/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/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:56:30,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:56:30,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:56:30,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:56:30,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:56:30,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:56:30,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:56:30,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:56:30,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:56:30,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:56:30,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:56:30,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:56:30,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:56:30,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:56:30,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:56:30,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:56:30,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:56:30,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:56:30,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:56:30,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:56:30,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:56:30,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:56:30,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:56:30,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:56:30,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:56:30,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:56:30,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:56:30,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:56:30,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:56:30,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:56:30,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:56:30,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:56:30,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:56:30,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:56:30,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:56:30,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:56:30,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:56:30,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:56:30,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:56:30,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:56:30,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:56:30,288 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 14:56:30,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:56:30,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:56:30,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:56:30,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:56:30,334 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:56:30,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:56:30,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:56:30,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:56:30,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:56:30,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:56:30,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:56:30,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:56:30,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:56:30,337 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:56:30,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:56:30,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:56:30,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:56:30,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:56:30,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:56:30,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:56:30,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:56:30,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:56:30,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:56:30,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:56:30,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:56:30,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:56:30,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:56:30,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:56:30,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:56:30,340 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 14:56:30,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:56:30,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:56:30,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:56:30,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:56:30,636 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:56:30,636 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:56:30,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b1be3a6c/86db4c24f45f4c1da350311ef312ad77/FLAGfcef1e784 [2020-10-13 14:56:31,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:56:31,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:56:31,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b1be3a6c/86db4c24f45f4c1da350311ef312ad77/FLAGfcef1e784 [2020-10-13 14:56:31,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b1be3a6c/86db4c24f45f4c1da350311ef312ad77 [2020-10-13 14:56:31,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:56:31,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:56:31,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:56:31,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:56:31,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:56:31,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:56:31" (1/1) ... [2020-10-13 14:56:31,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9731bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:31, skipping insertion in model container [2020-10-13 14:56:31,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:56:31" (1/1) ... [2020-10-13 14:56:31,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:56:31,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:56:32,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:56:32,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:56:32,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:56:32,868 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:56:32,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32 WrapperNode [2020-10-13 14:56:32,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:56:32,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:56:32,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:56:32,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:56:32,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (1/1) ... [2020-10-13 14:56:32,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (1/1) ... [2020-10-13 14:56:32,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (1/1) ... [2020-10-13 14:56:32,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (1/1) ... [2020-10-13 14:56:32,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (1/1) ... [2020-10-13 14:56:32,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (1/1) ... [2020-10-13 14:56:32,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (1/1) ... [2020-10-13 14:56:32,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:56:32,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:56:32,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:56:32,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:56:32,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (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 14:56:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:56:33,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:56:33,073 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:56:33,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:56:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:56:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:56:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:56:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:56:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:56:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:56:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:56:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:56:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:56:33,076 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:56:33,076 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:56:33,076 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:56:33,076 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:56:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:56:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:56:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:56:35,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:56:35,160 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:56:35,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:56:35 BoogieIcfgContainer [2020-10-13 14:56:35,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:56:35,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:56:35,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:56:35,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:56:35,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:56:31" (1/3) ... [2020-10-13 14:56:35,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0e55b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:56:35, skipping insertion in model container [2020-10-13 14:56:35,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:56:32" (2/3) ... [2020-10-13 14:56:35,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0e55b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:56:35, skipping insertion in model container [2020-10-13 14:56:35,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:56:35" (3/3) ... [2020-10-13 14:56:35,183 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:56:35,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:56:35,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 14:56:35,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 14:56:35,261 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:56:35,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:56:35,262 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:56:35,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:56:35,262 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:56:35,262 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:56:35,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:56:35,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:56:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states. [2020-10-13 14:56:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:56:35,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:35,315 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] [2020-10-13 14:56:35,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:35,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:35,322 INFO L82 PathProgramCache]: Analyzing trace with hash -635063315, now seen corresponding path program 1 times [2020-10-13 14:56:35,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:35,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494959883] [2020-10-13 14:56:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:36,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:37,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:40,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:40,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 14:56:40,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:56:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 14:56:40,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:40,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:56:40,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:56:40,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:56:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:56:41,482 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:56:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:56:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:41,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:41,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:56:41,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:56:41,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:56:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:56:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:56:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:56:41,627 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 14:56:41,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494959883] [2020-10-13 14:56:41,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:56:41,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:56:41,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378472996] [2020-10-13 14:56:41,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:56:41,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:56:41,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:56:41,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:56:41,670 INFO L87 Difference]: Start difference. First operand 418 states. Second operand 5 states. [2020-10-13 14:56:46,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:56:46,175 INFO L93 Difference]: Finished difference Result 1212 states and 2155 transitions. [2020-10-13 14:56:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:56:46,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 14:56:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:56:46,223 INFO L225 Difference]: With dead ends: 1212 [2020-10-13 14:56:46,226 INFO L226 Difference]: Without dead ends: 799 [2020-10-13 14:56:46,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:56:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-10-13 14:56:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 773. [2020-10-13 14:56:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-13 14:56:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1109 transitions. [2020-10-13 14:56:46,377 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1109 transitions. Word has length 152 [2020-10-13 14:56:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:56:46,377 INFO L479 AbstractCegarLoop]: Abstraction has 773 states and 1109 transitions. [2020-10-13 14:56:46,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:56:46,378 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1109 transitions. [2020-10-13 14:56:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 14:56:46,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:46,384 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] [2020-10-13 14:56:46,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:56:46,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:46,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:46,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1458550469, now seen corresponding path program 1 times [2020-10-13 14:56:46,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:46,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633190773] [2020-10-13 14:56:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:51,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:51,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 14:56:51,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:56:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 14:56:51,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:56:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:56:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:56:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:51,744 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:56:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:56:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:51,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:56:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:56:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:56:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:56:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:56:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:51,845 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 14:56:51,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633190773] [2020-10-13 14:56:51,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:56:51,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:56:51,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091674650] [2020-10-13 14:56:51,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:56:51,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:56:51,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:56:51,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:56:51,851 INFO L87 Difference]: Start difference. First operand 773 states and 1109 transitions. Second operand 4 states. [2020-10-13 14:56:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:56:55,242 INFO L93 Difference]: Finished difference Result 2273 states and 3257 transitions. [2020-10-13 14:56:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:56:55,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-13 14:56:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:56:55,252 INFO L225 Difference]: With dead ends: 2273 [2020-10-13 14:56:55,253 INFO L226 Difference]: Without dead ends: 1532 [2020-10-13 14:56:55,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:56:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-10-13 14:56:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 775. [2020-10-13 14:56:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-10-13 14:56:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1111 transitions. [2020-10-13 14:56:55,312 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1111 transitions. Word has length 153 [2020-10-13 14:56:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:56:55,312 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1111 transitions. [2020-10-13 14:56:55,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:56:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1111 transitions. [2020-10-13 14:56:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 14:56:55,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:55,317 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] [2020-10-13 14:56:55,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:56:55,318 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash -827989227, now seen corresponding path program 1 times [2020-10-13 14:56:55,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:55,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673810531] [2020-10-13 14:56:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:55,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:55,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:56,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:00,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:00,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 14:57:00,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:57:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 14:57:00,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:57:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:57:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:00,868 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:57:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:00,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:00,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:00,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:57:00,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:57:01,005 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 14:57:01,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673810531] [2020-10-13 14:57:01,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:01,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:01,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812368315] [2020-10-13 14:57:01,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:01,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:01,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:01,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:01,009 INFO L87 Difference]: Start difference. First operand 775 states and 1111 transitions. Second operand 5 states. [2020-10-13 14:57:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:05,004 INFO L93 Difference]: Finished difference Result 2234 states and 3189 transitions. [2020-10-13 14:57:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:05,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-13 14:57:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:05,013 INFO L225 Difference]: With dead ends: 2234 [2020-10-13 14:57:05,013 INFO L226 Difference]: Without dead ends: 1493 [2020-10-13 14:57:05,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2020-10-13 14:57:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1470. [2020-10-13 14:57:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-10-13 14:57:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2091 transitions. [2020-10-13 14:57:05,112 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2091 transitions. Word has length 154 [2020-10-13 14:57:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:05,113 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 2091 transitions. [2020-10-13 14:57:05,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2091 transitions. [2020-10-13 14:57:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 14:57:05,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:05,120 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] [2020-10-13 14:57:05,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:57:05,120 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:05,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1724436654, now seen corresponding path program 1 times [2020-10-13 14:57:05,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:05,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419357044] [2020-10-13 14:57:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:07,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:10,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 14:57:10,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:57:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:57:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:57:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:57:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:57:10,608 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:57:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:10,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:10,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:10,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:10,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:57:10,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:10,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:10,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:57:10,701 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 14:57:10,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419357044] [2020-10-13 14:57:10,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:10,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:10,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747983693] [2020-10-13 14:57:10,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:10,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:10,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:10,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:10,706 INFO L87 Difference]: Start difference. First operand 1470 states and 2091 transitions. Second operand 5 states. [2020-10-13 14:57:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:13,069 INFO L93 Difference]: Finished difference Result 2584 states and 3669 transitions. [2020-10-13 14:57:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:13,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-13 14:57:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:13,076 INFO L225 Difference]: With dead ends: 2584 [2020-10-13 14:57:13,077 INFO L226 Difference]: Without dead ends: 1134 [2020-10-13 14:57:13,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-10-13 14:57:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1133. [2020-10-13 14:57:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-13 14:57:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1602 transitions. [2020-10-13 14:57:13,146 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1602 transitions. Word has length 154 [2020-10-13 14:57:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:13,147 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1602 transitions. [2020-10-13 14:57:13,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1602 transitions. [2020-10-13 14:57:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:57:13,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:13,150 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] [2020-10-13 14:57:13,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:57:13,151 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1859501905, now seen corresponding path program 1 times [2020-10-13 14:57:13,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:13,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188383152] [2020-10-13 14:57:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:13,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:18,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:57:18,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:57:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:57:18,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:57:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 14:57:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 14:57:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:18,427 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:57:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:18,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:18,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:18,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:57:18,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:18,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:18,486 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 14:57:18,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188383152] [2020-10-13 14:57:18,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:18,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:57:18,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48591427] [2020-10-13 14:57:18,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:57:18,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:18,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:57:18,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:18,489 INFO L87 Difference]: Start difference. First operand 1133 states and 1602 transitions. Second operand 4 states. [2020-10-13 14:57:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:21,274 INFO L93 Difference]: Finished difference Result 2454 states and 3559 transitions. [2020-10-13 14:57:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:57:21,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-13 14:57:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:21,284 INFO L225 Difference]: With dead ends: 2454 [2020-10-13 14:57:21,284 INFO L226 Difference]: Without dead ends: 1512 [2020-10-13 14:57:21,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:21,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2020-10-13 14:57:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1348. [2020-10-13 14:57:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-10-13 14:57:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1951 transitions. [2020-10-13 14:57:21,365 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1951 transitions. Word has length 158 [2020-10-13 14:57:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:21,366 INFO L479 AbstractCegarLoop]: Abstraction has 1348 states and 1951 transitions. [2020-10-13 14:57:21,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:57:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1951 transitions. [2020-10-13 14:57:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 14:57:21,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:21,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:57:21,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:57:21,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:21,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:21,371 INFO L82 PathProgramCache]: Analyzing trace with hash 567488640, now seen corresponding path program 1 times [2020-10-13 14:57:21,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:21,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802332392] [2020-10-13 14:57:21,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 14:57:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:57:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:57:26,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:57:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 14:57:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:26,725 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:57:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:26,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:57:26,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:26,796 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 14:57:26,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802332392] [2020-10-13 14:57:26,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:26,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:26,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106920399] [2020-10-13 14:57:26,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:26,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:26,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:26,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:26,799 INFO L87 Difference]: Start difference. First operand 1348 states and 1951 transitions. Second operand 5 states. [2020-10-13 14:57:30,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:30,263 INFO L93 Difference]: Finished difference Result 3886 states and 5605 transitions. [2020-10-13 14:57:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:30,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 14:57:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:30,274 INFO L225 Difference]: With dead ends: 3886 [2020-10-13 14:57:30,275 INFO L226 Difference]: Without dead ends: 2593 [2020-10-13 14:57:30,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2020-10-13 14:57:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2565. [2020-10-13 14:57:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2565 states. [2020-10-13 14:57:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3687 transitions. [2020-10-13 14:57:30,456 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3687 transitions. Word has length 161 [2020-10-13 14:57:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:30,457 INFO L479 AbstractCegarLoop]: Abstraction has 2565 states and 3687 transitions. [2020-10-13 14:57:30,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3687 transitions. [2020-10-13 14:57:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 14:57:30,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:30,464 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] [2020-10-13 14:57:30,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:57:30,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:30,465 INFO L82 PathProgramCache]: Analyzing trace with hash 548532214, now seen corresponding path program 1 times [2020-10-13 14:57:30,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:30,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383201884] [2020-10-13 14:57:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:30,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:30,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:30,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:32,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:32,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:32,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:35,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:57:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:35,800 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:57:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:35,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:35,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:35,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:57:35,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:57:35,856 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 14:57:35,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383201884] [2020-10-13 14:57:35,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:35,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:57:35,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780124518] [2020-10-13 14:57:35,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:57:35,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:35,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:57:35,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:35,863 INFO L87 Difference]: Start difference. First operand 2565 states and 3687 transitions. Second operand 4 states. [2020-10-13 14:57:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:38,398 INFO L93 Difference]: Finished difference Result 7585 states and 10894 transitions. [2020-10-13 14:57:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:57:38,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-13 14:57:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:38,420 INFO L225 Difference]: With dead ends: 7585 [2020-10-13 14:57:38,421 INFO L226 Difference]: Without dead ends: 5084 [2020-10-13 14:57:38,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-10-13 14:57:38,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 2571. [2020-10-13 14:57:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2571 states. [2020-10-13 14:57:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3693 transitions. [2020-10-13 14:57:38,612 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3693 transitions. Word has length 162 [2020-10-13 14:57:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:38,612 INFO L479 AbstractCegarLoop]: Abstraction has 2571 states and 3693 transitions. [2020-10-13 14:57:38,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:57:38,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3693 transitions. [2020-10-13 14:57:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 14:57:38,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:38,617 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] [2020-10-13 14:57:38,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:57:38,618 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash -759866913, now seen corresponding path program 1 times [2020-10-13 14:57:38,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:38,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658951805] [2020-10-13 14:57:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:38,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:43,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:43,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 14:57:43,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:57:43,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:57:43,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:57:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:57:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:57:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:43,971 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:57:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:43,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:43,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:43,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:57:43,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:44,027 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 14:57:44,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658951805] [2020-10-13 14:57:44,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:44,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:57:44,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470481635] [2020-10-13 14:57:44,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:57:44,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:44,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:57:44,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:57:44,030 INFO L87 Difference]: Start difference. First operand 2571 states and 3693 transitions. Second operand 5 states. [2020-10-13 14:57:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:45,802 INFO L93 Difference]: Finished difference Result 5084 states and 7301 transitions. [2020-10-13 14:57:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:57:45,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 14:57:45,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:45,813 INFO L225 Difference]: With dead ends: 5084 [2020-10-13 14:57:45,813 INFO L226 Difference]: Without dead ends: 2571 [2020-10-13 14:57:45,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:57:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2020-10-13 14:57:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2564. [2020-10-13 14:57:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2564 states. [2020-10-13 14:57:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 3679 transitions. [2020-10-13 14:57:45,969 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 3679 transitions. Word has length 163 [2020-10-13 14:57:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:45,971 INFO L479 AbstractCegarLoop]: Abstraction has 2564 states and 3679 transitions. [2020-10-13 14:57:45,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:57:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 3679 transitions. [2020-10-13 14:57:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 14:57:45,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:45,976 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] [2020-10-13 14:57:45,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:57:45,977 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash -402032524, now seen corresponding path program 1 times [2020-10-13 14:57:45,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:45,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205908005] [2020-10-13 14:57:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:46,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:47,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:48,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:49,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:51,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 14:57:51,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:57:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:57:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:57:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:57:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:57:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:51,294 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:57:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:57:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:51,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:57:51,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:57:51,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:57:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:57:51,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:57:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:57:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:57:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:57:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:57:51,340 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 14:57:51,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205908005] [2020-10-13 14:57:51,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:57:51,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:57:51,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436118832] [2020-10-13 14:57:51,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:57:51,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:57:51,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:57:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:51,342 INFO L87 Difference]: Start difference. First operand 2564 states and 3679 transitions. Second operand 4 states. [2020-10-13 14:57:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:57:54,787 INFO L93 Difference]: Finished difference Result 7019 states and 10126 transitions. [2020-10-13 14:57:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:57:54,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-13 14:57:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:57:54,803 INFO L225 Difference]: With dead ends: 7019 [2020-10-13 14:57:54,804 INFO L226 Difference]: Without dead ends: 4945 [2020-10-13 14:57:54,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:57:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2020-10-13 14:57:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4917. [2020-10-13 14:57:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4917 states. [2020-10-13 14:57:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 6996 transitions. [2020-10-13 14:57:55,119 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 6996 transitions. Word has length 163 [2020-10-13 14:57:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:57:55,120 INFO L479 AbstractCegarLoop]: Abstraction has 4917 states and 6996 transitions. [2020-10-13 14:57:55,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:57:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 6996 transitions. [2020-10-13 14:57:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 14:57:55,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:57:55,128 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] [2020-10-13 14:57:55,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:57:55,128 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:57:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:57:55,128 INFO L82 PathProgramCache]: Analyzing trace with hash 176761079, now seen corresponding path program 1 times [2020-10-13 14:57:55,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:57:55,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328289931] [2020-10-13 14:57:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:57:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:57:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:57:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:00,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:00,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 14:58:00,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:58:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:58:00,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:00,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:00,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:58:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:58:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:00,506 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:00,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:00,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:58:00,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:00,550 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 14:58:00,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328289931] [2020-10-13 14:58:00,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:00,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:00,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435240761] [2020-10-13 14:58:00,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:00,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:00,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:00,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:00,552 INFO L87 Difference]: Start difference. First operand 4917 states and 6996 transitions. Second operand 5 states. [2020-10-13 14:58:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:02,957 INFO L93 Difference]: Finished difference Result 12343 states and 17508 transitions. [2020-10-13 14:58:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:58:02,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 14:58:02,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:02,988 INFO L225 Difference]: With dead ends: 12343 [2020-10-13 14:58:02,989 INFO L226 Difference]: Without dead ends: 7552 [2020-10-13 14:58:02,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2020-10-13 14:58:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 4945. [2020-10-13 14:58:03,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4945 states. [2020-10-13 14:58:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 7024 transitions. [2020-10-13 14:58:03,264 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 7024 transitions. Word has length 163 [2020-10-13 14:58:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:03,265 INFO L479 AbstractCegarLoop]: Abstraction has 4945 states and 7024 transitions. [2020-10-13 14:58:03,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:58:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 7024 transitions. [2020-10-13 14:58:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 14:58:03,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:03,273 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] [2020-10-13 14:58:03,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:58:03,273 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:03,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2067007325, now seen corresponding path program 1 times [2020-10-13 14:58:03,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:03,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771469889] [2020-10-13 14:58:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:08,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 14:58:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:58:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:58:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:58:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:58:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:58:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:08,550 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:08,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:08,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:08,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:58:08,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:08,584 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 14:58:08,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771469889] [2020-10-13 14:58:08,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:08,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:58:08,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928008557] [2020-10-13 14:58:08,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:58:08,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:08,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:58:08,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:08,586 INFO L87 Difference]: Start difference. First operand 4945 states and 7024 transitions. Second operand 4 states. [2020-10-13 14:58:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:12,062 INFO L93 Difference]: Finished difference Result 14449 states and 20536 transitions. [2020-10-13 14:58:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:58:12,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-13 14:58:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:12,083 INFO L225 Difference]: With dead ends: 14449 [2020-10-13 14:58:12,084 INFO L226 Difference]: Without dead ends: 9731 [2020-10-13 14:58:12,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9731 states. [2020-10-13 14:58:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9731 to 4967. [2020-10-13 14:58:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4967 states. [2020-10-13 14:58:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 7046 transitions. [2020-10-13 14:58:12,403 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 7046 transitions. Word has length 164 [2020-10-13 14:58:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:12,403 INFO L479 AbstractCegarLoop]: Abstraction has 4967 states and 7046 transitions. [2020-10-13 14:58:12,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:58:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 7046 transitions. [2020-10-13 14:58:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 14:58:12,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:12,410 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] [2020-10-13 14:58:12,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:58:12,410 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:12,411 INFO L82 PathProgramCache]: Analyzing trace with hash 364996978, now seen corresponding path program 1 times [2020-10-13 14:58:12,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:12,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301069324] [2020-10-13 14:58:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:17,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:17,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 14:58:17,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:58:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:58:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:58:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 14:58:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:58:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:17,730 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:17,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:17,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:17,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:17,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:17,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:58:17,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:17,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:17,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:17,773 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 14:58:17,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301069324] [2020-10-13 14:58:17,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:17,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:58:17,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582377706] [2020-10-13 14:58:17,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:58:17,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:17,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:58:17,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:17,775 INFO L87 Difference]: Start difference. First operand 4967 states and 7046 transitions. Second operand 4 states. [2020-10-13 14:58:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:20,335 INFO L93 Difference]: Finished difference Result 11141 states and 16299 transitions. [2020-10-13 14:58:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:58:20,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-13 14:58:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:20,349 INFO L225 Difference]: With dead ends: 11141 [2020-10-13 14:58:20,350 INFO L226 Difference]: Without dead ends: 7015 [2020-10-13 14:58:20,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:20,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7015 states. [2020-10-13 14:58:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7015 to 6375. [2020-10-13 14:58:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6375 states. [2020-10-13 14:58:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 9310 transitions. [2020-10-13 14:58:20,750 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 9310 transitions. Word has length 165 [2020-10-13 14:58:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:20,751 INFO L479 AbstractCegarLoop]: Abstraction has 6375 states and 9310 transitions. [2020-10-13 14:58:20,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:58:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 9310 transitions. [2020-10-13 14:58:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 14:58:20,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:20,756 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] [2020-10-13 14:58:20,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:58:20,757 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:20,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1547974614, now seen corresponding path program 1 times [2020-10-13 14:58:20,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:20,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481041848] [2020-10-13 14:58:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:25,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 14:58:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:58:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:58:25,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:58:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:58:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:26,088 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:58:26,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:26,135 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 14:58:26,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481041848] [2020-10-13 14:58:26,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:26,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:26,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306730205] [2020-10-13 14:58:26,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:26,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:26,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:26,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:26,138 INFO L87 Difference]: Start difference. First operand 6375 states and 9310 transitions. Second operand 5 states. [2020-10-13 14:58:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:28,112 INFO L93 Difference]: Finished difference Result 12547 states and 18338 transitions. [2020-10-13 14:58:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:58:28,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-13 14:58:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:28,129 INFO L225 Difference]: With dead ends: 12547 [2020-10-13 14:58:28,129 INFO L226 Difference]: Without dead ends: 6341 [2020-10-13 14:58:28,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:58:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6341 states. [2020-10-13 14:58:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6341 to 6335. [2020-10-13 14:58:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6335 states. [2020-10-13 14:58:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6335 states to 6335 states and 9236 transitions. [2020-10-13 14:58:28,574 INFO L78 Accepts]: Start accepts. Automaton has 6335 states and 9236 transitions. Word has length 165 [2020-10-13 14:58:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:28,575 INFO L479 AbstractCegarLoop]: Abstraction has 6335 states and 9236 transitions. [2020-10-13 14:58:28,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:58:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6335 states and 9236 transitions. [2020-10-13 14:58:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 14:58:28,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:28,578 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] [2020-10-13 14:58:28,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:58:28,579 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1931771722, now seen corresponding path program 1 times [2020-10-13 14:58:28,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:28,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888998672] [2020-10-13 14:58:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:33,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:33,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 14:58:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:58:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:58:33,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 14:58:33,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:58:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:33,951 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:33,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:33,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:33,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:58:33,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:33,988 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 14:58:33,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888998672] [2020-10-13 14:58:33,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:33,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:33,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949399673] [2020-10-13 14:58:33,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:33,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:33,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:33,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:33,990 INFO L87 Difference]: Start difference. First operand 6335 states and 9236 transitions. Second operand 5 states. [2020-10-13 14:58:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:35,866 INFO L93 Difference]: Finished difference Result 10778 states and 15828 transitions. [2020-10-13 14:58:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:58:35,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-13 14:58:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:35,872 INFO L225 Difference]: With dead ends: 10778 [2020-10-13 14:58:35,872 INFO L226 Difference]: Without dead ends: 4880 [2020-10-13 14:58:35,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:58:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2020-10-13 14:58:36,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4866. [2020-10-13 14:58:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4866 states. [2020-10-13 14:58:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 7074 transitions. [2020-10-13 14:58:36,277 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 7074 transitions. Word has length 165 [2020-10-13 14:58:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:36,277 INFO L479 AbstractCegarLoop]: Abstraction has 4866 states and 7074 transitions. [2020-10-13 14:58:36,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:58:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 7074 transitions. [2020-10-13 14:58:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 14:58:36,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:36,280 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] [2020-10-13 14:58:36,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:58:36,281 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:36,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:36,281 INFO L82 PathProgramCache]: Analyzing trace with hash -420530659, now seen corresponding path program 1 times [2020-10-13 14:58:36,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:36,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236961975] [2020-10-13 14:58:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:36,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:41,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 14:58:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:58:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:58:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:58:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 14:58:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:58:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:41,607 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:41,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:41,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:41,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:41,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:58:41,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:41,646 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 14:58:41,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236961975] [2020-10-13 14:58:41,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:41,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:58:41,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156183175] [2020-10-13 14:58:41,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:58:41,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:58:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:41,648 INFO L87 Difference]: Start difference. First operand 4866 states and 7074 transitions. Second operand 4 states. [2020-10-13 14:58:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:44,323 INFO L93 Difference]: Finished difference Result 11540 states and 17303 transitions. [2020-10-13 14:58:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:58:44,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-13 14:58:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:44,334 INFO L225 Difference]: With dead ends: 11540 [2020-10-13 14:58:44,334 INFO L226 Difference]: Without dead ends: 7408 [2020-10-13 14:58:44,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7408 states. [2020-10-13 14:58:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7408 to 6756. [2020-10-13 14:58:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6756 states. [2020-10-13 14:58:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6756 states to 6756 states and 10083 transitions. [2020-10-13 14:58:44,841 INFO L78 Accepts]: Start accepts. Automaton has 6756 states and 10083 transitions. Word has length 167 [2020-10-13 14:58:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:44,841 INFO L479 AbstractCegarLoop]: Abstraction has 6756 states and 10083 transitions. [2020-10-13 14:58:44,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:58:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6756 states and 10083 transitions. [2020-10-13 14:58:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 14:58:44,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:44,844 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] [2020-10-13 14:58:44,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:58:44,845 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:44,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1965563147, now seen corresponding path program 1 times [2020-10-13 14:58:44,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:44,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126973794] [2020-10-13 14:58:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:45,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 14:58:49,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:58:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:58:49,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:58:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:58:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 14:58:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:50,153 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:50,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:50,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:50,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:58:50,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:50,197 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 14:58:50,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126973794] [2020-10-13 14:58:50,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:50,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:58:50,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545781650] [2020-10-13 14:58:50,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:58:50,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:50,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:58:50,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:58:50,199 INFO L87 Difference]: Start difference. First operand 6756 states and 10083 transitions. Second operand 5 states. [2020-10-13 14:58:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:58:53,777 INFO L93 Difference]: Finished difference Result 15875 states and 23816 transitions. [2020-10-13 14:58:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:58:53,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 14:58:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:58:53,787 INFO L225 Difference]: With dead ends: 15875 [2020-10-13 14:58:53,788 INFO L226 Difference]: Without dead ends: 9483 [2020-10-13 14:58:53,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:58:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2020-10-13 14:58:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 9462. [2020-10-13 14:58:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9462 states. [2020-10-13 14:58:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9462 states to 9462 states and 13972 transitions. [2020-10-13 14:58:54,337 INFO L78 Accepts]: Start accepts. Automaton has 9462 states and 13972 transitions. Word has length 168 [2020-10-13 14:58:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:58:54,337 INFO L479 AbstractCegarLoop]: Abstraction has 9462 states and 13972 transitions. [2020-10-13 14:58:54,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:58:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 9462 states and 13972 transitions. [2020-10-13 14:58:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 14:58:54,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:58:54,341 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] [2020-10-13 14:58:54,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:58:54,342 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:58:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:58:54,342 INFO L82 PathProgramCache]: Analyzing trace with hash 615250761, now seen corresponding path program 1 times [2020-10-13 14:58:54,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:58:54,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13493229] [2020-10-13 14:58:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:58:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:54,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:55,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:59,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:59,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 14:58:59,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:58:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:58:59,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:58:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:58:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 14:58:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:59,668 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:58:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:58:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:58:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:58:59,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:58:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:58:59,715 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 14:58:59,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13493229] [2020-10-13 14:58:59,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:58:59,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:58:59,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015226228] [2020-10-13 14:58:59,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:58:59,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:58:59,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:58:59,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:58:59,717 INFO L87 Difference]: Start difference. First operand 9462 states and 13972 transitions. Second operand 4 states. [2020-10-13 14:59:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:03,888 INFO L93 Difference]: Finished difference Result 25595 states and 37977 transitions. [2020-10-13 14:59:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:59:03,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-13 14:59:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:03,907 INFO L225 Difference]: With dead ends: 25595 [2020-10-13 14:59:03,908 INFO L226 Difference]: Without dead ends: 17132 [2020-10-13 14:59:03,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17132 states. [2020-10-13 14:59:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17132 to 17100. [2020-10-13 14:59:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17100 states. [2020-10-13 14:59:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17100 states to 17100 states and 24928 transitions. [2020-10-13 14:59:04,912 INFO L78 Accepts]: Start accepts. Automaton has 17100 states and 24928 transitions. Word has length 170 [2020-10-13 14:59:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:04,913 INFO L479 AbstractCegarLoop]: Abstraction has 17100 states and 24928 transitions. [2020-10-13 14:59:04,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:59:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 17100 states and 24928 transitions. [2020-10-13 14:59:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 14:59:04,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:04,919 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] [2020-10-13 14:59:04,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:59:04,919 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:04,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1470658470, now seen corresponding path program 1 times [2020-10-13 14:59:04,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:04,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566865419] [2020-10-13 14:59:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:05,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:09,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:09,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 14:59:09,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:59:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:59:09,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:59:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:59:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:10,266 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:59:10,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:10,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:10,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:10,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:59:10,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:10,303 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 14:59:10,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566865419] [2020-10-13 14:59:10,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:10,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:10,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636159006] [2020-10-13 14:59:10,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:10,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:10,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:10,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:10,305 INFO L87 Difference]: Start difference. First operand 17100 states and 24928 transitions. Second operand 5 states. [2020-10-13 14:59:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:13,906 INFO L93 Difference]: Finished difference Result 32723 states and 47790 transitions. [2020-10-13 14:59:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:59:13,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 14:59:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:13,924 INFO L225 Difference]: With dead ends: 32723 [2020-10-13 14:59:13,924 INFO L226 Difference]: Without dead ends: 20173 [2020-10-13 14:59:13,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20173 states. [2020-10-13 14:59:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20173 to 14214. [2020-10-13 14:59:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14214 states. [2020-10-13 14:59:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14214 states to 14214 states and 20693 transitions. [2020-10-13 14:59:14,870 INFO L78 Accepts]: Start accepts. Automaton has 14214 states and 20693 transitions. Word has length 170 [2020-10-13 14:59:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:14,870 INFO L479 AbstractCegarLoop]: Abstraction has 14214 states and 20693 transitions. [2020-10-13 14:59:14,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:59:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14214 states and 20693 transitions. [2020-10-13 14:59:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 14:59:14,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:14,876 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] [2020-10-13 14:59:14,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:59:14,876 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:14,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1322776824, now seen corresponding path program 1 times [2020-10-13 14:59:14,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:14,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325456357] [2020-10-13 14:59:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 14:59:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:59:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:59:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:59:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:59:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 14:59:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:20,203 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:59:20,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:20,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:59:20,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:20,253 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 14:59:20,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325456357] [2020-10-13 14:59:20,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:20,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:20,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935816045] [2020-10-13 14:59:20,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:59:20,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:20,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:59:20,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:59:20,255 INFO L87 Difference]: Start difference. First operand 14214 states and 20693 transitions. Second operand 6 states. [2020-10-13 14:59:20,545 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-13 14:59:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:24,429 INFO L93 Difference]: Finished difference Result 39343 states and 58077 transitions. [2020-10-13 14:59:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:59:24,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-10-13 14:59:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:24,462 INFO L225 Difference]: With dead ends: 39343 [2020-10-13 14:59:24,462 INFO L226 Difference]: Without dead ends: 26112 [2020-10-13 14:59:24,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:59:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26112 states. [2020-10-13 14:59:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26112 to 26106. [2020-10-13 14:59:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26106 states. [2020-10-13 14:59:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26106 states to 26106 states and 38324 transitions. [2020-10-13 14:59:26,575 INFO L78 Accepts]: Start accepts. Automaton has 26106 states and 38324 transitions. Word has length 175 [2020-10-13 14:59:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:26,575 INFO L479 AbstractCegarLoop]: Abstraction has 26106 states and 38324 transitions. [2020-10-13 14:59:26,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:59:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 26106 states and 38324 transitions. [2020-10-13 14:59:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 14:59:26,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:26,584 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] [2020-10-13 14:59:26,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:59:26,584 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:26,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1457066707, now seen corresponding path program 1 times [2020-10-13 14:59:26,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:26,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806793887] [2020-10-13 14:59:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:27,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:27,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 14:59:31,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:59:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:59:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:59:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 14:59:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:31,934 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:59:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:31,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:31,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:31,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:59:31,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:31,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:32,003 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 14:59:32,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806793887] [2020-10-13 14:59:32,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:32,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:32,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682781480] [2020-10-13 14:59:32,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:32,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:32,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:32,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:32,006 INFO L87 Difference]: Start difference. First operand 26106 states and 38324 transitions. Second operand 5 states. [2020-10-13 14:59:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:37,987 INFO L93 Difference]: Finished difference Result 45318 states and 66600 transitions. [2020-10-13 14:59:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:59:37,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 14:59:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:38,017 INFO L225 Difference]: With dead ends: 45318 [2020-10-13 14:59:38,017 INFO L226 Difference]: Without dead ends: 26324 [2020-10-13 14:59:38,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:59:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26324 states. [2020-10-13 14:59:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26324 to 26232. [2020-10-13 14:59:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26232 states. [2020-10-13 14:59:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26232 states to 26232 states and 38463 transitions. [2020-10-13 14:59:40,078 INFO L78 Accepts]: Start accepts. Automaton has 26232 states and 38463 transitions. Word has length 175 [2020-10-13 14:59:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:40,079 INFO L479 AbstractCegarLoop]: Abstraction has 26232 states and 38463 transitions. [2020-10-13 14:59:40,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:59:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 26232 states and 38463 transitions. [2020-10-13 14:59:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 14:59:40,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:40,087 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] [2020-10-13 14:59:40,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:59:40,087 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1682169021, now seen corresponding path program 1 times [2020-10-13 14:59:40,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:40,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434669716] [2020-10-13 14:59:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:40,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:42,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:44,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:44,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 14:59:44,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:59:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4313 [2020-10-13 14:59:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:59:44,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 14:59:44,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:44,751 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:59:44,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:44,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:44,801 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 14:59:44,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434669716] [2020-10-13 14:59:44,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:44,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:44,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717575632] [2020-10-13 14:59:44,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:44,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:44,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:44,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:44,804 INFO L87 Difference]: Start difference. First operand 26232 states and 38463 transitions. Second operand 5 states. [2020-10-13 14:59:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:48,995 INFO L93 Difference]: Finished difference Result 43072 states and 63305 transitions. [2020-10-13 14:59:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:59:48,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 14:59:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:49,028 INFO L225 Difference]: With dead ends: 43072 [2020-10-13 14:59:49,029 INFO L226 Difference]: Without dead ends: 24238 [2020-10-13 14:59:49,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:59:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24238 states. [2020-10-13 14:59:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24238 to 23935. [2020-10-13 14:59:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23935 states. [2020-10-13 14:59:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23935 states to 23935 states and 35090 transitions. [2020-10-13 14:59:51,094 INFO L78 Accepts]: Start accepts. Automaton has 23935 states and 35090 transitions. Word has length 177 [2020-10-13 14:59:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:51,094 INFO L479 AbstractCegarLoop]: Abstraction has 23935 states and 35090 transitions. [2020-10-13 14:59:51,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:59:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 23935 states and 35090 transitions. [2020-10-13 14:59:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 14:59:51,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:51,102 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] [2020-10-13 14:59:51,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:59:51,103 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash 103287730, now seen corresponding path program 1 times [2020-10-13 14:59:51,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:51,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763406393] [2020-10-13 14:59:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:51,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:56,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 14:59:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:59:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:59:56,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 14:59:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:59:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:56,460 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:59:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:56,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:56,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:59:56,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:56,507 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 14:59:56,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763406393] [2020-10-13 14:59:56,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:56,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:56,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741122533] [2020-10-13 14:59:56,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:56,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:56,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:56,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:56,509 INFO L87 Difference]: Start difference. First operand 23935 states and 35090 transitions. Second operand 5 states. [2020-10-13 15:00:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:03,341 INFO L93 Difference]: Finished difference Result 63290 states and 94986 transitions. [2020-10-13 15:00:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:03,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 15:00:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:03,396 INFO L225 Difference]: With dead ends: 63290 [2020-10-13 15:00:03,396 INFO L226 Difference]: Without dead ends: 43730 [2020-10-13 15:00:03,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43730 states. [2020-10-13 15:00:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43730 to 23914. [2020-10-13 15:00:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23914 states. [2020-10-13 15:00:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23914 states to 23914 states and 35038 transitions. [2020-10-13 15:00:05,778 INFO L78 Accepts]: Start accepts. Automaton has 23914 states and 35038 transitions. Word has length 179 [2020-10-13 15:00:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:05,778 INFO L479 AbstractCegarLoop]: Abstraction has 23914 states and 35038 transitions. [2020-10-13 15:00:05,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 23914 states and 35038 transitions. [2020-10-13 15:00:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 15:00:05,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:05,787 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] [2020-10-13 15:00:05,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:00:05,787 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:05,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1779929038, now seen corresponding path program 1 times [2020-10-13 15:00:05,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:05,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489301847] [2020-10-13 15:00:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:10,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:10,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 15:00:10,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:00:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:00:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 15:00:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 15:00:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:11,531 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 52