:07,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936785879] [2020-10-13 06:23:07,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:07,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:07,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332156793] [2020-10-13 06:23:07,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:07,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:07,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:07,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:07,270 INFO L87 Difference]: Start difference. First operand 1560 states and 1899 transitions. Second operand 7 states. [2020-10-13 06:23:07,519 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:07,879 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:11,244 INFO L93 Difference]: Finished difference Result 4128 states and 5166 transitions. [2020-10-13 06:23:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:11,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 288 [2020-10-13 06:23:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:11,271 INFO L225 Difference]: With dead ends: 4128 [2020-10-13 06:23:11,271 INFO L226 Difference]: Without dead ends: 2677 [2020-10-13 06:23:11,277 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 [2020-10-13 06:23:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2020-10-13 06:23:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2470. [2020-10-13 06:23:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2470 states. [2020-10-13 06:23:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3023 transitions. [2020-10-13 06:23:11,370 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3023 transitions. Word has length 288 [2020-10-13 06:23:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:11,370 INFO L479 AbstractCegarLoop]: Abstraction has 2470 states and 3023 transitions. [2020-10-13 06:23:11,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3023 transitions. [2020-10-13 06:23:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 06:23:11,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:11,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:11,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:23:11,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:11,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1601607134, now seen corresponding path program 1 times [2020-10-13 06:23:11,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:11,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385492439] [2020-10-13 06:23:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-13 06:23:15,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:23:15,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3531 [2020-10-13 06:23:15,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:23:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-13 06:23:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,272 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:15,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:15,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:23:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 06:23:15,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:23:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:23:15,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385492439] [2020-10-13 06:23:15,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:15,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:23:15,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30088520] [2020-10-13 06:23:15,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:23:15,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:15,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:23:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:23:15,748 INFO L87 Difference]: Start difference. First operand 2470 states and 3023 transitions. Second operand 6 states. [2020-10-13 06:23:16,043 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:16,678 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:19,603 INFO L93 Difference]: Finished difference Result 8036 states and 10270 transitions. [2020-10-13 06:23:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:23:19,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2020-10-13 06:23:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:19,633 INFO L225 Difference]: With dead ends: 8036 [2020-10-13 06:23:19,634 INFO L226 Difference]: Without dead ends: 5419 [2020-10-13 06:23:19,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:23:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5419 states. [2020-10-13 06:23:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5419 to 5287. [2020-10-13 06:23:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2020-10-13 06:23:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 6806 transitions. [2020-10-13 06:23:19,804 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 6806 transitions. Word has length 295 [2020-10-13 06:23:19,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:19,805 INFO L479 AbstractCegarLoop]: Abstraction has 5287 states and 6806 transitions. [2020-10-13 06:23:19,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:23:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 6806 transitions. [2020-10-13 06:23:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-13 06:23:19,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:19,824 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, 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] [2020-10-13 06:23:19,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:23:19,824 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:19,825 INFO L82 PathProgramCache]: Analyzing trace with hash -449593010, now seen corresponding path program 1 times [2020-10-13 06:23:19,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:19,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234316601] [2020-10-13 06:23:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 06:23:24,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:24,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4251 [2020-10-13 06:23:24,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:23:24,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-13 06:23:24,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,407 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:24,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:23:24,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:23:24,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 06:23:24,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:23:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:23:24,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234316601] [2020-10-13 06:23:24,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:24,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:23:24,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090447726] [2020-10-13 06:23:24,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:23:24,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:24,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:23:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:23:24,813 INFO L87 Difference]: Start difference. First operand 5287 states and 6806 transitions. Second operand 5 states. [2020-10-13 06:23:25,034 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:27,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:27,840 INFO L93 Difference]: Finished difference Result 13907 states and 18515 transitions. [2020-10-13 06:23:27,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:23:27,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-13 06:23:27,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:27,885 INFO L225 Difference]: With dead ends: 13907 [2020-10-13 06:23:27,886 INFO L226 Difference]: Without dead ends: 8729 [2020-10-13 06:23:27,900 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 [2020-10-13 06:23:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8729 states. [2020-10-13 06:23:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8729 to 8475. [2020-10-13 06:23:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8475 states. [2020-10-13 06:23:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8475 states to 8475 states and 11267 transitions. [2020-10-13 06:23:28,164 INFO L78 Accepts]: Start accepts. Automaton has 8475 states and 11267 transitions. Word has length 301 [2020-10-13 06:23:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:28,165 INFO L479 AbstractCegarLoop]: Abstraction has 8475 states and 11267 transitions. [2020-10-13 06:23:28,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:23:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8475 states and 11267 transitions. [2020-10-13 06:23:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:23:28,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:28,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:28,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:23:28,304 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:28,305 INFO L82 PathProgramCache]: Analyzing trace with hash -573586690, now seen corresponding path program 1 times [2020-10-13 06:23:28,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:28,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935578513] [2020-10-13 06:23:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:32,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:32,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 06:23:32,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4519 [2020-10-13 06:23:32,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:23:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:23:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:33,189 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:33,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:33,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:33,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:33,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:33,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:33,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:23:33,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 06:23:33,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:23:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:33,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:33,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:33,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:23:33,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:23:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:33,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935578513] [2020-10-13 06:23:33,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:33,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:33,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754786591] [2020-10-13 06:23:33,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:33,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:33,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:33,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:33,561 INFO L87 Difference]: Start difference. First operand 8475 states and 11267 transitions. Second operand 7 states. [2020-10-13 06:23:33,721 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:35,351 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:36,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:36,878 INFO L93 Difference]: Finished difference Result 21924 states and 30622 transitions. [2020-10-13 06:23:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:36,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-13 06:23:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:36,951 INFO L225 Difference]: With dead ends: 21924 [2020-10-13 06:23:36,951 INFO L226 Difference]: Without dead ends: 13558 [2020-10-13 06:23:36,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13558 states. [2020-10-13 06:23:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13558 to 13370. [2020-10-13 06:23:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13370 states. [2020-10-13 06:23:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13370 states to 13370 states and 17655 transitions. [2020-10-13 06:23:37,379 INFO L78 Accepts]: Start accepts. Automaton has 13370 states and 17655 transitions. Word has length 311 [2020-10-13 06:23:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:37,380 INFO L479 AbstractCegarLoop]: Abstraction has 13370 states and 17655 transitions. [2020-10-13 06:23:37,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13370 states and 17655 transitions. [2020-10-13 06:23:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 06:23:37,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:37,411 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:37,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:23:37,412 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:37,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:37,412 INFO L82 PathProgramCache]: Analyzing trace with hash 718973629, now seen corresponding path program 1 times [2020-10-13 06:23:37,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:37,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574261825] [2020-10-13 06:23:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 06:23:41,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3958 [2020-10-13 06:23:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 06:23:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-13 06:23:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:41,694 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:41,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:41,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:41,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:41,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:41,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:23:41,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:41,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:23:41,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:41,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:41,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:23:41,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:23:41,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:23:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 06:23:41,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574261825] [2020-10-13 06:23:41,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:41,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:23:41,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768041498] [2020-10-13 06:23:41,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:23:41,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:23:41,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:23:41,978 INFO L87 Difference]: Start difference. First operand 13370 states and 17655 transitions. Second operand 5 states. [2020-10-13 06:23:42,263 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:44,641 INFO L93 Difference]: Finished difference Result 30696 states and 40950 transitions. [2020-10-13 06:23:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:23:44,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-13 06:23:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:44,733 INFO L225 Difference]: With dead ends: 30696 [2020-10-13 06:23:44,733 INFO L226 Difference]: Without dead ends: 17435 [2020-10-13 06:23:44,786 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 [2020-10-13 06:23:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17435 states. [2020-10-13 06:23:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17435 to 17369. [2020-10-13 06:23:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17369 states. [2020-10-13 06:23:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17369 states to 17369 states and 21905 transitions. [2020-10-13 06:23:45,257 INFO L78 Accepts]: Start accepts. Automaton has 17369 states and 21905 transitions. Word has length 323 [2020-10-13 06:23:45,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:45,258 INFO L479 AbstractCegarLoop]: Abstraction has 17369 states and 21905 transitions. [2020-10-13 06:23:45,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:23:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 17369 states and 21905 transitions. [2020-10-13 06:23:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 06:23:45,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:45,294 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:45,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:23:45,295 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:45,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:45,295 INFO L82 PathProgramCache]: Analyzing trace with hash 41754829, now seen corresponding path program 1 times [2020-10-13 06:23:45,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:45,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178744765] [2020-10-13 06:23:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:23:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:50,674 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:50,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:50,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:50,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:23:50,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:51,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:51,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:23:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 06:23:51,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:23:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:51,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:51,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:51,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:23:51,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 06:23:51,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:23:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:51,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178744765] [2020-10-13 06:23:51,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:51,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:51,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90540100] [2020-10-13 06:23:51,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:51,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:51,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:51,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:51,386 INFO L87 Difference]: Start difference. First operand 17369 states and 21905 transitions. Second operand 7 states. [2020-10-13 06:23:51,766 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:52,813 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:54,940 INFO L93 Difference]: Finished difference Result 41778 states and 54532 transitions. [2020-10-13 06:23:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:54,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-13 06:23:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:55,023 INFO L225 Difference]: With dead ends: 41778 [2020-10-13 06:23:55,023 INFO L226 Difference]: Without dead ends: 24552 [2020-10-13 06:23:55,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24552 states. [2020-10-13 06:23:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24552 to 24380. [2020-10-13 06:23:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24380 states. [2020-10-13 06:23:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24380 states to 24380 states and 31063 transitions. [2020-10-13 06:23:55,687 INFO L78 Accepts]: Start accepts. Automaton has 24380 states and 31063 transitions. Word has length 331 [2020-10-13 06:23:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:55,688 INFO L479 AbstractCegarLoop]: Abstraction has 24380 states and 31063 transitions. [2020-10-13 06:23:55,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 24380 states and 31063 transitions. [2020-10-13 06:23:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-13 06:23:55,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:55,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:55,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:23:55,733 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:55,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:55,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1948295751, now seen corresponding path program 1 times [2020-10-13 06:23:55,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:55,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191081695] [2020-10-13 06:23:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:56,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:58,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:00,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 06:24:00,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:24:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:24:00,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:24:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 06:24:00,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,122 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:01,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:01,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:24:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:01,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:24:01,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 06:24:01,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:24:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:24:01,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191081695] [2020-10-13 06:24:01,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:01,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:24:01,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524027488] [2020-10-13 06:24:01,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:24:01,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:24:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:24:01,494 INFO L87 Difference]: Start difference. First operand 24380 states and 31063 transitions. Second operand 5 states. [2020-10-13 06:24:02,032 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:04,057 INFO L93 Difference]: Finished difference Result 50986 states and 65839 transitions. [2020-10-13 06:24:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:24:04,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-13 06:24:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:04,147 INFO L225 Difference]: With dead ends: 50986 [2020-10-13 06:24:04,148 INFO L226 Difference]: Without dead ends: 26956 [2020-10-13 06:24:04,190 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 [2020-10-13 06:24:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26956 states. [2020-10-13 06:24:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26956 to 26866. [2020-10-13 06:24:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26866 states. [2020-10-13 06:24:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26866 states to 26866 states and 34573 transitions. [2020-10-13 06:24:04,876 INFO L78 Accepts]: Start accepts. Automaton has 26866 states and 34573 transitions. Word has length 333 [2020-10-13 06:24:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:04,876 INFO L479 AbstractCegarLoop]: Abstraction has 26866 states and 34573 transitions. [2020-10-13 06:24:04,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:24:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 26866 states and 34573 transitions. [2020-10-13 06:24:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-13 06:24:04,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:04,920 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:24:04,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:24:04,920 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash 335744125, now seen corresponding path program 1 times [2020-10-13 06:24:04,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:04,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198183721] [2020-10-13 06:24:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:08,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 06:24:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,251 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:10,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:10,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:24:10,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:24:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:10,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:24:10,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 06:24:10,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 06:24:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:10,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:24:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:11,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:11,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:24:11,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 06:24:11,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:24:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 139 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 06:24:11,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198183721] [2020-10-13 06:24:11,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:11,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:11,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407271692] [2020-10-13 06:24:11,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:24:11,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:11,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:24:11,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:24:11,762 INFO L87 Difference]: Start difference. First operand 26866 states and 34573 transitions. Second operand 8 states. [2020-10-13 06:24:11,911 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:12,691 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:24:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:15,448 INFO L93 Difference]: Finished difference Result 57420 states and 79402 transitions. [2020-10-13 06:24:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:24:15,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 339 [2020-10-13 06:24:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:15,585 INFO L225 Difference]: With dead ends: 57420 [2020-10-13 06:24:15,585 INFO L226 Difference]: Without dead ends: 30904 [2020-10-13 06:24:15,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:24:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30904 states. [2020-10-13 06:24:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30904 to 30018. [2020-10-13 06:24:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30018 states. [2020-10-13 06:24:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30018 states to 30018 states and 38200 transitions. [2020-10-13 06:24:16,546 INFO L78 Accepts]: Start accepts. Automaton has 30018 states and 38200 transitions. Word has length 339 [2020-10-13 06:24:16,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:16,547 INFO L479 AbstractCegarLoop]: Abstraction has 30018 states and 38200 transitions. [2020-10-13 06:24:16,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:24:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 30018 states and 38200 transitions. [2020-10-13 06:24:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-13 06:24:16,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:16,612 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:16,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:24:16,613 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:16,613 INFO L82 PathProgramCache]: Analyzing trace with hash 614464214, now seen corresponding path program 1 times [2020-10-13 06:24:16,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:16,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312001298] [2020-10-13 06:24:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:16,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-13 06:24:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 06:24:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:24:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:24:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,846 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:21,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:24:22,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 06:24:22,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:24:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:24:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:24:22,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:24:22,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:24:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:22,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:24:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 06:24:22,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312001298] [2020-10-13 06:24:22,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:22,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:22,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153096664] [2020-10-13 06:24:22,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:22,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:22,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:22,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:22,237 INFO L87 Difference]: Start difference. First operand 30018 states and 38200 transitions. Second operand 7 states. [2020-10-13 06:24:22,371 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:24:23,313 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:25,451 INFO L93 Difference]: Finished difference Result 75663 states and 97871 transitions. [2020-10-13 06:24:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:25,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-13 06:24:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:25,593 INFO L225 Difference]: With dead ends: 75663 [2020-10-13 06:24:25,593 INFO L226 Difference]: Without dead ends: 45995 [2020-10-13 06:24:25,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:25,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45995 states. [2020-10-13 06:24:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45995 to 45911. [2020-10-13 06:24:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45911 states. [2020-10-13 06:24:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45911 states to 45911 states and 57068 transitions. [2020-10-13 06:24:26,535 INFO L78 Accepts]: Start accepts. Automaton has 45911 states and 57068 transitions. Word has length 341 [2020-10-13 06:24:26,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:26,535 INFO L479 AbstractCegarLoop]: Abstraction has 45911 states and 57068 transitions. [2020-10-13 06:24:26,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 45911 states and 57068 transitions. [2020-10-13 06:24:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-13 06:24:26,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:26,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:26,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:24:26,583 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:26,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:26,584 INFO L82 PathProgramCache]: Analyzing trace with hash -362065580, now seen corresponding path program 1 times [2020-10-13 06:24:26,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:26,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339899757] [2020-10-13 06:24:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:26,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:31,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:31,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-13 06:24:31,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:24:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 06:24:31,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:24:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:24:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:31,899 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:31,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:31,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:31,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:24:32,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 06:24:32,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:24:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:24:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:24:32,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:24:32,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:24:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 06:24:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:24:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:32,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 184 proven. 26 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-13 06:24:32,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339899757] [2020-10-13 06:24:32,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:32,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:32,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102907998] [2020-10-13 06:24:32,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:32,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:32,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:32,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:32,319 INFO L87 Difference]: Start difference. First operand 45911 states and 57068 transitions. Second operand 7 states. [2020-10-13 06:24:32,631 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:33,274 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:36,416 INFO L93 Difference]: Finished difference Result 115751 states and 146852 transitions. [2020-10-13 06:24:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:36,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-13 06:24:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:36,658 INFO L225 Difference]: With dead ends: 115751 [2020-10-13 06:24:36,659 INFO L226 Difference]: Without dead ends: 73701 [2020-10-13 06:24:36,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73701 states. [2020-10-13 06:24:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73701 to 73047. [2020-10-13 06:24:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73047 states. [2020-10-13 06:24:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73047 states to 73047 states and 91118 transitions. [2020-10-13 06:24:40,267 INFO L78 Accepts]: Start accepts. Automaton has 73047 states and 91118 transitions. Word has length 360 [2020-10-13 06:24:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:40,267 INFO L479 AbstractCegarLoop]: Abstraction has 73047 states and 91118 transitions. [2020-10-13 06:24:40,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 73047 states and 91118 transitions. [2020-10-13 06:24:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-13 06:24:40,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:40,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:40,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:24:40,317 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1303321960, now seen corresponding path program 1 times [2020-10-13 06:24:40,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:40,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956121103] [2020-10-13 06:24:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:45,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 06:24:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:45,571 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:45,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:45,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:45,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:24:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 06:24:45,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:24:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:24:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:45,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:45,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:24:45,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:45,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:24:45,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 06:24:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 06:24:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:45,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:45,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:24:45,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:24:45,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 06:24:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 190 proven. 30 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 06:24:46,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956121103] [2020-10-13 06:24:46,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:46,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:46,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30214920] [2020-10-13 06:24:46,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:46,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:46,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:46,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:46,072 INFO L87 Difference]: Start difference. First operand 73047 states and 91118 transitions. Second operand 7 states. [2020-10-13 06:24:46,455 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:47,365 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:50,150 INFO L93 Difference]: Finished difference Result 173592 states and 232064 transitions. [2020-10-13 06:24:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:24:50,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-13 06:24:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:50,519 INFO L225 Difference]: With dead ends: 173592 [2020-10-13 06:24:50,520 INFO L226 Difference]: Without dead ends: 100895 [2020-10-13 06:24:50,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:24:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100895 states. [2020-10-13 06:24:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100895 to 96931. [2020-10-13 06:24:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96931 states. [2020-10-13 06:24:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96931 states to 96931 states and 119876 transitions. [2020-10-13 06:24:53,097 INFO L78 Accepts]: Start accepts. Automaton has 96931 states and 119876 transitions. Word has length 362 [2020-10-13 06:24:53,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:53,097 INFO L479 AbstractCegarLoop]: Abstraction has 96931 states and 119876 transitions. [2020-10-13 06:24:53,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:53,097 INFO L276 IsEmpty]: Start isEmpty. Operand 96931 states and 119876 transitions. [2020-10-13 06:24:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-13 06:24:53,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:53,142 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:53,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:24:53,142 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:53,143 INFO L82 PathProgramCache]: Analyzing trace with hash 69817207, now seen corresponding path program 1 times [2020-10-13 06:24:53,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:53,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450701247] [2020-10-13 06:24:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:53,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-13 06:24:57,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:24:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3910 [2020-10-13 06:24:57,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:24:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 06:24:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,320 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:24:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:24:57,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 06:24:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:24:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:24:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:57,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 06:24:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 06:24:57,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 06:24:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:24:57,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450701247] [2020-10-13 06:24:57,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:57,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:57,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841762770] [2020-10-13 06:24:57,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:57,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:57,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:57,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:57,863 INFO L87 Difference]: Start difference. First operand 96931 states and 119876 transitions. Second operand 7 states. [2020-10-13 06:24:57,996 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:58,994 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:25:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:01,906 INFO L93 Difference]: Finished difference Result 198891 states and 248301 transitions. [2020-10-13 06:25:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:25:01,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-13 06:25:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:02,132 INFO L225 Difference]: With dead ends: 198891 [2020-10-13 06:25:02,133 INFO L226 Difference]: Without dead ends: 104329 [2020-10-13 06:25:02,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104329 states. [2020-10-13 06:25:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104329 to 102529. [2020-10-13 06:25:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102529 states. [2020-10-13 06:25:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102529 states to 102529 states and 125364 transitions. [2020-10-13 06:25:03,742 INFO L78 Accepts]: Start accepts. Automaton has 102529 states and 125364 transitions. Word has length 368 [2020-10-13 06:25:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:03,742 INFO L479 AbstractCegarLoop]: Abstraction has 102529 states and 125364 transitions. [2020-10-13 06:25:03,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:25:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 102529 states and 125364 transitions. [2020-10-13 06:25:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-13 06:25:03,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:03,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:25:03,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:25:03,802 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash 715408662, now seen corresponding path program 1 times [2020-10-13 06:25:03,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:03,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559138913] [2020-10-13 06:25:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:07,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4808 [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 06:25:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:08,871 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:08,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:08,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:08,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:25:08,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:08,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:08,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:08,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:25:08,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:08,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:25:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:09,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:09,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:25:09,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 06:25:09,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:25:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:25:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:09,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:09,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:09,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:25:09,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 06:25:09,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:09,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 06:25:09,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:25:09,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559138913] [2020-10-13 06:25:09,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:09,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:25:09,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447865992] [2020-10-13 06:25:09,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:25:09,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:09,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:25:09,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:25:09,454 INFO L87 Difference]: Start difference. First operand 102529 states and 125364 transitions. Second operand 7 states. [2020-10-13 06:25:10,050 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:25:10,666 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:25:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:14,003 INFO L93 Difference]: Finished difference Result 212244 states and 260217 transitions. [2020-10-13 06:25:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:25:14,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-13 06:25:14,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted.