/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-programs/copysome1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:27:32,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:27:32,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:27:32,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:27:32,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:27:32,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:27:32,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:27:32,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:27:32,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:27:32,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:27:32,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:27:32,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:27:32,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:27:32,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:27:32,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:27:32,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:27:32,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:27:32,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:27:32,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:27:32,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:27:32,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:27:32,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:27:32,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:27:32,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:27:32,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:27:32,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:27:32,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:27:32,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:27:32,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:27:32,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:27:32,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:27:32,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:27:32,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:27:32,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:27:32,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:27:32,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:27:32,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:27:32,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:27:32,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:27:32,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:27:32,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:27:32,227 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 [2020-10-28 09:27:32,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:27:32,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:27:32,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:27:32,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:27:32,284 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:27:32,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:27:32,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:27:32,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:27:32,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:27:32,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:27:32,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:27:32,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:27:32,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:27:32,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:27:32,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:27:32,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:27:32,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:27:32,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:27:32,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:27:32,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:27:32,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:27:32,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:32,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:27:32,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:27:32,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:27:32,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:27:32,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:27:32,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:27:32,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:27:32,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:27:32,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:27:32,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:27:32,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:27:32,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:27:32,777 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:27:32,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome1-1.i [2020-10-28 09:27:32,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa6e367e/66e0f90990d24c63ade350780c247eff/FLAG0967e888d [2020-10-28 09:27:33,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:27:33,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/copysome1-1.i [2020-10-28 09:27:33,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa6e367e/66e0f90990d24c63ade350780c247eff/FLAG0967e888d [2020-10-28 09:27:33,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa6e367e/66e0f90990d24c63ade350780c247eff [2020-10-28 09:27:33,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:27:33,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:27:33,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:33,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:27:33,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:27:33,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:33" (1/1) ... [2020-10-28 09:27:33,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc85872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:33, skipping insertion in model container [2020-10-28 09:27:33,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:33" (1/1) ... [2020-10-28 09:27:33,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:27:33,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:27:34,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:34,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:27:34,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:34,203 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:27:34,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34 WrapperNode [2020-10-28 09:27:34,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:34,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:27:34,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:27:34,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:27:34,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (1/1) ... [2020-10-28 09:27:34,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (1/1) ... [2020-10-28 09:27:34,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (1/1) ... [2020-10-28 09:27:34,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (1/1) ... [2020-10-28 09:27:34,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (1/1) ... [2020-10-28 09:27:34,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (1/1) ... [2020-10-28 09:27:34,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (1/1) ... [2020-10-28 09:27:34,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:27:34,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:27:34,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:27:34,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:27:34,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (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 [2020-10-28 09:27:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:27:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:27:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:27:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:27:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:27:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:27:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:27:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:27:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:27:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:27:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:27:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:27:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:27:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:27:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:27:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:27:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:27:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:27:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:27:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:27:34,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:27:34,761 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:27:34,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:34 BoogieIcfgContainer [2020-10-28 09:27:34,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:27:34,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:27:34,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:27:34,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:27:34,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:27:33" (1/3) ... [2020-10-28 09:27:34,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660cec1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:34, skipping insertion in model container [2020-10-28 09:27:34,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:34" (2/3) ... [2020-10-28 09:27:34,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660cec1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:34, skipping insertion in model container [2020-10-28 09:27:34,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:34" (3/3) ... [2020-10-28 09:27:34,772 INFO L111 eAbstractionObserver]: Analyzing ICFG copysome1-1.i [2020-10-28 09:27:34,803 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:27:34,809 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:27:34,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:27:34,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:27:34,868 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:27:34,868 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:27:34,868 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:27:34,868 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:27:34,868 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:27:34,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:27:34,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:27:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-28 09:27:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 09:27:34,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:34,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:34,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1436436000, now seen corresponding path program 1 times [2020-10-28 09:27:34,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:34,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416402365] [2020-10-28 09:27:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:35,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:35,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:35,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 09:27:35,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:27:35,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 09:27:35,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:35,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 09:27:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:27:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:35,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:35,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:35,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:35,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:27:35,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:35,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:35,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:27:35,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416402365] [2020-10-28 09:27:35,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:35,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:27:35,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164748479] [2020-10-28 09:27:35,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:27:35,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:35,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:27:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:35,531 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-10-28 09:27:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:35,647 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-28 09:27:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:27:35,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-28 09:27:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:35,657 INFO L225 Difference]: With dead ends: 57 [2020-10-28 09:27:35,657 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 09:27:35,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 09:27:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 09:27:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 09:27:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-28 09:27:35,705 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2020-10-28 09:27:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:35,706 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-28 09:27:35,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:27:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-28 09:27:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 09:27:35,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:35,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:35,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:27:35,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:35,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:35,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1471379055, now seen corresponding path program 1 times [2020-10-28 09:27:35,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:35,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075101838] [2020-10-28 09:27:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 09:27:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-28 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:27:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:27:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:36,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:36,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:36,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:27:36,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:36,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:27:36,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075101838] [2020-10-28 09:27:36,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:36,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:27:36,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491196799] [2020-10-28 09:27:36,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:27:36,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:36,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:27:36,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:27:36,051 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-28 09:27:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:36,180 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-28 09:27:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:27:36,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-28 09:27:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:36,182 INFO L225 Difference]: With dead ends: 49 [2020-10-28 09:27:36,182 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 09:27:36,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:27:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 09:27:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-28 09:27:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 09:27:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 09:27:36,204 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2020-10-28 09:27:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:36,205 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 09:27:36,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:27:36,205 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 09:27:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 09:27:36,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:36,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:36,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:27:36,207 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash 435813880, now seen corresponding path program 1 times [2020-10-28 09:27:36,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:36,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721086533] [2020-10-28 09:27:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:36,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:37,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:37,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:27:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-28 09:27:37,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:37,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:27:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:27:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:27:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:37,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:37,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:37,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:27:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:37,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:27:37,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721086533] [2020-10-28 09:27:37,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:37,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:27:37,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797418843] [2020-10-28 09:27:37,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:27:37,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:37,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:27:37,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:27:37,613 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-28 09:27:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:37,750 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-10-28 09:27:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:27:37,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-28 09:27:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:37,752 INFO L225 Difference]: With dead ends: 55 [2020-10-28 09:27:37,752 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 09:27:37,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:27:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 09:27:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-28 09:27:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:27:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-28 09:27:37,762 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2020-10-28 09:27:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:37,762 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-28 09:27:37,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:27:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-28 09:27:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:27:37,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:37,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:37,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:27:37,764 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:37,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:37,765 INFO L82 PathProgramCache]: Analyzing trace with hash -943322827, now seen corresponding path program 2 times [2020-10-28 09:27:37,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:37,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293327174] [2020-10-28 09:27:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:37,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:39,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 09:27:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1825 [2020-10-28 09:27:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:39,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:27:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:27:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:27:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:39,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:27:39,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:39,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:27:39,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293327174] [2020-10-28 09:27:39,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:39,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:27:39,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419385919] [2020-10-28 09:27:39,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:27:39,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:39,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:27:39,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:27:39,718 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 6 states. [2020-10-28 09:27:39,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:39,867 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2020-10-28 09:27:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:27:39,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-28 09:27:39,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:39,869 INFO L225 Difference]: With dead ends: 63 [2020-10-28 09:27:39,869 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 09:27:39,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:27:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 09:27:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-28 09:27:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 09:27:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-28 09:27:39,878 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 28 [2020-10-28 09:27:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:39,879 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-28 09:27:39,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:27:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-28 09:27:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 09:27:39,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:39,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:39,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:27:39,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:39,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:39,883 INFO L82 PathProgramCache]: Analyzing trace with hash -600953260, now seen corresponding path program 3 times [2020-10-28 09:27:39,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:39,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736244495] [2020-10-28 09:27:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:44,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:44,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 09:27:44,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:44,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:27:44,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:44,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:27:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 09:27:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:27:44,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:45,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:45,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:45,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:45,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:27:45,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:45,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:45,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:45,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:27:45,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736244495] [2020-10-28 09:27:45,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:45,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:27:45,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913864113] [2020-10-28 09:27:45,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:27:45,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:45,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:27:45,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:27:45,025 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-10-28 09:27:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:45,221 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2020-10-28 09:27:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:27:45,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-28 09:27:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:45,222 INFO L225 Difference]: With dead ends: 71 [2020-10-28 09:27:45,223 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 09:27:45,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:27:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 09:27:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-28 09:27:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 09:27:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 09:27:45,239 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 33 [2020-10-28 09:27:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:45,239 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 09:27:45,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:27:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 09:27:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 09:27:45,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:45,244 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:45,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:27:45,245 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash -40650535, now seen corresponding path program 4 times [2020-10-28 09:27:45,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:45,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642443039] [2020-10-28 09:27:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:50,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:50,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:27:50,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:27:50,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:50,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:27:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:27:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:27:50,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:50,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:50,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:50,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:27:50,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:50,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:27:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 09:27:50,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642443039] [2020-10-28 09:27:50,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:50,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:27:50,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015314490] [2020-10-28 09:27:50,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:27:50,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:50,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:27:50,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:27:50,413 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2020-10-28 09:27:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:50,619 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2020-10-28 09:27:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:27:50,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-28 09:27:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:50,622 INFO L225 Difference]: With dead ends: 79 [2020-10-28 09:27:50,622 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 09:27:50,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:27:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 09:27:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-28 09:27:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 09:27:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-28 09:27:50,639 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2020-10-28 09:27:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:50,640 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-28 09:27:50,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:27:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-28 09:27:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 09:27:50,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:50,642 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:50,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:27:50,643 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:50,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1245770064, now seen corresponding path program 5 times [2020-10-28 09:27:50,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:50,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268866010] [2020-10-28 09:27:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:55,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:55,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 09:27:55,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:27:55,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:55,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:27:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:27:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:27:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:55,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:55,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:55,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:55,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:27:55,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:55,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 09:27:55,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268866010] [2020-10-28 09:27:55,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:55,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:27:55,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117820076] [2020-10-28 09:27:55,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:27:55,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:55,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:27:55,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:27:55,809 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 9 states. [2020-10-28 09:27:55,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:55,990 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2020-10-28 09:27:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:27:55,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-28 09:27:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:55,992 INFO L225 Difference]: With dead ends: 87 [2020-10-28 09:27:55,992 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 09:27:55,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:27:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 09:27:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-28 09:27:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 09:27:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-28 09:27:56,008 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 43 [2020-10-28 09:27:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:56,008 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-28 09:27:56,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:27:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-28 09:27:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 09:27:56,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:56,012 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:56,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:27:56,013 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:56,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:56,014 INFO L82 PathProgramCache]: Analyzing trace with hash -25962371, now seen corresponding path program 6 times [2020-10-28 09:27:56,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:56,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431032234] [2020-10-28 09:27:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:28:01,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:28:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:28:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:01,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:28:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:28:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:28:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:01,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:01,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:28:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:01,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:28:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 09:28:01,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431032234] [2020-10-28 09:28:01,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:01,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:28:01,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222060103] [2020-10-28 09:28:01,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:28:01,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:01,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:28:01,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:28:01,194 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 10 states. [2020-10-28 09:28:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:01,368 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2020-10-28 09:28:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:28:01,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-28 09:28:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:01,369 INFO L225 Difference]: With dead ends: 95 [2020-10-28 09:28:01,370 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 09:28:01,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:28:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 09:28:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-10-28 09:28:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:28:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-28 09:28:01,383 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 48 [2020-10-28 09:28:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:01,384 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-28 09:28:01,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:28:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-28 09:28:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:28:01,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:01,388 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:01,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:28:01,389 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1389469940, now seen corresponding path program 7 times [2020-10-28 09:28:01,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:01,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981711883] [2020-10-28 09:28:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:06,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:06,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 09:28:06,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:28:06,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:28:06,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:06,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:28:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:28:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 09:28:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:07,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:07,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:28:07,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:07,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-28 09:28:07,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981711883] [2020-10-28 09:28:07,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:07,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:28:07,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574882703] [2020-10-28 09:28:07,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:28:07,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:07,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:28:07,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:28:07,178 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 10 states. [2020-10-28 09:28:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:07,619 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2020-10-28 09:28:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:28:07,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-28 09:28:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:07,622 INFO L225 Difference]: With dead ends: 97 [2020-10-28 09:28:07,622 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 09:28:07,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:28:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 09:28:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-10-28 09:28:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 09:28:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2020-10-28 09:28:07,647 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 53 [2020-10-28 09:28:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:07,647 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2020-10-28 09:28:07,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:28:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2020-10-28 09:28:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:28:07,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:07,650 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:07,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:28:07,652 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:07,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:07,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1366837686, now seen corresponding path program 1 times [2020-10-28 09:28:07,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:07,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112838266] [2020-10-28 09:28:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:12,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:12,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 09:28:12,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:28:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:28:12,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:12,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:28:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:28:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:28:12,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:12,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:12,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:12,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:28:12,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:12,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-28 09:28:12,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112838266] [2020-10-28 09:28:12,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:12,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:28:12,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034448751] [2020-10-28 09:28:12,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:28:12,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:28:12,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:28:12,817 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 6 states. [2020-10-28 09:28:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:13,010 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2020-10-28 09:28:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:28:13,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-28 09:28:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:13,013 INFO L225 Difference]: With dead ends: 114 [2020-10-28 09:28:13,014 INFO L226 Difference]: Without dead ends: 101 [2020-10-28 09:28:13,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:28:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-28 09:28:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2020-10-28 09:28:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 09:28:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2020-10-28 09:28:13,026 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 53 [2020-10-28 09:28:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:13,027 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2020-10-28 09:28:13,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:28:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2020-10-28 09:28:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 09:28:13,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:13,028 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:13,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:28:13,029 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:13,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:13,029 INFO L82 PathProgramCache]: Analyzing trace with hash 343669046, now seen corresponding path program 1 times [2020-10-28 09:28:13,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:13,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057648600] [2020-10-28 09:28:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:18,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 09:28:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:28:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:28:18,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:18,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:28:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:28:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:28:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:18,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:18,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:18,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:18,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:18,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:28:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-28 09:28:18,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057648600] [2020-10-28 09:28:18,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:28:18,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:28:18,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426051432] [2020-10-28 09:28:18,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:28:18,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:18,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:28:18,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:28:18,142 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand 5 states. [2020-10-28 09:28:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:18,290 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2020-10-28 09:28:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:28:18,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-28 09:28:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:18,292 INFO L225 Difference]: With dead ends: 103 [2020-10-28 09:28:18,292 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 09:28:18,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:28:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 09:28:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-28 09:28:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 09:28:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-10-28 09:28:18,302 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 56 [2020-10-28 09:28:18,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:18,303 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-10-28 09:28:18,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:28:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-10-28 09:28:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 09:28:18,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:18,304 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:18,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:28:18,304 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:18,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2035811134, now seen corresponding path program 1 times [2020-10-28 09:28:18,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:18,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920537638] [2020-10-28 09:28:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:23,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:28:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:23,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:23,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:23,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:28:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:23,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:23,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:23,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:23,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:23,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:23,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:23,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-28 09:28:23,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920537638] [2020-10-28 09:28:23,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:23,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:28:23,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683351159] [2020-10-28 09:28:23,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:28:23,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:23,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:28:23,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:28:23,451 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 11 states. [2020-10-28 09:28:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:23,673 INFO L93 Difference]: Finished difference Result 117 states and 138 transitions. [2020-10-28 09:28:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:28:23,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-28 09:28:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:23,674 INFO L225 Difference]: With dead ends: 117 [2020-10-28 09:28:23,675 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 09:28:23,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:28:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 09:28:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-10-28 09:28:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 09:28:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2020-10-28 09:28:23,683 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 62 [2020-10-28 09:28:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:23,683 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2020-10-28 09:28:23,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:28:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2020-10-28 09:28:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 09:28:23,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:23,684 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:23,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:28:23,685 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1961501129, now seen corresponding path program 2 times [2020-10-28 09:28:23,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:23,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356782385] [2020-10-28 09:28:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:28,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:28,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:28:28,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:28:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:28:28,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:28,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:28:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:28:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 09:28:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:29,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:29,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:29,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:29,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:29,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:28:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:29,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:29,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:28:29,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:29,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 09:28:29,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356782385] [2020-10-28 09:28:29,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:29,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:28:29,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994392873] [2020-10-28 09:28:29,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:28:29,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:28:29,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:28:29,355 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand 12 states. [2020-10-28 09:28:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:29,887 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2020-10-28 09:28:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:28:29,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-28 09:28:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:29,889 INFO L225 Difference]: With dead ends: 114 [2020-10-28 09:28:29,889 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 09:28:29,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:28:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 09:28:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2020-10-28 09:28:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:28:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2020-10-28 09:28:29,911 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 67 [2020-10-28 09:28:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:29,911 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2020-10-28 09:28:29,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:28:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2020-10-28 09:28:29,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 09:28:29,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:29,916 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:29,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:28:29,916 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:29,917 INFO L82 PathProgramCache]: Analyzing trace with hash 116133963, now seen corresponding path program 1 times [2020-10-28 09:28:29,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:29,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199891540] [2020-10-28 09:28:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:29,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:34,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:34,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:28:34,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:28:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 09:28:34,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:34,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:28:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:28:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 09:28:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:35,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:35,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:35,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:35,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:35,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:35,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:35,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:35,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:35,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:35,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:28:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:35,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:35,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:35,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:35,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:35,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 09:28:35,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199891540] [2020-10-28 09:28:35,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:35,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:28:35,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501903614] [2020-10-28 09:28:35,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:28:35,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:35,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:28:35,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:28:35,096 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand 8 states. [2020-10-28 09:28:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:35,449 INFO L93 Difference]: Finished difference Result 133 states and 156 transitions. [2020-10-28 09:28:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:28:35,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-28 09:28:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:35,453 INFO L225 Difference]: With dead ends: 133 [2020-10-28 09:28:35,453 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 09:28:35,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:28:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 09:28:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 107. [2020-10-28 09:28:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 09:28:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2020-10-28 09:28:35,487 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 67 [2020-10-28 09:28:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:35,488 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2020-10-28 09:28:35,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:28:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2020-10-28 09:28:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 09:28:35,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:35,497 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:35,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:28:35,501 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:35,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1197924697, now seen corresponding path program 1 times [2020-10-28 09:28:35,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:35,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491168177] [2020-10-28 09:28:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:28:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:28:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 09:28:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:40,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:40,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:40,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:40,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:40,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:40,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:28:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:40,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:40,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:40,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:40,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:28:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:28:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 09:28:40,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491168177] [2020-10-28 09:28:40,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:40,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:28:40,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516238875] [2020-10-28 09:28:40,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:28:40,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:40,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:28:40,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:28:40,634 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand 6 states. [2020-10-28 09:28:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:40,771 INFO L93 Difference]: Finished difference Result 123 states and 144 transitions. [2020-10-28 09:28:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:28:40,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-28 09:28:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:40,773 INFO L225 Difference]: With dead ends: 123 [2020-10-28 09:28:40,773 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 09:28:40,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:28:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 09:28:40,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-28 09:28:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:28:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-28 09:28:40,792 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 70 [2020-10-28 09:28:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:40,794 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-28 09:28:40,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:28:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-28 09:28:40,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 09:28:40,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:40,798 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:40,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:28:40,798 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:40,800 INFO L82 PathProgramCache]: Analyzing trace with hash 904856865, now seen corresponding path program 3 times [2020-10-28 09:28:40,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:40,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589785746] [2020-10-28 09:28:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:45,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:45,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:28:45,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:28:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:28:45,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:45,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:28:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:28:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:28:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:45,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:45,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:28:45,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:45,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:45,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:45,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:28:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:45,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:45,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:45,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:45,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:28:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:45,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:45,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:45,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:45,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:45,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:45,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 09:28:45,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589785746] [2020-10-28 09:28:45,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:45,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:28:45,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466647708] [2020-10-28 09:28:45,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:28:45,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:45,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:28:45,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:28:45,995 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 12 states. [2020-10-28 09:28:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:46,208 INFO L93 Difference]: Finished difference Result 149 states and 170 transitions. [2020-10-28 09:28:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:28:46,209 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-10-28 09:28:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:46,210 INFO L225 Difference]: With dead ends: 149 [2020-10-28 09:28:46,210 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 09:28:46,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:28:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 09:28:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-28 09:28:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 09:28:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-10-28 09:28:46,220 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 76 [2020-10-28 09:28:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:46,221 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-10-28 09:28:46,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:28:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-10-28 09:28:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 09:28:46,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:46,222 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:46,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:28:46,222 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1237948584, now seen corresponding path program 4 times [2020-10-28 09:28:46,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:46,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381629567] [2020-10-28 09:28:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:51,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:28:51,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:28:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 09:28:51,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:51,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:28:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 09:28:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:28:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 09:28:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:51,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:51,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:51,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:28:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-28 09:28:51,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381629567] [2020-10-28 09:28:51,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:51,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:28:51,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828999051] [2020-10-28 09:28:51,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:28:51,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:51,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:28:51,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:28:51,444 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 13 states. [2020-10-28 09:28:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:51,711 INFO L93 Difference]: Finished difference Result 157 states and 180 transitions. [2020-10-28 09:28:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:28:51,712 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-10-28 09:28:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:51,713 INFO L225 Difference]: With dead ends: 157 [2020-10-28 09:28:51,713 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:28:51,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:28:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:28:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2020-10-28 09:28:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 09:28:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-10-28 09:28:51,723 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 81 [2020-10-28 09:28:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:51,723 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-10-28 09:28:51,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:28:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-10-28 09:28:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 09:28:51,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:51,725 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:51,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:28:51,725 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:51,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2021415995, now seen corresponding path program 5 times [2020-10-28 09:28:51,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:51,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632719467] [2020-10-28 09:28:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:56,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:56,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 09:28:56,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:28:56,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 09:28:56,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:56,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:56,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:28:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:28:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:28:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:56,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:28:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:56,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:56,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:56,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:28:56,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:28:56,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:56,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:28:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:56,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:28:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:56,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:56,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:56,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:56,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:28:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:56,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:28:56,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:28:56,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:28:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:28:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:28:56,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:28:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:28:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:28:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:28:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:28:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 09:28:56,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632719467] [2020-10-28 09:28:56,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:28:56,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:28:56,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400443060] [2020-10-28 09:28:56,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:28:56,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:28:56,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:28:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:28:56,999 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 14 states. [2020-10-28 09:28:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:28:57,209 INFO L93 Difference]: Finished difference Result 165 states and 190 transitions. [2020-10-28 09:28:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:28:57,209 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-28 09:28:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:28:57,210 INFO L225 Difference]: With dead ends: 165 [2020-10-28 09:28:57,210 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 09:28:57,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:28:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 09:28:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2020-10-28 09:28:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 09:28:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2020-10-28 09:28:57,220 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 86 [2020-10-28 09:28:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:28:57,221 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2020-10-28 09:28:57,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:28:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2020-10-28 09:28:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 09:28:57,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:28:57,222 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:28:57,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:28:57,222 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:28:57,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:28:57,223 INFO L82 PathProgramCache]: Analyzing trace with hash -465950204, now seen corresponding path program 6 times [2020-10-28 09:28:57,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:28:57,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396862464] [2020-10-28 09:28:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:28:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:28:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:28:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:02,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 09:29:02,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 09:29:02,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:02,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:29:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 09:29:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:29:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:02,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:02,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:29:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:02,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:02,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:29:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:02,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:02,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:02,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:02,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 4 proven. 176 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-28 09:29:02,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396862464] [2020-10-28 09:29:02,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:02,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:29:02,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498253847] [2020-10-28 09:29:02,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:29:02,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:02,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:29:02,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:29:02,473 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 15 states. [2020-10-28 09:29:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:02,746 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2020-10-28 09:29:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:29:02,747 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-28 09:29:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:02,748 INFO L225 Difference]: With dead ends: 173 [2020-10-28 09:29:02,748 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 09:29:02,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:29:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 09:29:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2020-10-28 09:29:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 09:29:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2020-10-28 09:29:02,765 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 91 [2020-10-28 09:29:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:02,765 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2020-10-28 09:29:02,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:29:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2020-10-28 09:29:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 09:29:02,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:02,766 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:02,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:29:02,766 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1703316887, now seen corresponding path program 7 times [2020-10-28 09:29:02,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:02,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630010965] [2020-10-28 09:29:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:07,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:07,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 09:29:07,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 09:29:07,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:07,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:29:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 09:29:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:29:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:08,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:08,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:08,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:08,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:08,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:29:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 09:29:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 4 proven. 210 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-28 09:29:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630010965] [2020-10-28 09:29:08,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:08,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:29:08,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173455125] [2020-10-28 09:29:08,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:29:08,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:08,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:29:08,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:29:08,076 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 16 states. [2020-10-28 09:29:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:08,364 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2020-10-28 09:29:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:29:08,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-10-28 09:29:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:08,366 INFO L225 Difference]: With dead ends: 181 [2020-10-28 09:29:08,366 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 09:29:08,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:29:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 09:29:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2020-10-28 09:29:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 09:29:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-10-28 09:29:08,376 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 96 [2020-10-28 09:29:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:08,376 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-10-28 09:29:08,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:29:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-10-28 09:29:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 09:29:08,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:08,378 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:08,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:29:08,378 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 897739616, now seen corresponding path program 8 times [2020-10-28 09:29:08,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:08,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572113705] [2020-10-28 09:29:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:08,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:13,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:13,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 09:29:13,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:13,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:29:13,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:13,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:29:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:29:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 09:29:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:13,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:13,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:13,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:29:13,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:13,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:29:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:29:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:13,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:13,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 4 proven. 247 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-28 09:29:13,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572113705] [2020-10-28 09:29:13,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:13,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:29:13,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234328079] [2020-10-28 09:29:13,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:29:13,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:13,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:29:13,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:29:13,653 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 17 states. [2020-10-28 09:29:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:13,988 INFO L93 Difference]: Finished difference Result 189 states and 220 transitions. [2020-10-28 09:29:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:29:13,989 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-10-28 09:29:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:13,990 INFO L225 Difference]: With dead ends: 189 [2020-10-28 09:29:13,991 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 09:29:13,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:29:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 09:29:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2020-10-28 09:29:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 09:29:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2020-10-28 09:29:14,001 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 101 [2020-10-28 09:29:14,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:14,001 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2020-10-28 09:29:14,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:29:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2020-10-28 09:29:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 09:29:14,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:14,003 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:14,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:29:14,003 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:14,004 INFO L82 PathProgramCache]: Analyzing trace with hash -360795891, now seen corresponding path program 9 times [2020-10-28 09:29:14,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:14,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394329067] [2020-10-28 09:29:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:29:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:29:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 09:29:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:19,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:19,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:19,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:19,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:29:19,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:19,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:19,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:29:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:19,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:19,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:19,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:19,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:29:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:19,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:19,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:19,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:19,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 4 proven. 287 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-28 09:29:19,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394329067] [2020-10-28 09:29:19,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:19,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:29:19,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744058542] [2020-10-28 09:29:19,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:29:19,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:19,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:29:19,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:29:19,345 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 18 states. [2020-10-28 09:29:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:19,689 INFO L93 Difference]: Finished difference Result 197 states and 230 transitions. [2020-10-28 09:29:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:29:19,692 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 106 [2020-10-28 09:29:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:19,693 INFO L225 Difference]: With dead ends: 197 [2020-10-28 09:29:19,694 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 09:29:19,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:29:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 09:29:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2020-10-28 09:29:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 09:29:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2020-10-28 09:29:19,715 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 106 [2020-10-28 09:29:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:19,717 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2020-10-28 09:29:19,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:29:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2020-10-28 09:29:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 09:29:19,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:19,719 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:19,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:29:19,719 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:19,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:19,719 INFO L82 PathProgramCache]: Analyzing trace with hash -449569604, now seen corresponding path program 10 times [2020-10-28 09:29:19,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:19,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621766371] [2020-10-28 09:29:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:24,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:24,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 09:29:24,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 09:29:24,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:24,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:29:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:29:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 09:29:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:25,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:25,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:25,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 09:29:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:25,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:25,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:25,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:25,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:25,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:25,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:29:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:25,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:25,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:25,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:25,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:25,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 4 proven. 330 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-28 09:29:25,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621766371] [2020-10-28 09:29:25,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:25,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:29:25,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805937028] [2020-10-28 09:29:25,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:29:25,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:25,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:29:25,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:29:25,128 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 19 states. [2020-10-28 09:29:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:25,449 INFO L93 Difference]: Finished difference Result 205 states and 240 transitions. [2020-10-28 09:29:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:29:25,452 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-10-28 09:29:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:25,454 INFO L225 Difference]: With dead ends: 205 [2020-10-28 09:29:25,454 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 09:29:25,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:29:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 09:29:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2020-10-28 09:29:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 09:29:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2020-10-28 09:29:25,465 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 111 [2020-10-28 09:29:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:25,465 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2020-10-28 09:29:25,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:29:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2020-10-28 09:29:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 09:29:25,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:25,467 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:25,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:29:25,467 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1245601871, now seen corresponding path program 11 times [2020-10-28 09:29:25,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:25,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283333018] [2020-10-28 09:29:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 09:29:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 09:29:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:29:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:30,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:30,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:30,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:30,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:30,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:29:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:30,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:30,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:30,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:30,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:29:30,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:30,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:30,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:30,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:30,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:30,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-28 09:29:30,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283333018] [2020-10-28 09:29:30,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:30,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:29:30,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384810744] [2020-10-28 09:29:30,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:29:30,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:30,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:29:30,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:29:30,841 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand 20 states. [2020-10-28 09:29:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:31,207 INFO L93 Difference]: Finished difference Result 213 states and 250 transitions. [2020-10-28 09:29:31,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:29:31,207 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-10-28 09:29:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:31,209 INFO L225 Difference]: With dead ends: 213 [2020-10-28 09:29:31,209 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 09:29:31,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:29:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 09:29:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2020-10-28 09:29:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 09:29:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2020-10-28 09:29:31,220 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 116 [2020-10-28 09:29:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:31,221 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2020-10-28 09:29:31,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:29:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2020-10-28 09:29:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 09:29:31,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:31,222 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:31,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:29:31,223 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:31,223 INFO L82 PathProgramCache]: Analyzing trace with hash -966722024, now seen corresponding path program 12 times [2020-10-28 09:29:31,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:31,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755108589] [2020-10-28 09:29:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:31,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:36,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:36,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 09:29:36,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 09:29:36,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:36,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:29:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 09:29:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 09:29:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:36,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:36,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:36,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:29:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:29:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:36,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:36,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:36,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:36,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:36,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:36,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 4 proven. 425 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-28 09:29:36,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755108589] [2020-10-28 09:29:36,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:36,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:29:36,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938922860] [2020-10-28 09:29:36,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:29:36,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:36,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:29:36,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:29:36,656 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand 21 states. [2020-10-28 09:29:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:36,990 INFO L93 Difference]: Finished difference Result 221 states and 260 transitions. [2020-10-28 09:29:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:29:36,990 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 121 [2020-10-28 09:29:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:36,991 INFO L225 Difference]: With dead ends: 221 [2020-10-28 09:29:36,992 INFO L226 Difference]: Without dead ends: 135 [2020-10-28 09:29:36,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:29:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-28 09:29:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2020-10-28 09:29:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-28 09:29:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2020-10-28 09:29:37,004 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 121 [2020-10-28 09:29:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:37,005 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2020-10-28 09:29:37,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:29:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2020-10-28 09:29:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 09:29:37,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:37,006 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:37,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:29:37,007 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:37,007 INFO L82 PathProgramCache]: Analyzing trace with hash 552631893, now seen corresponding path program 13 times [2020-10-28 09:29:37,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:37,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183269590] [2020-10-28 09:29:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 09:29:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 09:29:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:42,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:29:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 09:29:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:29:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:42,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:42,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:42,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:42,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:42,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:29:42,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:42,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:29:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:42,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 09:29:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:42,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:42,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:42,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:42,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:42,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:42,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 4 proven. 477 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2020-10-28 09:29:42,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183269590] [2020-10-28 09:29:42,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:42,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:29:42,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41269339] [2020-10-28 09:29:42,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:29:42,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:42,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:29:42,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:29:42,489 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand 22 states. [2020-10-28 09:29:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:42,904 INFO L93 Difference]: Finished difference Result 229 states and 270 transitions. [2020-10-28 09:29:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:29:42,904 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2020-10-28 09:29:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:42,906 INFO L225 Difference]: With dead ends: 229 [2020-10-28 09:29:42,906 INFO L226 Difference]: Without dead ends: 140 [2020-10-28 09:29:42,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:29:42,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-28 09:29:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2020-10-28 09:29:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-28 09:29:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2020-10-28 09:29:42,922 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 126 [2020-10-28 09:29:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:42,922 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2020-10-28 09:29:42,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:29:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2020-10-28 09:29:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 09:29:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:42,923 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:42,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:29:42,924 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1281699980, now seen corresponding path program 14 times [2020-10-28 09:29:42,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:42,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563199485] [2020-10-28 09:29:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 09:29:48,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 09:29:48,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:29:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 09:29:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 09:29:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:48,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:48,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:48,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:29:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:29:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 4 proven. 532 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-10-28 09:29:48,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563199485] [2020-10-28 09:29:48,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:48,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:29:48,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024689366] [2020-10-28 09:29:48,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:29:48,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:48,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:29:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:29:48,405 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand 23 states. [2020-10-28 09:29:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:48,850 INFO L93 Difference]: Finished difference Result 237 states and 280 transitions. [2020-10-28 09:29:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:29:48,850 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 131 [2020-10-28 09:29:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:48,853 INFO L225 Difference]: With dead ends: 237 [2020-10-28 09:29:48,853 INFO L226 Difference]: Without dead ends: 145 [2020-10-28 09:29:48,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:29:48,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-28 09:29:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2020-10-28 09:29:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 09:29:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-10-28 09:29:48,865 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 131 [2020-10-28 09:29:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:48,865 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-10-28 09:29:48,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:29:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-10-28 09:29:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 09:29:48,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:48,867 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:48,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:29:48,867 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:48,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1530498297, now seen corresponding path program 15 times [2020-10-28 09:29:48,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:48,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237627900] [2020-10-28 09:29:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:29:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 09:29:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 09:29:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:29:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:29:54,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:29:54,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:29:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:29:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:54,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 09:29:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:29:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:29:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:29:54,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:29:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2020-10-28 09:29:54,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237627900] [2020-10-28 09:29:54,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:29:54,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:29:54,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119238670] [2020-10-28 09:29:54,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:29:54,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:29:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:29:54,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:29:54,372 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand 24 states. [2020-10-28 09:29:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:29:54,820 INFO L93 Difference]: Finished difference Result 245 states and 290 transitions. [2020-10-28 09:29:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:29:54,821 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 136 [2020-10-28 09:29:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:29:54,823 INFO L225 Difference]: With dead ends: 245 [2020-10-28 09:29:54,823 INFO L226 Difference]: Without dead ends: 150 [2020-10-28 09:29:54,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:29:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-28 09:29:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2020-10-28 09:29:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 09:29:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2020-10-28 09:29:54,836 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 136 [2020-10-28 09:29:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:29:54,836 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2020-10-28 09:29:54,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:29:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2020-10-28 09:29:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 09:29:54,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:29:54,838 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:29:54,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:29:54,838 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:29:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:29:54,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1794330832, now seen corresponding path program 16 times [2020-10-28 09:29:54,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:29:54,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901433876] [2020-10-28 09:29:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:29:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:29:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:29:59,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:29:59,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 09:29:59,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:29:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 09:29:59,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:29:59,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:29:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:29:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 09:29:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 09:29:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:00,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:00,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:00,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:00,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:00,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 09:30:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:00,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:00,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:00,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:00,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:30:00,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:00,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:00,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:30:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:00,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:00,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:00,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 4 proven. 651 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 09:30:00,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901433876] [2020-10-28 09:30:00,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:00,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:30:00,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543211149] [2020-10-28 09:30:00,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:30:00,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:00,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:30:00,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:30:00,404 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand 25 states. [2020-10-28 09:30:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:00,816 INFO L93 Difference]: Finished difference Result 253 states and 300 transitions. [2020-10-28 09:30:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:30:00,817 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 141 [2020-10-28 09:30:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:00,819 INFO L225 Difference]: With dead ends: 253 [2020-10-28 09:30:00,819 INFO L226 Difference]: Without dead ends: 155 [2020-10-28 09:30:00,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:30:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-28 09:30:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2020-10-28 09:30:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-28 09:30:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 175 transitions. [2020-10-28 09:30:00,832 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 175 transitions. Word has length 141 [2020-10-28 09:30:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:00,832 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 175 transitions. [2020-10-28 09:30:00,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:30:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 175 transitions. [2020-10-28 09:30:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 09:30:00,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:00,833 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:00,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:30:00,834 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1035269219, now seen corresponding path program 17 times [2020-10-28 09:30:00,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:00,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688787843] [2020-10-28 09:30:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:00,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5243 [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 09:30:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 09:30:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:06,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:06,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:06,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:06,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:06,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:06,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:06,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:30:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:06,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:06,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:06,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:06,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:06,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 09:30:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:06,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:06,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:06,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:06,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:06,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 4 proven. 715 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2020-10-28 09:30:06,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688787843] [2020-10-28 09:30:06,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:06,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:30:06,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813383253] [2020-10-28 09:30:06,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:30:06,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:06,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:30:06,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:30:06,633 INFO L87 Difference]: Start difference. First operand 152 states and 175 transitions. Second operand 26 states. [2020-10-28 09:30:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:07,120 INFO L93 Difference]: Finished difference Result 261 states and 310 transitions. [2020-10-28 09:30:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:30:07,120 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2020-10-28 09:30:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:07,122 INFO L225 Difference]: With dead ends: 261 [2020-10-28 09:30:07,122 INFO L226 Difference]: Without dead ends: 160 [2020-10-28 09:30:07,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:30:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-28 09:30:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2020-10-28 09:30:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-28 09:30:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 181 transitions. [2020-10-28 09:30:07,134 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 181 transitions. Word has length 146 [2020-10-28 09:30:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:07,134 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 181 transitions. [2020-10-28 09:30:07,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:30:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 181 transitions. [2020-10-28 09:30:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 09:30:07,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:07,136 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:07,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:30:07,136 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:07,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1778139692, now seen corresponding path program 18 times [2020-10-28 09:30:07,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:07,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861531382] [2020-10-28 09:30:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:12,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 09:30:12,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5327 [2020-10-28 09:30:12,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:12,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:30:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 09:30:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 09:30:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:13,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:30:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:13,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:30:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 09:30:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:13,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:13,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:13,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:13,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:30:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:30:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:13,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:13,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:13,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:13,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:13,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:30:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 4 proven. 782 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-28 09:30:13,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861531382] [2020-10-28 09:30:13,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:13,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:30:13,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133625776] [2020-10-28 09:30:13,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:30:13,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:13,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:30:13,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:30:13,126 INFO L87 Difference]: Start difference. First operand 157 states and 181 transitions. Second operand 27 states. [2020-10-28 09:30:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:13,589 INFO L93 Difference]: Finished difference Result 269 states and 320 transitions. [2020-10-28 09:30:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:30:13,591 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 151 [2020-10-28 09:30:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:13,592 INFO L225 Difference]: With dead ends: 269 [2020-10-28 09:30:13,592 INFO L226 Difference]: Without dead ends: 165 [2020-10-28 09:30:13,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:30:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-28 09:30:13,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2020-10-28 09:30:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-28 09:30:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2020-10-28 09:30:13,611 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 151 [2020-10-28 09:30:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:13,611 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2020-10-28 09:30:13,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:30:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2020-10-28 09:30:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 09:30:13,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:13,613 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:13,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:30:13,614 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:13,615 INFO L82 PathProgramCache]: Analyzing trace with hash 106117697, now seen corresponding path program 19 times [2020-10-28 09:30:13,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:13,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142913761] [2020-10-28 09:30:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:13,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:19,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:19,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5354 [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:30:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:19,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:19,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:19,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:19,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:30:19,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:19,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-28 09:30:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:19,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:19,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:19,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:19,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:19,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:19,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:19,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 09:30:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:19,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1447 backedges. 4 proven. 852 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2020-10-28 09:30:19,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142913761] [2020-10-28 09:30:19,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:19,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:30:19,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094879870] [2020-10-28 09:30:19,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:30:19,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:19,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:30:19,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:30:19,603 INFO L87 Difference]: Start difference. First operand 162 states and 187 transitions. Second operand 28 states. [2020-10-28 09:30:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:20,019 INFO L93 Difference]: Finished difference Result 277 states and 330 transitions. [2020-10-28 09:30:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:30:20,020 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 156 [2020-10-28 09:30:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:20,021 INFO L225 Difference]: With dead ends: 277 [2020-10-28 09:30:20,021 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 09:30:20,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:30:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 09:30:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-28 09:30:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-28 09:30:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2020-10-28 09:30:20,042 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 156 [2020-10-28 09:30:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:20,042 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2020-10-28 09:30:20,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:30:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2020-10-28 09:30:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 09:30:20,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:20,043 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:20,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:30:20,044 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:20,044 INFO L82 PathProgramCache]: Analyzing trace with hash -909679736, now seen corresponding path program 20 times [2020-10-28 09:30:20,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:20,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362296663] [2020-10-28 09:30:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:25,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 09:30:25,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-28 09:30:25,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:25,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:30:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 09:30:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 09:30:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:25,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:25,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:25,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:25,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 09:30:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:25,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:25,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:25,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:25,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:30:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:25,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:25,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 4 proven. 925 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2020-10-28 09:30:25,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362296663] [2020-10-28 09:30:25,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:25,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:30:25,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834556792] [2020-10-28 09:30:25,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:30:25,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:25,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:30:25,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:30:25,901 INFO L87 Difference]: Start difference. First operand 167 states and 193 transitions. Second operand 29 states. [2020-10-28 09:30:26,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:26,439 INFO L93 Difference]: Finished difference Result 285 states and 340 transitions. [2020-10-28 09:30:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:30:26,439 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 161 [2020-10-28 09:30:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:26,441 INFO L225 Difference]: With dead ends: 285 [2020-10-28 09:30:26,441 INFO L226 Difference]: Without dead ends: 175 [2020-10-28 09:30:26,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:30:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-28 09:30:26,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2020-10-28 09:30:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-28 09:30:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 199 transitions. [2020-10-28 09:30:26,454 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 199 transitions. Word has length 161 [2020-10-28 09:30:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:26,454 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 199 transitions. [2020-10-28 09:30:26,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:30:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 199 transitions. [2020-10-28 09:30:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 09:30:26,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:26,455 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:26,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:30:26,456 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:26,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1308645605, now seen corresponding path program 21 times [2020-10-28 09:30:26,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:26,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80750501] [2020-10-28 09:30:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 09:30:31,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-28 09:30:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:31,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:30:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 09:30:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 09:30:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:32,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:32,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:32,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:32,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:32,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:30:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:32,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:32,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:32,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:32,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:32,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-28 09:30:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:32,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:32,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:32,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 4 proven. 1001 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2020-10-28 09:30:32,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80750501] [2020-10-28 09:30:32,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:32,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:30:32,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892042250] [2020-10-28 09:30:32,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:30:32,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:30:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:30:32,334 INFO L87 Difference]: Start difference. First operand 172 states and 199 transitions. Second operand 30 states. [2020-10-28 09:30:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:32,910 INFO L93 Difference]: Finished difference Result 293 states and 350 transitions. [2020-10-28 09:30:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:30:32,911 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 166 [2020-10-28 09:30:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:32,913 INFO L225 Difference]: With dead ends: 293 [2020-10-28 09:30:32,913 INFO L226 Difference]: Without dead ends: 180 [2020-10-28 09:30:32,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:30:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-28 09:30:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2020-10-28 09:30:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-28 09:30:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2020-10-28 09:30:32,927 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 166 [2020-10-28 09:30:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:32,927 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2020-10-28 09:30:32,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:30:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2020-10-28 09:30:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 09:30:32,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:32,929 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:32,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:30:32,929 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:32,929 INFO L82 PathProgramCache]: Analyzing trace with hash 451310820, now seen corresponding path program 22 times [2020-10-28 09:30:32,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:32,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648114096] [2020-10-28 09:30:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:38,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 09:30:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:38,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:38,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:38,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:30:38,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:38,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:38,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:38,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 09:30:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:38,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:38,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:38,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:38,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:38,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 09:30:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:38,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:38,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:38,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:38,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:38,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:38,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:38,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 4 proven. 1080 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2020-10-28 09:30:38,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648114096] [2020-10-28 09:30:38,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:38,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:30:38,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329873977] [2020-10-28 09:30:38,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:30:38,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:38,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:30:38,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:30:38,768 INFO L87 Difference]: Start difference. First operand 177 states and 205 transitions. Second operand 31 states. [2020-10-28 09:30:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:39,330 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2020-10-28 09:30:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:30:39,331 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 171 [2020-10-28 09:30:39,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:39,333 INFO L225 Difference]: With dead ends: 301 [2020-10-28 09:30:39,333 INFO L226 Difference]: Without dead ends: 185 [2020-10-28 09:30:39,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:30:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-28 09:30:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2020-10-28 09:30:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-28 09:30:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-10-28 09:30:39,348 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 171 [2020-10-28 09:30:39,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:39,348 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-10-28 09:30:39,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:30:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-10-28 09:30:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 09:30:39,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:39,350 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:39,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:30:39,350 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:39,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:39,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1518380937, now seen corresponding path program 23 times [2020-10-28 09:30:39,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:39,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787083718] [2020-10-28 09:30:39,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:44,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 09:30:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:45,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:45,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:45,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 09:30:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:45,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:45,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 09:30:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:45,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 4 proven. 1162 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2020-10-28 09:30:45,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787083718] [2020-10-28 09:30:45,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:45,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:30:45,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007592629] [2020-10-28 09:30:45,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:30:45,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:45,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:30:45,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:30:45,232 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 32 states. [2020-10-28 09:30:45,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:45,835 INFO L93 Difference]: Finished difference Result 309 states and 370 transitions. [2020-10-28 09:30:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:30:45,835 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 176 [2020-10-28 09:30:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:45,837 INFO L225 Difference]: With dead ends: 309 [2020-10-28 09:30:45,837 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 09:30:45,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:30:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 09:30:45,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2020-10-28 09:30:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-28 09:30:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 217 transitions. [2020-10-28 09:30:45,851 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 217 transitions. Word has length 176 [2020-10-28 09:30:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:45,851 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 217 transitions. [2020-10-28 09:30:45,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:30:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 217 transitions. [2020-10-28 09:30:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-28 09:30:45,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:45,853 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:45,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:30:45,853 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:45,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1097545280, now seen corresponding path program 24 times [2020-10-28 09:30:45,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:45,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184021804] [2020-10-28 09:30:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 09:30:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:51,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:51,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:51,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:30:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:51,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:51,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 09:30:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:51,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:51,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:30:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:51,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-28 09:30:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:51,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:51,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:51,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:30:51,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:51,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 4 proven. 1247 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2020-10-28 09:30:51,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184021804] [2020-10-28 09:30:51,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:51,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:30:51,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247049243] [2020-10-28 09:30:51,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:30:51,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:51,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:30:51,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:30:51,816 INFO L87 Difference]: Start difference. First operand 187 states and 217 transitions. Second operand 33 states. [2020-10-28 09:30:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:52,456 INFO L93 Difference]: Finished difference Result 317 states and 380 transitions. [2020-10-28 09:30:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:30:52,457 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 181 [2020-10-28 09:30:52,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:52,459 INFO L225 Difference]: With dead ends: 317 [2020-10-28 09:30:52,459 INFO L226 Difference]: Without dead ends: 195 [2020-10-28 09:30:52,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:30:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-28 09:30:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2020-10-28 09:30:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-28 09:30:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 223 transitions. [2020-10-28 09:30:52,473 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 223 transitions. Word has length 181 [2020-10-28 09:30:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:52,474 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 223 transitions. [2020-10-28 09:30:52,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:30:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 223 transitions. [2020-10-28 09:30:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-28 09:30:52,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:52,475 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:52,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:30:52,475 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:52,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1417517523, now seen corresponding path program 25 times [2020-10-28 09:30:52,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:52,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467537181] [2020-10-28 09:30:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:57,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:57,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 09:30:57,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:30:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5226 [2020-10-28 09:30:57,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:57,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:30:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 09:30:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 09:30:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:30:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:58,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:30:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:58,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-28 09:30:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:58,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:30:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:30:58,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:30:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:30:58,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:30:58,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:30:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:30:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:30:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:30:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:30:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 4 proven. 1335 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2020-10-28 09:30:58,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467537181] [2020-10-28 09:30:58,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:30:58,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:30:58,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618740408] [2020-10-28 09:30:58,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:30:58,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:30:58,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:30:58,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:30:58,608 INFO L87 Difference]: Start difference. First operand 192 states and 223 transitions. Second operand 34 states. [2020-10-28 09:30:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:30:59,129 INFO L93 Difference]: Finished difference Result 325 states and 390 transitions. [2020-10-28 09:30:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:30:59,129 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 186 [2020-10-28 09:30:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:30:59,131 INFO L225 Difference]: With dead ends: 325 [2020-10-28 09:30:59,131 INFO L226 Difference]: Without dead ends: 200 [2020-10-28 09:30:59,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:30:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-28 09:30:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2020-10-28 09:30:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-28 09:30:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2020-10-28 09:30:59,145 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 186 [2020-10-28 09:30:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:30:59,145 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2020-10-28 09:30:59,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:30:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2020-10-28 09:30:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-28 09:30:59,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:30:59,147 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:30:59,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:30:59,147 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:30:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:30:59,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1357342620, now seen corresponding path program 26 times [2020-10-28 09:30:59,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:30:59,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720226642] [2020-10-28 09:30:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:30:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:30:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:30:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5172 [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 09:31:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 09:31:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:31:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:05,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:05,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:31:05,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:31:05,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:05,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-28 09:31:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:05,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:05,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:05,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:05,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:31:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:31:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 09:31:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:05,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:05,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:05,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:31:05,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:05,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:31:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:05,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2406 backedges. 4 proven. 1426 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2020-10-28 09:31:05,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720226642] [2020-10-28 09:31:05,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:31:05,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:31:05,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783651298] [2020-10-28 09:31:05,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:31:05,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:31:05,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:31:05,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:31:05,244 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand 35 states. [2020-10-28 09:31:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:31:05,788 INFO L93 Difference]: Finished difference Result 333 states and 400 transitions. [2020-10-28 09:31:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:31:05,788 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 191 [2020-10-28 09:31:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:31:05,790 INFO L225 Difference]: With dead ends: 333 [2020-10-28 09:31:05,790 INFO L226 Difference]: Without dead ends: 205 [2020-10-28 09:31:05,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:31:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-28 09:31:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2020-10-28 09:31:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 09:31:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-10-28 09:31:05,805 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 191 [2020-10-28 09:31:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:31:05,805 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-10-28 09:31:05,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:31:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-10-28 09:31:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-28 09:31:05,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:31:05,807 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:31:05,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:31:05,807 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:31:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:31:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1556884271, now seen corresponding path program 27 times [2020-10-28 09:31:05,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:31:05,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852750384] [2020-10-28 09:31:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:31:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:06,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:10,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:10,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-28 09:31:10,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:31:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:31:10,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:10,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:31:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 09:31:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 09:31:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:11,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:31:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:11,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:11,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:31:11,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:31:11,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:11,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:11,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-28 09:31:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:11,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:11,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:11,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:31:11,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:11,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:31:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 09:31:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:11,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:11,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:11,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:11,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:31:11,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:11,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:31:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 4 proven. 1520 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2020-10-28 09:31:11,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852750384] [2020-10-28 09:31:11,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:31:11,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:31:11,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779506559] [2020-10-28 09:31:11,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:31:11,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:31:11,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:31:11,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:31:11,857 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 36 states. [2020-10-28 09:31:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:31:12,533 INFO L93 Difference]: Finished difference Result 341 states and 410 transitions. [2020-10-28 09:31:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:31:12,533 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 196 [2020-10-28 09:31:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:31:12,535 INFO L225 Difference]: With dead ends: 341 [2020-10-28 09:31:12,535 INFO L226 Difference]: Without dead ends: 210 [2020-10-28 09:31:12,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:31:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-28 09:31:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2020-10-28 09:31:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-28 09:31:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 241 transitions. [2020-10-28 09:31:12,552 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 241 transitions. Word has length 196 [2020-10-28 09:31:12,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:31:12,553 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 241 transitions. [2020-10-28 09:31:12,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:31:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 241 transitions. [2020-10-28 09:31:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-28 09:31:12,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:31:12,555 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:31:12,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:31:12,555 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:31:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:31:12,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1751959800, now seen corresponding path program 28 times [2020-10-28 09:31:12,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:31:12,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666684661] [2020-10-28 09:31:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:31:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:17,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:17,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-28 09:31:17,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:31:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5330 [2020-10-28 09:31:17,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:17,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 09:31:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 09:31:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 09:31:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:18,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:31:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:18,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:31:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:31:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:18,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:31:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:18,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 09:31:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-28 09:31:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:18,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:31:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:31:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 4 proven. 1617 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-10-28 09:31:18,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666684661] [2020-10-28 09:31:18,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:31:18,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 09:31:18,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859117231] [2020-10-28 09:31:18,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 09:31:18,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:31:18,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 09:31:18,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:31:18,955 INFO L87 Difference]: Start difference. First operand 207 states and 241 transitions. Second operand 37 states. [2020-10-28 09:31:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:31:19,544 INFO L93 Difference]: Finished difference Result 349 states and 420 transitions. [2020-10-28 09:31:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:31:19,545 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 201 [2020-10-28 09:31:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:31:19,547 INFO L225 Difference]: With dead ends: 349 [2020-10-28 09:31:19,547 INFO L226 Difference]: Without dead ends: 215 [2020-10-28 09:31:19,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:31:19,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-28 09:31:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2020-10-28 09:31:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-28 09:31:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 247 transitions. [2020-10-28 09:31:19,561 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 247 transitions. Word has length 201 [2020-10-28 09:31:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:31:19,561 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 247 transitions. [2020-10-28 09:31:19,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 09:31:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 247 transitions. [2020-10-28 09:31:19,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-28 09:31:19,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:31:19,563 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:31:19,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:31:19,563 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:31:19,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:31:19,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1438436491, now seen corresponding path program 29 times [2020-10-28 09:31:19,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:31:19,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086448541] [2020-10-28 09:31:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:31:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:31:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:31:24,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 09:31:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0