/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-fpi/res2o.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:54:45,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:54:45,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:54:45,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:54:45,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:54:45,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:54:45,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:54:45,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:54:45,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:54:45,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:54:45,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:54:45,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:54:45,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:54:45,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:54:45,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:54:45,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:54:45,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:54:45,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:54:45,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:54:45,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:54:45,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:54:45,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:54:45,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:54:45,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:54:45,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:54:45,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:54:45,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:54:45,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:54:45,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:54:45,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:54:45,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:54:45,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:54:45,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:54:45,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:54:45,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:54:45,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:54:45,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:54:45,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:54:45,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:54:45,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:54:45,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:54:45,986 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 [2020-10-29 03:54:46,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:54:46,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:54:46,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:54:46,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:54:46,023 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:54:46,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:54:46,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:54:46,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:54:46,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:54:46,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:54:46,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:54:46,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:54:46,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:54:46,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:54:46,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:54:46,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:54:46,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:54:46,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:54:46,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:54:46,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:54:46,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:54:46,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:54:46,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:54:46,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:54:46,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:54:46,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:54:46,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:54:46,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:54:46,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:54:46,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:54:46,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:54:46,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:54:46,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:54:46,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:54:46,568 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:54:46,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2o.c [2020-10-29 03:54:46,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f91b6fed/6d829c80f10240e488747a46646f1fd8/FLAGfcbfd0b00 [2020-10-29 03:54:47,458 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:54:47,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2o.c [2020-10-29 03:54:47,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f91b6fed/6d829c80f10240e488747a46646f1fd8/FLAGfcbfd0b00 [2020-10-29 03:54:47,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f91b6fed/6d829c80f10240e488747a46646f1fd8 [2020-10-29 03:54:47,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:54:47,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:54:47,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:47,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:54:47,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:54:47,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:47" (1/1) ... [2020-10-29 03:54:47,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a20cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:47, skipping insertion in model container [2020-10-29 03:54:47,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:47" (1/1) ... [2020-10-29 03:54:47,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:54:47,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:54:48,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:48,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:54:48,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:48,186 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:54:48,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48 WrapperNode [2020-10-29 03:54:48,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:48,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:54:48,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:54:48,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:54:48,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (1/1) ... [2020-10-29 03:54:48,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (1/1) ... [2020-10-29 03:54:48,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (1/1) ... [2020-10-29 03:54:48,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (1/1) ... [2020-10-29 03:54:48,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (1/1) ... [2020-10-29 03:54:48,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (1/1) ... [2020-10-29 03:54:48,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (1/1) ... [2020-10-29 03:54:48,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:54:48,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:54:48,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:54:48,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:54:48,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (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 [2020-10-29 03:54:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:54:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:54:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:54:48,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:54:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:54:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:54:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:54:49,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:54:49,183 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 03:54:49,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:49 BoogieIcfgContainer [2020-10-29 03:54:49,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:54:49,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:54:49,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:54:49,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:54:49,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:54:47" (1/3) ... [2020-10-29 03:54:49,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb0f907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:49, skipping insertion in model container [2020-10-29 03:54:49,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:48" (2/3) ... [2020-10-29 03:54:49,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb0f907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:49, skipping insertion in model container [2020-10-29 03:54:49,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:49" (3/3) ... [2020-10-29 03:54:49,197 INFO L111 eAbstractionObserver]: Analyzing ICFG res2o.c [2020-10-29 03:54:49,211 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:54:49,217 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:54:49,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:54:49,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:54:49,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:54:49,263 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:54:49,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:54:49,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:54:49,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:54:49,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:54:49,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:54:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-29 03:54:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:54:49,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:49,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:49,292 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:49,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1686177906, now seen corresponding path program 1 times [2020-10-29 03:54:49,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:49,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243725291] [2020-10-29 03:54:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:53,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:53,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:54:53,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:54:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3915 [2020-10-29 03:54:53,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:53,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:54:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:54:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:54:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:54:53,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:53,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:53,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:53,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:54:53,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:53,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:53,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:53,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:53,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:53,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:54:53,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:53,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:53,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:53,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243725291] [2020-10-29 03:54:53,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:54:53,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:54:53,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608716943] [2020-10-29 03:54:53,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:54:53,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:53,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:54:53,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:54:53,804 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 8 states. [2020-10-29 03:54:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:54,672 INFO L93 Difference]: Finished difference Result 103 states and 144 transitions. [2020-10-29 03:54:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:54:54,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-29 03:54:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:54,684 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:54:54,684 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:54:54,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:54:54,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:54:54,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-29 03:54:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:54:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-10-29 03:54:54,742 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 30 [2020-10-29 03:54:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-10-29 03:54:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:54:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-10-29 03:54:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:54:54,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:54,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:54,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:54:54,746 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash 848406342, now seen corresponding path program 1 times [2020-10-29 03:54:54,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:54,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716752824] [2020-10-29 03:54:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:54:58,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:54:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3804 [2020-10-29 03:54:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:54:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:54:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:54:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:58,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:54:58,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:58,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:54:58,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716752824] [2020-10-29 03:54:58,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:54:58,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:54:58,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129980138] [2020-10-29 03:54:58,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:54:58,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:58,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:54:58,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:54:58,718 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 5 states. [2020-10-29 03:54:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:58,978 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2020-10-29 03:54:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:54:58,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-29 03:54:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:58,980 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:54:58,981 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 03:54:58,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:54:58,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 03:54:58,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-29 03:54:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:54:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-29 03:54:59,005 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 32 [2020-10-29 03:54:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:59,007 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-29 03:54:59,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:54:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-29 03:54:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:54:59,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:59,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:59,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:54:59,012 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1706440668, now seen corresponding path program 1 times [2020-10-29 03:54:59,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:59,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205307951] [2020-10-29 03:54:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:04,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:55:04,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:55:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:55:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:04,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:55:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:55:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:04,505 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-29 03:55:04,758 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-29 03:55:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:05,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:05,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:05,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205307951] [2020-10-29 03:55:05,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:05,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:55:05,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406109595] [2020-10-29 03:55:05,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:55:05,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:05,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:55:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:55:05,519 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 18 states. [2020-10-29 03:55:05,937 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-29 03:55:06,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:06,718 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-29 03:55:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:55:06,719 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-10-29 03:55:06,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:06,720 INFO L225 Difference]: With dead ends: 63 [2020-10-29 03:55:06,720 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:55:06,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:55:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:55:06,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-29 03:55:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:55:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-29 03:55:06,733 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 42 [2020-10-29 03:55:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:06,734 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-29 03:55:06,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:55:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-29 03:55:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:55:06,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:06,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:06,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:55:06,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:06,738 INFO L82 PathProgramCache]: Analyzing trace with hash -45011910, now seen corresponding path program 2 times [2020-10-29 03:55:06,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:06,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545044088] [2020-10-29 03:55:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:06,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:11,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:11,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:55:11,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:11,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:55:11,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:11,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:55:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:11,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:55:11,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:11,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:11,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:11,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 03:55:11,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:11,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:55:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:11,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:11,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:11,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:11,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:11,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:11,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:55:11,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545044088] [2020-10-29 03:55:11,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:11,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:55:11,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379885980] [2020-10-29 03:55:11,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:55:11,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:11,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:55:11,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:55:11,914 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 8 states. [2020-10-29 03:55:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:12,325 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2020-10-29 03:55:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:55:12,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-29 03:55:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:12,327 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:55:12,328 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:55:12,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:55:12,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:55:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-29 03:55:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:55:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-29 03:55:12,341 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 44 [2020-10-29 03:55:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:12,341 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-29 03:55:12,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:55:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-29 03:55:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:55:12,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:12,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:12,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:55:12,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:12,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1973604052, now seen corresponding path program 3 times [2020-10-29 03:55:12,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:12,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309835763] [2020-10-29 03:55:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:12,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:17,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:17,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:55:17,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:55:17,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:55:17,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:17,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:55:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:55:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:55:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:17,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:17,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:17,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:17,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:55:17,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:17,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:17,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:17,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:17,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:17,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:17,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:17,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:55:17,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309835763] [2020-10-29 03:55:17,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:17,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:55:17,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797481973] [2020-10-29 03:55:17,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:55:17,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:55:17,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:55:17,510 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 8 states. [2020-10-29 03:55:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:17,836 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-29 03:55:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:55:17,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-29 03:55:17,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:17,837 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:55:17,838 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:55:17,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:55:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:55:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-29 03:55:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:55:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-29 03:55:17,850 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 50 [2020-10-29 03:55:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:17,850 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-29 03:55:17,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:55:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-29 03:55:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:55:17,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:17,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:17,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:55:17,853 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:17,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1102906416, now seen corresponding path program 4 times [2020-10-29 03:55:17,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:17,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336789782] [2020-10-29 03:55:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:55:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:55:22,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:22,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:55:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:55:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:23,332 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-29 03:55:23,465 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-29 03:55:23,622 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-29 03:55:23,782 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-29 03:55:23,969 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 03:55:24,144 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-29 03:55:24,344 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-29 03:55:24,588 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-29 03:55:24,785 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-29 03:55:25,016 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-10-29 03:55:25,251 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-29 03:55:25,484 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-10-29 03:55:25,678 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-29 03:55:25,912 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-29 03:55:26,079 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-29 03:55:26,279 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-29 03:55:26,559 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-29 03:55:27,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:27,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:27,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:27,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:27,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:27,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:27,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:27,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:27,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:27,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:27,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:27,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336789782] [2020-10-29 03:55:27,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:27,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:55:27,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398446437] [2020-10-29 03:55:27,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:55:27,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:55:27,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:55:27,508 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 33 states. [2020-10-29 03:55:28,521 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 82 [2020-10-29 03:55:28,729 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 03:55:29,105 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-29 03:55:29,449 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-29 03:55:29,802 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-29 03:55:30,274 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 85 [2020-10-29 03:55:30,703 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2020-10-29 03:55:31,211 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-29 03:55:31,660 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2020-10-29 03:55:32,188 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 76 [2020-10-29 03:55:32,668 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 65 [2020-10-29 03:55:33,068 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2020-10-29 03:55:33,242 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-29 03:55:33,581 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2020-10-29 03:55:33,975 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-29 03:55:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:35,026 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-10-29 03:55:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:55:35,027 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 54 [2020-10-29 03:55:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:35,028 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:55:35,028 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:55:35,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=532, Invalid=3128, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:55:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:55:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2020-10-29 03:55:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:55:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-10-29 03:55:35,046 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 54 [2020-10-29 03:55:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:35,047 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-10-29 03:55:35,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:55:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-10-29 03:55:35,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:55:35,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:35,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:35,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:55:35,049 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2009445166, now seen corresponding path program 5 times [2020-10-29 03:55:35,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:35,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833230450] [2020-10-29 03:55:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:55:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:55:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:40,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:40,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:40,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:40,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:55:40,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:40,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:40,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:40,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:40,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:40,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:55:40,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833230450] [2020-10-29 03:55:40,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:40,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:55:40,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302294826] [2020-10-29 03:55:40,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:55:40,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:40,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:55:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:55:40,219 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 10 states. [2020-10-29 03:55:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:40,759 INFO L93 Difference]: Finished difference Result 184 states and 209 transitions. [2020-10-29 03:55:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:55:40,760 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-29 03:55:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:40,761 INFO L225 Difference]: With dead ends: 184 [2020-10-29 03:55:40,761 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:55:40,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:55:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:55:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 89. [2020-10-29 03:55:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:55:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-29 03:55:40,782 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 56 [2020-10-29 03:55:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:40,783 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-29 03:55:40,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:55:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-29 03:55:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:55:40,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:40,784 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:40,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:55:40,785 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:40,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2019224530, now seen corresponding path program 6 times [2020-10-29 03:55:40,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:40,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991454055] [2020-10-29 03:55:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:41,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:45,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:45,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:55:45,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:55:45,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:45,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:55:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:55:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:45,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:45,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:45,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:45,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:45,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:45,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:45,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:45,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:45,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:45,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:55:45,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991454055] [2020-10-29 03:55:45,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:45,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:55:45,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524578838] [2020-10-29 03:55:45,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:55:45,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:55:45,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:55:45,943 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 10 states. [2020-10-29 03:55:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:46,449 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2020-10-29 03:55:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:55:46,450 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-29 03:55:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:46,451 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:55:46,451 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:55:46,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:55:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:55:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 03:55:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:55:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-29 03:55:46,463 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 56 [2020-10-29 03:55:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:46,464 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-29 03:55:46,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:55:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-29 03:55:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:55:46,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:46,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:46,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:55:46,465 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:46,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1203093052, now seen corresponding path program 7 times [2020-10-29 03:55:46,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:46,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739781603] [2020-10-29 03:55:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:49,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:51,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:51,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:55:51,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:55:51,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5298 [2020-10-29 03:55:51,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:51,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:51,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:55:51,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:55:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:52,791 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-29 03:55:53,006 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-29 03:55:53,187 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-29 03:55:53,383 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2020-10-29 03:55:53,551 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-29 03:55:53,772 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-29 03:55:53,998 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-29 03:55:54,266 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2020-10-29 03:55:54,537 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2020-10-29 03:55:54,828 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2020-10-29 03:55:55,050 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-10-29 03:55:55,424 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2020-10-29 03:55:55,718 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2020-10-29 03:55:55,995 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-29 03:55:56,218 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-29 03:55:56,511 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-29 03:55:56,699 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-29 03:55:56,937 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-29 03:55:57,305 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-29 03:55:57,670 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-29 03:55:58,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:58,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:58,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:58,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:58,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:58,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:58,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:55:58,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:58,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:58,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739781603] [2020-10-29 03:55:58,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:58,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:55:58,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565661641] [2020-10-29 03:55:58,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:55:58,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:58,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:55:58,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1507, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:55:58,922 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 42 states. [2020-10-29 03:55:59,993 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-29 03:56:00,605 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-29 03:56:01,471 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 80 [2020-10-29 03:56:01,812 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-29 03:56:02,186 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2020-10-29 03:56:02,536 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2020-10-29 03:56:02,936 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 71 [2020-10-29 03:56:03,288 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-10-29 03:56:03,532 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-29 03:56:03,858 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2020-10-29 03:56:04,113 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-29 03:56:04,325 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-29 03:56:04,545 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-29 03:56:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:05,849 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-10-29 03:56:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:56:05,850 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 66 [2020-10-29 03:56:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:05,852 INFO L225 Difference]: With dead ends: 95 [2020-10-29 03:56:05,852 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:56:05,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=502, Invalid=3920, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 03:56:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:56:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2020-10-29 03:56:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:56:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2020-10-29 03:56:05,869 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 66 [2020-10-29 03:56:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:05,870 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2020-10-29 03:56:05,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:56:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2020-10-29 03:56:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:56:05,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:05,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:05,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:56:05,872 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:05,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:05,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1063240670, now seen corresponding path program 8 times [2020-10-29 03:56:05,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:05,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092264660] [2020-10-29 03:56:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:05,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:10,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:56:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:56:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:56:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:10,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:56:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:56:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:11,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:11,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:56:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:11,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:11,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:11,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:11,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:11,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:11,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:56:11,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092264660] [2020-10-29 03:56:11,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:11,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:56:11,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217516869] [2020-10-29 03:56:11,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:56:11,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:11,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:56:11,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:56:11,116 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 12 states. [2020-10-29 03:56:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:11,779 INFO L93 Difference]: Finished difference Result 194 states and 215 transitions. [2020-10-29 03:56:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:56:11,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-29 03:56:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:11,781 INFO L225 Difference]: With dead ends: 194 [2020-10-29 03:56:11,782 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:56:11,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:56:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:56:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2020-10-29 03:56:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:56:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-10-29 03:56:11,809 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 68 [2020-10-29 03:56:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:11,810 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-10-29 03:56:11,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:56:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-10-29 03:56:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:56:11,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:11,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:11,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:56:11,814 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:11,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1121071292, now seen corresponding path program 9 times [2020-10-29 03:56:11,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:11,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202533998] [2020-10-29 03:56:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:16,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:56:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:56:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:56:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:16,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:56:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:56:16,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:17,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:56:17,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:17,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:17,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:17,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 03:56:17,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202533998] [2020-10-29 03:56:17,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:17,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:56:17,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91357251] [2020-10-29 03:56:17,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:56:17,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:17,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:56:17,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:56:17,026 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 12 states. [2020-10-29 03:56:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:17,860 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-10-29 03:56:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:56:17,861 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-29 03:56:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:17,862 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:56:17,862 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:56:17,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:56:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:56:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-29 03:56:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:56:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-29 03:56:17,884 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 74 [2020-10-29 03:56:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:17,886 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-29 03:56:17,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:56:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-29 03:56:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:56:17,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:17,895 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:17,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:56:17,896 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2000488888, now seen corresponding path program 10 times [2020-10-29 03:56:17,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:17,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170844344] [2020-10-29 03:56:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:24,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:24,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:56:24,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:56:24,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6481 [2020-10-29 03:56:24,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:24,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:56:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:56:24,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:25,040 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-29 03:56:25,166 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-29 03:56:25,309 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-29 03:56:25,452 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-29 03:56:25,599 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-29 03:56:25,742 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-29 03:56:25,926 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-29 03:56:26,120 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-29 03:56:26,283 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-29 03:56:26,521 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-29 03:56:26,781 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-29 03:56:27,099 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2020-10-29 03:56:27,368 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2020-10-29 03:56:27,674 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2020-10-29 03:56:27,964 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2020-10-29 03:56:28,264 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2020-10-29 03:56:28,511 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-10-29 03:56:28,875 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2020-10-29 03:56:29,224 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2020-10-29 03:56:29,597 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 88 [2020-10-29 03:56:29,948 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 88 [2020-10-29 03:56:30,360 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 91 [2020-10-29 03:56:30,762 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 91 [2020-10-29 03:56:31,167 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 95 [2020-10-29 03:56:31,518 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2020-10-29 03:56:31,928 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-10-29 03:56:32,319 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2020-10-29 03:56:32,843 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 92 [2020-10-29 03:56:33,305 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 87 [2020-10-29 03:56:33,844 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 92 [2020-10-29 03:56:34,331 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 85 [2020-10-29 03:56:34,849 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 89 [2020-10-29 03:56:35,285 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2020-10-29 03:56:35,792 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-10-29 03:56:36,143 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-10-29 03:56:36,610 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-10-29 03:56:36,983 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-10-29 03:56:37,359 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-10-29 03:56:37,675 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-29 03:56:37,995 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-29 03:56:38,274 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-29 03:56:38,616 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-29 03:56:40,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:40,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:40,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:40,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:40,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 7 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:40,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170844344] [2020-10-29 03:56:40,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:40,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 03:56:40,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060677020] [2020-10-29 03:56:40,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 03:56:40,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:40,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 03:56:40,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2906, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:56:40,929 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 57 states. [2020-10-29 03:56:41,767 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-29 03:56:42,250 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-29 03:56:42,731 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-29 03:56:43,218 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2020-10-29 03:56:43,693 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-29 03:56:44,377 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 113 [2020-10-29 03:56:44,696 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-29 03:56:44,987 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-29 03:56:45,344 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-10-29 03:56:45,680 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-29 03:56:46,048 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-29 03:56:46,373 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-29 03:56:46,764 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-29 03:56:47,293 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-10-29 03:56:48,208 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 112 [2020-10-29 03:56:48,789 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-29 03:56:49,241 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2020-10-29 03:56:49,796 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2020-10-29 03:56:50,300 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2020-10-29 03:56:50,812 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2020-10-29 03:56:51,351 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2020-10-29 03:56:51,857 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 81 [2020-10-29 03:56:52,648 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 92 [2020-10-29 03:56:53,650 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 98 [2020-10-29 03:56:54,793 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 109 [2020-10-29 03:56:55,375 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 93 [2020-10-29 03:56:56,361 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 117 [2020-10-29 03:56:57,178 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 142 [2020-10-29 03:56:58,057 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 132 [2020-10-29 03:56:58,689 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 114 [2020-10-29 03:56:59,706 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 143 [2020-10-29 03:56:59,961 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-29 03:57:00,808 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 128 [2020-10-29 03:57:01,801 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 139 [2020-10-29 03:57:02,582 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2020-10-29 03:57:02,907 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 03:57:03,283 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-29 03:57:03,714 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2020-10-29 03:57:04,084 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-29 03:57:04,725 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-29 03:57:05,059 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 03:57:05,381 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-29 03:57:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:07,329 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2020-10-29 03:57:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-29 03:57:07,330 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 78 [2020-10-29 03:57:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:07,332 INFO L225 Difference]: With dead ends: 121 [2020-10-29 03:57:07,332 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:57:07,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=1120, Invalid=10870, Unknown=0, NotChecked=0, Total=11990 [2020-10-29 03:57:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:57:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-10-29 03:57:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 03:57:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-10-29 03:57:07,352 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 78 [2020-10-29 03:57:07,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:07,353 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-10-29 03:57:07,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 03:57:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-10-29 03:57:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:57:07,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:07,354 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:07,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:57:07,354 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:07,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1844328682, now seen corresponding path program 11 times [2020-10-29 03:57:07,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:07,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159754238] [2020-10-29 03:57:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:07,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:07,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:12,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:57:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:57:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:57:12,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:12,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:57:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:57:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:57:12,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:12,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:12,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:57:12,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:12,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:12,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:12,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:12,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:12,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:12,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-29 03:57:12,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159754238] [2020-10-29 03:57:12,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:12,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:57:12,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872251836] [2020-10-29 03:57:12,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:57:12,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:12,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:57:12,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:57:12,674 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 14 states. [2020-10-29 03:57:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:13,654 INFO L93 Difference]: Finished difference Result 228 states and 249 transitions. [2020-10-29 03:57:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:57:13,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-29 03:57:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:13,656 INFO L225 Difference]: With dead ends: 228 [2020-10-29 03:57:13,657 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:57:13,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:57:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:57:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-10-29 03:57:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:57:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-10-29 03:57:13,673 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 80 [2020-10-29 03:57:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:13,673 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-10-29 03:57:13,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:57:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-10-29 03:57:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:57:13,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:13,674 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:13,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:57:13,675 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:13,675 INFO L82 PathProgramCache]: Analyzing trace with hash -188672622, now seen corresponding path program 12 times [2020-10-29 03:57:13,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:13,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791133370] [2020-10-29 03:57:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:57:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:57:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:57:18,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:18,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:57:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:57:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:18,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:18,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:18,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:57:18,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:18,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:18,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:18,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:18,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:18,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:18,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 03:57:18,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791133370] [2020-10-29 03:57:18,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:18,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:57:18,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580829248] [2020-10-29 03:57:18,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:57:18,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:18,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:57:18,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:57:18,954 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 14 states. [2020-10-29 03:57:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:19,943 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-10-29 03:57:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:57:19,944 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-29 03:57:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:19,945 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:57:19,945 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:57:19,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:57:19,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:57:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-29 03:57:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:57:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-10-29 03:57:19,960 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 84 [2020-10-29 03:57:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:19,960 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-10-29 03:57:19,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:57:19,961 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-10-29 03:57:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:57:19,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:19,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:19,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:57:19,962 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:19,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1510757292, now seen corresponding path program 13 times [2020-10-29 03:57:19,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:19,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75150527] [2020-10-29 03:57:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:25,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:57:25,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:25,938 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-29 03:57:26,165 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-29 03:57:26,352 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2020-10-29 03:57:26,560 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2020-10-29 03:57:26,768 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-29 03:57:26,977 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-10-29 03:57:27,246 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-10-29 03:57:27,486 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-10-29 03:57:27,720 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-29 03:57:27,975 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-29 03:57:28,243 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-29 03:57:28,545 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2020-10-29 03:57:28,883 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-10-29 03:57:29,197 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-10-29 03:57:29,526 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2020-10-29 03:57:29,853 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2020-10-29 03:57:30,241 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2020-10-29 03:57:30,622 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2020-10-29 03:57:31,061 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2020-10-29 03:57:31,584 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 88 [2020-10-29 03:57:32,112 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2020-10-29 03:57:32,543 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2020-10-29 03:57:33,207 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 96 [2020-10-29 03:57:33,876 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 101 [2020-10-29 03:57:34,543 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 100 [2020-10-29 03:57:35,222 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 102 [2020-10-29 03:57:35,949 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 103 [2020-10-29 03:57:36,636 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 105 [2020-10-29 03:57:37,412 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 105 [2020-10-29 03:57:38,163 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 105 [2020-10-29 03:57:38,868 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 108 [2020-10-29 03:57:39,437 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 94 [2020-10-29 03:57:40,182 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 110 [2020-10-29 03:57:40,738 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2020-10-29 03:57:41,316 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 105 [2020-10-29 03:57:42,020 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 105 [2020-10-29 03:57:42,644 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2020-10-29 03:57:43,367 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 99 [2020-10-29 03:57:43,971 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 92 [2020-10-29 03:57:44,652 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 95 [2020-10-29 03:57:45,121 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2020-10-29 03:57:45,596 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2020-10-29 03:57:45,958 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-29 03:57:46,490 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-29 03:57:46,937 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2020-10-29 03:57:47,347 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-29 03:57:47,672 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-29 03:57:48,092 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-10-29 03:57:48,415 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-29 03:57:48,813 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-29 03:57:49,139 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-29 03:57:49,503 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-29 03:57:50,051 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-29 03:57:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:52,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:57:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:52,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:52,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:52,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:52,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:52,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:52,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 9 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:52,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75150527] [2020-10-29 03:57:52,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:52,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-29 03:57:52,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532018936] [2020-10-29 03:57:52,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-29 03:57:52,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:52,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-29 03:57:52,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=4257, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 03:57:52,862 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 69 states. [2020-10-29 03:57:53,870 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2020-10-29 03:57:54,448 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2020-10-29 03:57:55,096 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2020-10-29 03:57:55,758 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2020-10-29 03:57:56,713 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2020-10-29 03:57:58,106 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 115 [2020-10-29 03:57:58,670 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-29 03:57:59,044 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-29 03:57:59,526 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2020-10-29 03:57:59,960 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-10-29 03:58:00,481 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 65 [2020-10-29 03:58:00,997 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2020-10-29 03:58:01,553 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2020-10-29 03:58:02,087 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2020-10-29 03:58:02,698 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2020-10-29 03:58:03,341 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2020-10-29 03:58:04,285 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 81 [2020-10-29 03:58:04,936 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-29 03:58:06,675 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 281 DAG size of output: 136 [2020-10-29 03:58:07,567 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2020-10-29 03:58:08,286 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 96 [2020-10-29 03:58:09,208 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 100 [2020-10-29 03:58:10,043 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 96 [2020-10-29 03:58:10,879 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 94 [2020-10-29 03:58:11,316 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 70 [2020-10-29 03:58:12,154 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 100 [2020-10-29 03:58:12,453 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-29 03:58:13,472 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 98 [2020-10-29 03:58:13,861 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2020-10-29 03:58:14,841 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 101 [2020-10-29 03:58:15,157 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-29 03:58:16,296 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 100 [2020-10-29 03:58:16,732 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 63 [2020-10-29 03:58:17,988 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 108 [2020-10-29 03:58:18,340 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-29 03:58:20,492 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 267 DAG size of output: 102 [2020-10-29 03:58:20,985 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2020-10-29 03:58:22,719 WARN L193 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 109 [2020-10-29 03:58:23,184 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-29 03:58:24,477 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-10-29 03:58:25,417 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 101 [2020-10-29 03:58:27,271 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 192 DAG size of output: 125