/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/reducercommutativity/avg10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:12:19,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:12:19,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:12:19,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:12:19,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:12:19,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:12:19,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:12:19,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:12:19,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:12:19,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:12:19,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:12:19,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:12:19,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:12:19,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:12:19,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:12:19,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:12:19,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:12:19,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:12:19,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:12:19,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:12:19,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:12:19,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:12:19,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:12:19,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:12:19,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:12:19,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:12:19,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:12:19,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:12:19,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:12:19,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:12:19,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:12:19,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:12:19,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:12:19,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:12:19,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:12:19,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:12:19,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:12:19,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:12:19,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:12:19,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:12:19,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:12:19,248 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 [2020-10-15 02:12:19,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:12:19,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:12:19,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:12:19,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:12:19,276 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:12:19,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:12:19,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:12:19,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:12:19,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:12:19,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:12:19,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:12:19,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:12:19,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:12:19,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:12:19,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:12:19,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:12:19,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:12:19,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:12:19,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:12:19,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:12:19,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:12:19,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:12:19,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:12:19,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:12:19,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:12:19,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:12:19,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:12:19,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:12:19,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:12:19,280 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:12:19,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:12:19,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:12:19,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:12:19,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:12:19,603 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:12:19,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-15 02:12:19,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa54b75c1/880e8159e93e42dfa519ed9cd610668f/FLAG610820d30 [2020-10-15 02:12:20,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:12:20,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-15 02:12:20,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa54b75c1/880e8159e93e42dfa519ed9cd610668f/FLAG610820d30 [2020-10-15 02:12:20,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa54b75c1/880e8159e93e42dfa519ed9cd610668f [2020-10-15 02:12:20,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:12:20,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:12:20,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:20,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:12:20,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:12:20,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f6d7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20, skipping insertion in model container [2020-10-15 02:12:20,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:12:20,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:12:20,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:20,793 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:12:20,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:20,833 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:12:20,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20 WrapperNode [2020-10-15 02:12:20,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:20,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:12:20,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:12:20,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:12:20,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (1/1) ... [2020-10-15 02:12:20,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:12:20,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:12:20,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:12:20,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:12:20,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (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 [2020-10-15 02:12:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:12:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:12:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-15 02:12:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:12:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:12:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:12:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-15 02:12:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:12:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:12:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:12:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:12:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:12:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:12:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:12:21,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:12:21,301 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:12:21,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:21 BoogieIcfgContainer [2020-10-15 02:12:21,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:12:21,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:12:21,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:12:21,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:12:21,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:12:20" (1/3) ... [2020-10-15 02:12:21,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4754b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:21, skipping insertion in model container [2020-10-15 02:12:21,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:20" (2/3) ... [2020-10-15 02:12:21,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4754b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:21, skipping insertion in model container [2020-10-15 02:12:21,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:21" (3/3) ... [2020-10-15 02:12:21,314 INFO L109 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2020-10-15 02:12:21,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:12:21,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:12:21,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:12:21,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:12:21,409 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:12:21,409 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:12:21,409 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:12:21,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:12:21,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:12:21,410 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:12:21,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:12:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-15 02:12:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:12:21,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:21,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:21,445 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:21,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:21,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-15 02:12:21,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:21,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569383429] [2020-10-15 02:12:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:21,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:22,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:12:23,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:12:23,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-10-15 02:12:23,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:12:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:12:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:12:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:12:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:23,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:12:23,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:23,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:23,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 02:12:23,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:12:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 02:12:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:12:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:23,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:23,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 02:12:23,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:12:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:12:24,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569383429] [2020-10-15 02:12:24,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:12:24,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:12:24,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439145110] [2020-10-15 02:12:24,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:12:24,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:24,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:12:24,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:24,070 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-15 02:12:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:24,484 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-15 02:12:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:12:24,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:12:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:24,497 INFO L225 Difference]: With dead ends: 83 [2020-10-15 02:12:24,497 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 02:12:24,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:12:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 02:12:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-15 02:12:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:12:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-15 02:12:24,560 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-15 02:12:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:24,561 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-15 02:12:24,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:12:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-15 02:12:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 02:12:24,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:24,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:24,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:12:24,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash -883673527, now seen corresponding path program 1 times [2020-10-15 02:12:24,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:24,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883545961] [2020-10-15 02:12:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:24,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:12:25,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:25,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-15 02:12:25,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:25,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:12:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:12:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:12:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:25,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:25,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:25,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:25,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:12:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:25,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:25,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:25,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 02:12:25,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:25,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:12:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:12:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:12:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:25,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:25,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:25,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:25,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 02:12:25,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:25,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:12:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:26,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 02:12:26,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 02:12:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:26,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:12:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:12:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:12:26,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883545961] [2020-10-15 02:12:26,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:26,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:12:26,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819700835] [2020-10-15 02:12:26,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:12:26,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:12:26,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:12:26,039 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-15 02:12:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:26,147 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-15 02:12:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:12:26,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-15 02:12:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:26,148 INFO L225 Difference]: With dead ends: 58 [2020-10-15 02:12:26,148 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 02:12:26,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:12:26,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 02:12:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-15 02:12:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-15 02:12:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-15 02:12:26,157 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-15 02:12:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:26,157 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-15 02:12:26,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:12:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-15 02:12:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 02:12:26,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:26,159 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:26,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:12:26,160 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:26,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:26,160 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-15 02:12:26,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:26,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810337106] [2020-10-15 02:12:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:26,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:31,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 02:12:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:12:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:12:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:31,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:31,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:31,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:31,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:31,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:31,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:12:31,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 02:12:31,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:31,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 02:12:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:12:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 02:12:31,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:31,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:31,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 02:12:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:31,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:12:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 02:12:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:31,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-15 02:12:31,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810337106] [2020-10-15 02:12:31,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:31,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:12:31,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920975017] [2020-10-15 02:12:31,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:12:31,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:31,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:12:31,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:12:31,368 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-15 02:12:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:31,519 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-15 02:12:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:12:31,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-15 02:12:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:31,521 INFO L225 Difference]: With dead ends: 52 [2020-10-15 02:12:31,521 INFO L226 Difference]: Without dead ends: 32 [2020-10-15 02:12:31,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:12:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-15 02:12:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-15 02:12:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 02:12:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-15 02:12:31,533 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-15 02:12:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:31,534 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-15 02:12:31,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:12:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-15 02:12:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 02:12:31,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:31,538 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:31,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:12:31,539 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:31,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-15 02:12:31,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:31,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989704426] [2020-10-15 02:12:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:36,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:12:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:12:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:36,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 02:12:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:12:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:36,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:36,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:12:36,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:36,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:12:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:36,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:12:36,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 02:12:36,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:36,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 02:12:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:36,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:12:36,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 02:12:36,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:36,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:36,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:12:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:36,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:12:36,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:36,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 02:12:36,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:36,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:36,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-15 02:12:36,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989704426] [2020-10-15 02:12:36,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:36,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:12:36,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514027683] [2020-10-15 02:12:36,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:12:36,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:36,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:12:36,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:12:36,793 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-15 02:12:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:36,978 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-15 02:12:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:12:36,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-15 02:12:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:36,980 INFO L225 Difference]: With dead ends: 56 [2020-10-15 02:12:36,980 INFO L226 Difference]: Without dead ends: 34 [2020-10-15 02:12:36,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-15 02:12:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-15 02:12:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 02:12:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-15 02:12:36,992 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-15 02:12:36,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:36,993 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-15 02:12:36,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:12:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-15 02:12:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 02:12:36,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:36,997 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:36,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:12:36,998 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:37,000 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-15 02:12:37,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:37,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539402229] [2020-10-15 02:12:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:38,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:42,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:12:42,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:12:42,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:42,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:12:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:12:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:42,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:42,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:42,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:42,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:42,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:42,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 02:12:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:42,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:12:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:42,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:42,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:42,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:42,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 02:12:42,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:42,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:42,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:42,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:42,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:42,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 02:12:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:42,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:42,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:42,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 02:12:42,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:42,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 02:12:42,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539402229] [2020-10-15 02:12:42,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:42,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:12:42,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541650654] [2020-10-15 02:12:42,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:12:42,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:42,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:12:42,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:12:42,284 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-15 02:12:42,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:42,454 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-15 02:12:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:12:42,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 02:12:42,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:42,456 INFO L225 Difference]: With dead ends: 60 [2020-10-15 02:12:42,456 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:12:42,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:12:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:12:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-15 02:12:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-15 02:12:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-15 02:12:42,469 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-15 02:12:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:42,471 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-15 02:12:42,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:12:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-15 02:12:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 02:12:42,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:42,473 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:42,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:12:42,473 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:42,474 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-15 02:12:42,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:42,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085516025] [2020-10-15 02:12:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:12:47,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:12:47,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:12:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:47,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:12:47,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:47,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 02:12:47,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 02:12:47,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 02:12:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 02:12:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 02:12:47,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 02:12:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 02:12:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 02:12:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-15 02:12:47,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085516025] [2020-10-15 02:12:47,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:47,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:12:47,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974349072] [2020-10-15 02:12:47,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:12:47,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:47,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:12:47,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:12:47,754 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-15 02:12:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:48,009 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-15 02:12:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:12:48,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-15 02:12:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:48,011 INFO L225 Difference]: With dead ends: 64 [2020-10-15 02:12:48,011 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 02:12:48,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:12:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 02:12:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-15 02:12:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:12:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-15 02:12:48,022 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-15 02:12:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:48,023 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-15 02:12:48,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:12:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-15 02:12:48,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:12:48,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:48,026 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:48,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:12:48,027 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:48,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-15 02:12:48,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:48,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754150070] [2020-10-15 02:12:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:12:53,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:12:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:12:53,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:12:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-15 02:12:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:12:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:53,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:12:53,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:12:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 02:12:53,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:12:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:12:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 02:12:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:12:53,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:53,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 02:12:53,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:12:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:12:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:12:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:12:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 02:12:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:12:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:12:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 02:12:53,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754150070] [2020-10-15 02:12:53,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:53,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:12:53,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810147436] [2020-10-15 02:12:53,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:12:53,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:53,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:12:53,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:12:53,348 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-15 02:12:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:53,561 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-15 02:12:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:12:53,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-15 02:12:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:53,562 INFO L225 Difference]: With dead ends: 68 [2020-10-15 02:12:53,562 INFO L226 Difference]: Without dead ends: 40 [2020-10-15 02:12:53,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:12:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-15 02:12:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-15 02:12:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 02:12:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-15 02:12:53,569 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-15 02:12:53,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:53,570 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-15 02:12:53,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:12:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-15 02:12:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 02:12:53,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:53,571 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:53,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:12:53,572 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:53,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-15 02:12:53,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:53,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036878873] [2020-10-15 02:12:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:58,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:58,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:12:58,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:12:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:12:58,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:58,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:12:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 02:12:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:12:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:58,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:58,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:58,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:58,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:58,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:58,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:58,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 02:12:58,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 02:12:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:58,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:12:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:12:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 02:12:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:58,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:58,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 02:12:58,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 02:12:58,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:58,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:12:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:12:58,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-15 02:12:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:58,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 02:12:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 02:12:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:58,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:12:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:12:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-15 02:12:58,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036878873] [2020-10-15 02:12:58,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:58,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:12:58,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663357692] [2020-10-15 02:12:58,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:12:58,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:58,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:12:58,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:58,937 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-15 02:12:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:59,185 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-15 02:12:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:12:59,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-15 02:12:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:59,189 INFO L225 Difference]: With dead ends: 72 [2020-10-15 02:12:59,189 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 02:12:59,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:12:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 02:12:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-15 02:12:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-15 02:12:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-15 02:12:59,196 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-15 02:12:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:59,196 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-15 02:12:59,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:12:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-15 02:12:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 02:12:59,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:59,197 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:59,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:12:59,198 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:59,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-15 02:12:59,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:59,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92969637] [2020-10-15 02:12:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 02:13:04,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:13:04,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 02:13:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:04,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:13:04,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-15 02:13:04,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 02:13:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-15 02:13:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:13:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 02:13:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-15 02:13:04,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92969637] [2020-10-15 02:13:04,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:04,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:13:04,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930184309] [2020-10-15 02:13:04,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:13:04,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:04,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:13:04,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:13:04,584 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-15 02:13:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:04,873 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-15 02:13:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:13:04,874 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-15 02:13:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:04,875 INFO L225 Difference]: With dead ends: 76 [2020-10-15 02:13:04,875 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 02:13:04,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:13:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 02:13:04,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-15 02:13:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 02:13:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-15 02:13:04,881 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-15 02:13:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:04,882 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-15 02:13:04,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:13:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-15 02:13:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 02:13:04,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:04,883 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:04,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:13:04,884 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:04,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:04,884 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-15 02:13:04,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:04,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661119932] [2020-10-15 02:13:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:13:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:13:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 02:13:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:09,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:09,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:09,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:10,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 02:13:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:10,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:13:10,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 02:13:10,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:10,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:13:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:13:10,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 02:13:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:10,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-15 02:13:10,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661119932] [2020-10-15 02:13:10,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:10,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:13:10,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592518714] [2020-10-15 02:13:10,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:13:10,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:10,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:13:10,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:13:10,239 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-15 02:13:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:10,510 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-15 02:13:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:13:10,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-15 02:13:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:10,511 INFO L225 Difference]: With dead ends: 79 [2020-10-15 02:13:10,511 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 02:13:10,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:13:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 02:13:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 02:13:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 02:13:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-15 02:13:10,518 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-15 02:13:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:10,519 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-15 02:13:10,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:13:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-15 02:13:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 02:13:10,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:10,520 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:10,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:13:10,520 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:10,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:10,520 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-15 02:13:10,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:10,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448817563] [2020-10-15 02:13:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 02:13:11,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:11,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-15 02:13:11,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:13:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:11,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:11,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:11,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:13:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 02:13:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:11,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:13:11,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-15 02:13:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:11,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:13:11,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:11,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448817563] [2020-10-15 02:13:11,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:13:11,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:13:11,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214848812] [2020-10-15 02:13:11,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:13:11,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:11,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:13:11,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:13:11,127 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2020-10-15 02:13:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:11,177 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-15 02:13:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 02:13:11,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-15 02:13:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:11,178 INFO L225 Difference]: With dead ends: 84 [2020-10-15 02:13:11,178 INFO L226 Difference]: Without dead ends: 47 [2020-10-15 02:13:11,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:13:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-15 02:13:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-15 02:13:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 02:13:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-15 02:13:11,185 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 92 [2020-10-15 02:13:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:11,185 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-15 02:13:11,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:13:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-15 02:13:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 02:13:11,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:11,186 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:11,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:13:11,187 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1275386585, now seen corresponding path program 1 times [2020-10-15 02:13:11,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:11,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636584820] [2020-10-15 02:13:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:13:11,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-15 02:13:11,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:13:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:13:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:11,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:11,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 02:13:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 02:13:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:11,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:13:11,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:13:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:11,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:11,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:13:11,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:11,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:11,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:11,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636584820] [2020-10-15 02:13:11,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:11,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:13:11,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358278516] [2020-10-15 02:13:11,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:13:11,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:11,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:13:11,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:13:11,855 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-10-15 02:13:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:11,924 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-15 02:13:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:13:11,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-15 02:13:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:11,926 INFO L225 Difference]: With dead ends: 86 [2020-10-15 02:13:11,926 INFO L226 Difference]: Without dead ends: 49 [2020-10-15 02:13:11,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:13:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-15 02:13:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-15 02:13:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-15 02:13:11,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-15 02:13:11,933 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 94 [2020-10-15 02:13:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:11,933 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-15 02:13:11,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:13:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-15 02:13:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 02:13:11,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:11,935 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:11,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:13:11,935 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:11,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1502517179, now seen corresponding path program 2 times [2020-10-15 02:13:11,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:11,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712990042] [2020-10-15 02:13:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:11,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:12,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:12,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 02:13:12,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-15 02:13:12,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:12,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:13:12,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:12,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:12,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:12,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:12,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:12,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:12,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:12,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:12,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:12,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:12,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 02:13:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:12,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:12,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:12,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:12,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:12,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 02:13:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:12,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:12,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:12,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:12,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:12,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:12,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:12,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:12,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:12,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-15 02:13:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:12,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:12,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:12,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:12,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:13:12,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:12,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:12,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712990042] [2020-10-15 02:13:12,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:12,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:13:12,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095402218] [2020-10-15 02:13:12,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:13:12,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:12,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:13:12,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:13:12,596 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-10-15 02:13:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:12,677 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-15 02:13:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:13:12,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-15 02:13:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:12,678 INFO L225 Difference]: With dead ends: 88 [2020-10-15 02:13:12,678 INFO L226 Difference]: Without dead ends: 51 [2020-10-15 02:13:12,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:13:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-15 02:13:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-15 02:13:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 02:13:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-15 02:13:12,692 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 96 [2020-10-15 02:13:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:12,693 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-15 02:13:12,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:13:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-15 02:13:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 02:13:12,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:12,694 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:12,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:13:12,694 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:12,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:12,695 INFO L82 PathProgramCache]: Analyzing trace with hash 731685917, now seen corresponding path program 3 times [2020-10-15 02:13:12,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:12,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519539320] [2020-10-15 02:13:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:13,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 02:13:13,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-15 02:13:13,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:13,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:13,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:13,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:13,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:13,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 02:13:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:13,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:13:13,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:13,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:13,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 02:13:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:13,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:13,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-15 02:13:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:13,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:13,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:13,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:13,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:13,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519539320] [2020-10-15 02:13:13,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:13,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:13:13,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168732510] [2020-10-15 02:13:13,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:13:13,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:13,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:13:13,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:13:13,540 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-10-15 02:13:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:13,627 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-15 02:13:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:13:13,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-15 02:13:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:13,628 INFO L225 Difference]: With dead ends: 90 [2020-10-15 02:13:13,628 INFO L226 Difference]: Without dead ends: 53 [2020-10-15 02:13:13,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:13:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-15 02:13:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-15 02:13:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 02:13:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-15 02:13:13,635 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 98 [2020-10-15 02:13:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:13,635 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-15 02:13:13,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:13:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-15 02:13:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 02:13:13,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:13,636 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:13,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:13:13,637 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:13,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1302781953, now seen corresponding path program 4 times [2020-10-15 02:13:13,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:13,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809658058] [2020-10-15 02:13:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 02:13:14,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-15 02:13:14,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:14,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:13:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:15,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:15,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:15,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:15,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 02:13:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:15,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:15,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:15,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 02:13:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:15,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:15,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:15,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 02:13:15,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:15,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:15,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:15,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:13:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:15,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:15,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:15,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 02:13:15,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:15,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:15,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:15,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:15,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:15,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809658058] [2020-10-15 02:13:15,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:15,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:13:15,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209445830] [2020-10-15 02:13:15,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:13:15,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:15,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:13:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:13:15,105 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 8 states. [2020-10-15 02:13:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:15,229 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-15 02:13:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:13:15,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-15 02:13:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:15,230 INFO L225 Difference]: With dead ends: 92 [2020-10-15 02:13:15,231 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 02:13:15,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:13:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 02:13:15,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-15 02:13:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-15 02:13:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-15 02:13:15,248 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 100 [2020-10-15 02:13:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:15,249 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-15 02:13:15,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:13:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-15 02:13:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 02:13:15,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:15,254 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:15,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:13:15,254 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:15,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2078681953, now seen corresponding path program 5 times [2020-10-15 02:13:15,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:15,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214395526] [2020-10-15 02:13:15,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 02:13:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-10-15 02:13:16,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:13:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:13:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:16,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:16,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 02:13:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:16,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:16,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:16,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 02:13:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:13:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-15 02:13:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:16,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:13:16,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:16,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214395526] [2020-10-15 02:13:16,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:16,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:13:16,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683121014] [2020-10-15 02:13:16,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:13:16,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:13:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:13:16,871 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 9 states. [2020-10-15 02:13:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:16,970 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-10-15 02:13:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:13:16,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-15 02:13:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:16,971 INFO L225 Difference]: With dead ends: 94 [2020-10-15 02:13:16,971 INFO L226 Difference]: Without dead ends: 57 [2020-10-15 02:13:16,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:13:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-15 02:13:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-15 02:13:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 02:13:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-15 02:13:16,987 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 102 [2020-10-15 02:13:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:16,988 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-15 02:13:16,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:13:16,988 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-15 02:13:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:13:16,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:16,992 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:16,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:13:16,992 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:16,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:16,993 INFO L82 PathProgramCache]: Analyzing trace with hash 375252547, now seen corresponding path program 6 times [2020-10-15 02:13:16,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:16,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719442532] [2020-10-15 02:13:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:19,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 02:13:19,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2541 [2020-10-15 02:13:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:19,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:19,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:19,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:19,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:19,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:19,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 02:13:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:19,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:19,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:19,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:19,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 02:13:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:19,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:19,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:19,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:19,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:19,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-15 02:13:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:19,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:19,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:19,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:19,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:19,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719442532] [2020-10-15 02:13:19,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:19,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:13:19,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280775228] [2020-10-15 02:13:19,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:13:19,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:19,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:13:19,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:13:19,679 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 10 states. [2020-10-15 02:13:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:19,786 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-15 02:13:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:13:19,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-15 02:13:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:19,787 INFO L225 Difference]: With dead ends: 96 [2020-10-15 02:13:19,788 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 02:13:19,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:13:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 02:13:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-15 02:13:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 02:13:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-15 02:13:19,794 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 104 [2020-10-15 02:13:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:19,794 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-15 02:13:19,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:13:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-15 02:13:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 02:13:19,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:19,795 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:19,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:13:19,796 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:19,796 INFO L82 PathProgramCache]: Analyzing trace with hash -237866843, now seen corresponding path program 7 times [2020-10-15 02:13:19,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:19,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381029789] [2020-10-15 02:13:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:19,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:21,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:21,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:21,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 02:13:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 02:13:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:21,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-15 02:13:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:21,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:21,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381029789] [2020-10-15 02:13:21,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:21,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:13:21,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47295984] [2020-10-15 02:13:21,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:13:21,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:21,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:13:21,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:21,470 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 11 states. [2020-10-15 02:13:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:21,578 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-15 02:13:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:13:21,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-15 02:13:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:21,580 INFO L225 Difference]: With dead ends: 98 [2020-10-15 02:13:21,580 INFO L226 Difference]: Without dead ends: 61 [2020-10-15 02:13:21,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:21,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-15 02:13:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-15 02:13:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-15 02:13:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-15 02:13:21,587 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 106 [2020-10-15 02:13:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:21,587 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-15 02:13:21,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:13:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-15 02:13:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 02:13:21,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:21,589 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:21,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:13:21,589 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1035081081, now seen corresponding path program 8 times [2020-10-15 02:13:21,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:21,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474159297] [2020-10-15 02:13:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 02:13:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-15 02:13:23,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 02:13:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:23,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:13:23,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:23,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-15 02:13:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:23,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:23,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:23,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474159297] [2020-10-15 02:13:23,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:23,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:13:23,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940952896] [2020-10-15 02:13:23,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:13:23,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:23,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:13:23,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:13:23,450 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 12 states. [2020-10-15 02:13:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:23,547 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-15 02:13:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:13:23,547 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-15 02:13:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:23,548 INFO L225 Difference]: With dead ends: 100 [2020-10-15 02:13:23,549 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 02:13:23,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:13:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 02:13:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-15 02:13:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-15 02:13:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-15 02:13:23,555 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 108 [2020-10-15 02:13:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:23,556 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-15 02:13:23,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:13:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-15 02:13:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 02:13:23,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:23,557 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:23,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:13:23,557 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:23,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1641182185, now seen corresponding path program 9 times [2020-10-15 02:13:23,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:23,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467743884] [2020-10-15 02:13:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:23,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 02:13:26,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2687 [2020-10-15 02:13:26,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:26,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 02:13:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:26,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:26,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 02:13:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:26,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-15 02:13:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-15 02:13:26,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467743884] [2020-10-15 02:13:26,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:26,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:13:26,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758503650] [2020-10-15 02:13:26,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:13:26,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:26,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:13:26,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:13:26,403 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 13 states. [2020-10-15 02:13:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:26,536 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2020-10-15 02:13:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:13:26,537 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-15 02:13:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:26,538 INFO L225 Difference]: With dead ends: 101 [2020-10-15 02:13:26,538 INFO L226 Difference]: Without dead ends: 64 [2020-10-15 02:13:26,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:13:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-15 02:13:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-15 02:13:26,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 02:13:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-15 02:13:26,544 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 110 [2020-10-15 02:13:26,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:26,544 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-15 02:13:26,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:13:26,545 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-15 02:13:26,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 02:13:26,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:26,545 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:26,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 02:13:26,546 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:26,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:26,546 INFO L82 PathProgramCache]: Analyzing trace with hash 844770507, now seen corresponding path program 10 times [2020-10-15 02:13:26,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:26,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412020801] [2020-10-15 02:13:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 02:13:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-15 02:13:26,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:13:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:26,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:26,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:26,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:26,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-15 02:13:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:27,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412020801] [2020-10-15 02:13:27,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:13:27,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:13:27,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856898163] [2020-10-15 02:13:27,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:13:27,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:27,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:13:27,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:13:27,041 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 4 states. [2020-10-15 02:13:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:27,097 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-15 02:13:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 02:13:27,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-15 02:13:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:27,098 INFO L225 Difference]: With dead ends: 97 [2020-10-15 02:13:27,098 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 02:13:27,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:13:27,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 02:13:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-15 02:13:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 02:13:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-15 02:13:27,104 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 112 [2020-10-15 02:13:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:27,105 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-15 02:13:27,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:13:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-15 02:13:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 02:13:27,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:27,106 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:27,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 02:13:27,106 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:27,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1388596151, now seen corresponding path program 1 times [2020-10-15 02:13:27,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:27,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297911120] [2020-10-15 02:13:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 02:13:27,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-15 02:13:27,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:13:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:13:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:13:27,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:27,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-15 02:13:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:13:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:27,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297911120] [2020-10-15 02:13:27,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:27,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:13:27,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139436958] [2020-10-15 02:13:27,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:13:27,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:27,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:13:27,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:13:27,718 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-10-15 02:13:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:27,792 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-15 02:13:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:13:27,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-15 02:13:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:27,794 INFO L225 Difference]: With dead ends: 99 [2020-10-15 02:13:27,794 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 02:13:27,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:13:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 02:13:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-15 02:13:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 02:13:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-15 02:13:27,800 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 114 [2020-10-15 02:13:27,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:27,800 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-15 02:13:27,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:13:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-15 02:13:27,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 02:13:27,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:27,802 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:27,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 02:13:27,802 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:27,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:27,802 INFO L82 PathProgramCache]: Analyzing trace with hash -170306489, now seen corresponding path program 2 times [2020-10-15 02:13:27,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:27,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608977781] [2020-10-15 02:13:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 02:13:28,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-15 02:13:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:13:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:28,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:28,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:28,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:28,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:28,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:13:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:28,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-15 02:13:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:28,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:28,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:28,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:28,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608977781] [2020-10-15 02:13:28,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:28,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:13:28,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973553695] [2020-10-15 02:13:28,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:13:28,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:28,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:13:28,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:13:28,677 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 6 states. [2020-10-15 02:13:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:28,759 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-15 02:13:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:13:28,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-15 02:13:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:28,760 INFO L225 Difference]: With dead ends: 101 [2020-10-15 02:13:28,761 INFO L226 Difference]: Without dead ends: 70 [2020-10-15 02:13:28,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:13:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-15 02:13:28,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-15 02:13:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 02:13:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-15 02:13:28,770 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 116 [2020-10-15 02:13:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:28,770 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-15 02:13:28,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:13:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-15 02:13:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 02:13:28,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:28,775 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:28,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 02:13:28,780 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:28,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:28,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1920013115, now seen corresponding path program 3 times [2020-10-15 02:13:28,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:28,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839217714] [2020-10-15 02:13:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:29,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 02:13:29,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-15 02:13:29,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:29,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:29,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:29,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:29,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:29,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:29,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:29,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:29,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:29,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:29,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:29,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:29,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:29,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:29,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:29,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:29,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:29,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:29,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:13:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:29,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-15 02:13:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:13:29,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:29,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:29,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839217714] [2020-10-15 02:13:29,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:29,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:13:29,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633967511] [2020-10-15 02:13:29,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:13:29,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:29,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:13:29,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:13:29,834 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 7 states. [2020-10-15 02:13:29,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:29,928 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-15 02:13:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:13:29,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-15 02:13:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:29,929 INFO L225 Difference]: With dead ends: 103 [2020-10-15 02:13:29,929 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 02:13:29,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:13:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 02:13:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-15 02:13:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-15 02:13:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-15 02:13:29,938 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 118 [2020-10-15 02:13:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:29,939 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-15 02:13:29,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:13:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-15 02:13:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 02:13:29,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:29,942 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:29,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 02:13:29,942 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:29,942 INFO L82 PathProgramCache]: Analyzing trace with hash 239099331, now seen corresponding path program 4 times [2020-10-15 02:13:29,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:29,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639718180] [2020-10-15 02:13:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:13:30,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:30,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:30,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:30,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:30,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:30,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:30,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:30,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:13:30,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:30,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:30,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:30,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-15 02:13:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:31,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:31,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639718180] [2020-10-15 02:13:31,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:31,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:13:31,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272132365] [2020-10-15 02:13:31,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:13:31,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:31,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:13:31,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:13:31,013 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 8 states. [2020-10-15 02:13:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:31,113 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-15 02:13:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:13:31,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-15 02:13:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:31,115 INFO L225 Difference]: With dead ends: 105 [2020-10-15 02:13:31,115 INFO L226 Difference]: Without dead ends: 74 [2020-10-15 02:13:31,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:13:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-15 02:13:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-15 02:13:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 02:13:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-15 02:13:31,121 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-15 02:13:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:31,121 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-15 02:13:31,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:13:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-15 02:13:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 02:13:31,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:31,123 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:31,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 02:13:31,123 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash 676955969, now seen corresponding path program 5 times [2020-10-15 02:13:31,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:31,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712108121] [2020-10-15 02:13:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 02:13:32,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1333 [2020-10-15 02:13:32,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:13:32,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:32,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:13:32,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:32,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:32,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:32,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:13:32,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-15 02:13:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:32,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:32,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:32,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712108121] [2020-10-15 02:13:32,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:32,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:13:32,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250620982] [2020-10-15 02:13:32,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:13:32,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:32,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:13:32,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:13:32,573 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 9 states. [2020-10-15 02:13:32,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:32,677 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-15 02:13:32,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:13:32,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-10-15 02:13:32,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:32,679 INFO L225 Difference]: With dead ends: 107 [2020-10-15 02:13:32,679 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 02:13:32,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:13:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 02:13:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-15 02:13:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-15 02:13:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-15 02:13:32,689 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-15 02:13:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:32,689 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-15 02:13:32,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:13:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-15 02:13:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 02:13:32,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:32,690 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:32,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 02:13:32,691 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:32,692 INFO L82 PathProgramCache]: Analyzing trace with hash 550390079, now seen corresponding path program 6 times [2020-10-15 02:13:32,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:32,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927551862] [2020-10-15 02:13:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:34,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-15 02:13:34,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1991 [2020-10-15 02:13:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:34,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:34,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:34,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:34,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:34,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:34,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:34,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:13:34,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:34,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:34,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:34,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:13:34,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:34,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:13:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:13:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:34,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:34,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927551862] [2020-10-15 02:13:34,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:34,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:13:34,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183745683] [2020-10-15 02:13:34,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:13:34,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:13:34,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:13:34,830 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-15 02:13:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:34,935 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-15 02:13:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:13:34,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-15 02:13:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:34,938 INFO L225 Difference]: With dead ends: 109 [2020-10-15 02:13:34,938 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 02:13:34,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:13:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 02:13:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-15 02:13:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 02:13:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-15 02:13:34,944 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-15 02:13:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:34,945 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-15 02:13:34,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:13:34,945 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-15 02:13:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 02:13:34,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:34,948 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:34,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 02:13:34,948 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:34,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:34,949 INFO L82 PathProgramCache]: Analyzing trace with hash -820345923, now seen corresponding path program 7 times [2020-10-15 02:13:34,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:34,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469973530] [2020-10-15 02:13:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:36,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 02:13:36,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1934 [2020-10-15 02:13:36,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:36,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:36,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:36,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:36,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:36,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:36,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:36,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:36,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:36,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:37,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:37,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:37,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:37,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:13:37,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:37,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:37,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:37,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:37,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:37,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:37,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:37,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:37,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:13:37,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:37,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-15 02:13:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:37,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:37,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:37,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469973530] [2020-10-15 02:13:37,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:37,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:13:37,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15124466] [2020-10-15 02:13:37,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:13:37,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:37,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:13:37,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:37,041 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 11 states. [2020-10-15 02:13:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:37,151 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-15 02:13:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:13:37,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2020-10-15 02:13:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:37,153 INFO L225 Difference]: With dead ends: 111 [2020-10-15 02:13:37,153 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 02:13:37,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 02:13:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-15 02:13:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 02:13:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-15 02:13:37,159 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-15 02:13:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:37,160 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-15 02:13:37,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:13:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-15 02:13:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 02:13:37,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:37,161 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:37,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 02:13:37,161 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:37,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:37,162 INFO L82 PathProgramCache]: Analyzing trace with hash 457316027, now seen corresponding path program 8 times [2020-10-15 02:13:37,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:37,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091917579] [2020-10-15 02:13:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2433 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:39,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 02:13:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:39,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:13:39,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:39,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:13:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-15 02:13:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 02:13:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-15 02:13:39,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091917579] [2020-10-15 02:13:39,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:39,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:13:39,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368952819] [2020-10-15 02:13:39,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:13:39,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:39,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:13:39,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:13:39,749 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 12 states. [2020-10-15 02:13:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:39,859 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2020-10-15 02:13:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:13:39,859 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-15 02:13:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:39,860 INFO L225 Difference]: With dead ends: 112 [2020-10-15 02:13:39,860 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 02:13:39,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:13:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 02:13:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-15 02:13:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 02:13:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-15 02:13:39,867 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-15 02:13:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:39,867 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-15 02:13:39,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:13:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-15 02:13:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-15 02:13:39,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:39,869 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:39,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 02:13:39,869 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash -70196679, now seen corresponding path program 9 times [2020-10-15 02:13:39,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:39,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821124656] [2020-10-15 02:13:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-15 02:13:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9056 [2020-10-15 02:13:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:49,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-15 02:13:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 02:13:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 02:13:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0