/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:07:36,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:07:36,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:07:36,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:07:36,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:07:36,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:07:36,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:07:36,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:07:36,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:07:36,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:07:36,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:07:36,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:07:36,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:07:36,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:07:36,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:07:36,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:07:36,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:07:36,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:07:36,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:07:36,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:07:36,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:07:36,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:07:36,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:07:36,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:07:36,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:07:36,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:07:36,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:07:36,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:07:36,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:07:36,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:07:36,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:07:36,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:07:36,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:07:36,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:07:36,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:07:36,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:07:36,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:07:36,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:07:36,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:07:36,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:07:36,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:07:36,292 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 [2020-10-14 05:07:36,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:07:36,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:07:36,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:07:36,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:07:36,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:07:36,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:07:36,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:07:36,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:07:36,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:07:36,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:07:36,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:07:36,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:07:36,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:07:36,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:07:36,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:07:36,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:07:36,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:07:36,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:07:36,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:07:36,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:07:36,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:07:36,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:07:36,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:07:36,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:07:36,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:07:36,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:07:36,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:07:36,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:07:36,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:07:36,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:07:36,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:07:36,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:07:36,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:07:36,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:07:36,658 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:07:36,659 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2020-10-14 05:07:36,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f2e90a4d/1b62e613e6c64e4a9bc4eb158ac4a742/FLAG602cc970a [2020-10-14 05:07:37,176 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:07:37,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2020-10-14 05:07:37,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f2e90a4d/1b62e613e6c64e4a9bc4eb158ac4a742/FLAG602cc970a [2020-10-14 05:07:37,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f2e90a4d/1b62e613e6c64e4a9bc4eb158ac4a742 [2020-10-14 05:07:37,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:07:37,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:07:37,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:07:37,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:07:37,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:07:37,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:07:37" (1/1) ... [2020-10-14 05:07:37,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65eeb70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:37, skipping insertion in model container [2020-10-14 05:07:37,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:07:37" (1/1) ... [2020-10-14 05:07:37,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:07:37,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:07:38,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:07:38,137 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:07:38,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:07:38,244 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:07:38,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38 WrapperNode [2020-10-14 05:07:38,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:07:38,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:07:38,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:07:38,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:07:38,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (1/1) ... [2020-10-14 05:07:38,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (1/1) ... [2020-10-14 05:07:38,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (1/1) ... [2020-10-14 05:07:38,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (1/1) ... [2020-10-14 05:07:38,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (1/1) ... [2020-10-14 05:07:38,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (1/1) ... [2020-10-14 05:07:38,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (1/1) ... [2020-10-14 05:07:38,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:07:38,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:07:38,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:07:38,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:07:38,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (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 [2020-10-14 05:07:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:07:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:07:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:07:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:07:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:07:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:07:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-14 05:07:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-14 05:07:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2020-10-14 05:07:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:07:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:07:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:07:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:07:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:07:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:07:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:07:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:07:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:07:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:07:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:07:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:07:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:07:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:07:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:07:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:07:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:07:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:07:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:07:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:07:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:07:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:07:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:07:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:07:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:07:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:07:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:07:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:07:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:07:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:07:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:07:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:07:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:07:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:07:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:07:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:07:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:07:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:07:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:07:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:07:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:07:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:07:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:07:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:07:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:07:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:07:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:07:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:07:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:07:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:07:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:07:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:07:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:07:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:07:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:07:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:07:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:07:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:07:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:07:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:07:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:07:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:07:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:07:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:07:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:07:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:07:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:07:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:07:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:07:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:07:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:07:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:07:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:07:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:07:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:07:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:07:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:07:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:07:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:07:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:07:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:07:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:07:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:07:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:07:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:07:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:07:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:07:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:07:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:07:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:07:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:07:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-14 05:07:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-14 05:07:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:07:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2020-10-14 05:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:07:38,739 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:07:38,931 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:07:38,932 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 05:07:38,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:07:38 BoogieIcfgContainer [2020-10-14 05:07:38,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:07:38,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:07:38,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:07:38,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:07:38,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:07:37" (1/3) ... [2020-10-14 05:07:38,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240170af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:07:38, skipping insertion in model container [2020-10-14 05:07:38,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:38" (2/3) ... [2020-10-14 05:07:38,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240170af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:07:38, skipping insertion in model container [2020-10-14 05:07:38,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:07:38" (3/3) ... [2020-10-14 05:07:38,944 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2020-10-14 05:07:38,953 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:07:38,960 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:07:38,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:07:38,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:07:38,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:07:38,994 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:07:38,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:07:38,994 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:07:38,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:07:38,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:07:38,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:07:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-14 05:07:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:07:39,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:39,022 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] [2020-10-14 05:07:39,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1788681453, now seen corresponding path program 1 times [2020-10-14 05:07:39,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:39,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416940698] [2020-10-14 05:07:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:07:40,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:07:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-10-14 05:07:40,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:40,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 05:07:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:07:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:40,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:40,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:07:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:40,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:07:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:07:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:40,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:07:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:40,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:40,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:07:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:07:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:07:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:07:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:40,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:07:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:40,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:40,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:40,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:07:40,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:40,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:07:40,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416940698] [2020-10-14 05:07:40,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:40,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:07:40,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436931340] [2020-10-14 05:07:40,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:07:40,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:40,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:07:40,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:07:40,605 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2020-10-14 05:07:40,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:40,810 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2020-10-14 05:07:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:07:40,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 05:07:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:40,825 INFO L225 Difference]: With dead ends: 99 [2020-10-14 05:07:40,826 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 05:07:40,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:07:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 05:07:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-14 05:07:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:07:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-14 05:07:40,884 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 31 [2020-10-14 05:07:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:40,885 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-14 05:07:40,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:07:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-14 05:07:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:07:40,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:40,887 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] [2020-10-14 05:07:40,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:07:40,887 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1747123946, now seen corresponding path program 1 times [2020-10-14 05:07:40,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:40,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625478340] [2020-10-14 05:07:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:42,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:07:42,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:07:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-10-14 05:07:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:42,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 05:07:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:07:42,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:42,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:42,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:42,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:42,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:42,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:42,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:42,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:07:42,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:42,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:42,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:07:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:42,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:07:42,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:42,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:07:42,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:42,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:07:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:07:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:42,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:07:42,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625478340] [2020-10-14 05:07:42,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:42,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:07:42,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362238058] [2020-10-14 05:07:42,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:07:42,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:42,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:07:42,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:07:42,275 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2020-10-14 05:07:42,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:42,483 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-14 05:07:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:07:42,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-14 05:07:42,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:42,486 INFO L225 Difference]: With dead ends: 56 [2020-10-14 05:07:42,486 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:07:42,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:07:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:07:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-14 05:07:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:07:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-14 05:07:42,497 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-10-14 05:07:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:42,497 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-14 05:07:42,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:07:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-14 05:07:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:07:42,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:42,499 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] [2020-10-14 05:07:42,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:07:42,500 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:42,501 INFO L82 PathProgramCache]: Analyzing trace with hash 383573529, now seen corresponding path program 1 times [2020-10-14 05:07:42,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:42,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841256563] [2020-10-14 05:07:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:42,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:43,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:43,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 05:07:43,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:43,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-10-14 05:07:43,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:43,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:07:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:43,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:43,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:43,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:43,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:43,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:43,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:43,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:43,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:43,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:43,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:07:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:07:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:43,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:43,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:07:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:44,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:07:44,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 05:07:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:44,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:07:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:44,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:44,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:44,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:07:44,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:44,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:07:44,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841256563] [2020-10-14 05:07:44,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:44,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:07:44,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834285986] [2020-10-14 05:07:44,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:07:44,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:44,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:07:44,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:07:44,122 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 7 states. [2020-10-14 05:07:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:44,311 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-10-14 05:07:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:07:44,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-14 05:07:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:44,313 INFO L225 Difference]: With dead ends: 55 [2020-10-14 05:07:44,314 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 05:07:44,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:07:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 05:07:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-14 05:07:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:07:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-14 05:07:44,322 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 32 [2020-10-14 05:07:44,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:44,322 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-14 05:07:44,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:07:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-14 05:07:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:07:44,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:44,324 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] [2020-10-14 05:07:44,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:07:44,324 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:44,325 INFO L82 PathProgramCache]: Analyzing trace with hash -101793304, now seen corresponding path program 1 times [2020-10-14 05:07:44,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:44,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759524414] [2020-10-14 05:07:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:44,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 05:07:46,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-14 05:07:46,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:46,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:46,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:46,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:46,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:46,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:07:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:07:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:07:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:07:46,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:07:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:46,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:07:46,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:07:46,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759524414] [2020-10-14 05:07:46,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:46,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:07:46,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397904458] [2020-10-14 05:07:46,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:07:46,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:46,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:07:46,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:07:46,159 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 7 states. [2020-10-14 05:07:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:46,360 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-14 05:07:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:07:46,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-14 05:07:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:46,362 INFO L225 Difference]: With dead ends: 72 [2020-10-14 05:07:46,362 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 05:07:46,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:07:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 05:07:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 05:07:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:07:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-14 05:07:46,370 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-10-14 05:07:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:46,370 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-14 05:07:46,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:07:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-14 05:07:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:07:46,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:46,372 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] [2020-10-14 05:07:46,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:07:46,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:46,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1130860167, now seen corresponding path program 1 times [2020-10-14 05:07:46,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:46,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267362695] [2020-10-14 05:07:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:07:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-14 05:07:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:47,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:07:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:07:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:47,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:47,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:47,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:47,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:47,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:47,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:07:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:07:47,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:47,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:07:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:47,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:07:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:07:47,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:07:47,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:47,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 05:07:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:47,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:47,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:07:47,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:47,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:07:47,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267362695] [2020-10-14 05:07:47,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:47,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:07:47,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930072283] [2020-10-14 05:07:47,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:07:47,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:47,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:07:47,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:07:47,228 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 5 states. [2020-10-14 05:07:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:47,405 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2020-10-14 05:07:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:07:47,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-14 05:07:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:47,406 INFO L225 Difference]: With dead ends: 77 [2020-10-14 05:07:47,407 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 05:07:47,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:07:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 05:07:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-14 05:07:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:07:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-14 05:07:47,413 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 37 [2020-10-14 05:07:47,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:47,413 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-14 05:07:47,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:07:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-14 05:07:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:07:47,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:47,415 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] [2020-10-14 05:07:47,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:07:47,415 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:47,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1192899781, now seen corresponding path program 1 times [2020-10-14 05:07:47,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:47,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382219829] [2020-10-14 05:07:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:07:49,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:07:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2280 [2020-10-14 05:07:49,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:07:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:07:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:49,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:49,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:49,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:07:49,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:07:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:07:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:07:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:07:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:07:49,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:07:49,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:07:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:07:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:07:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:50,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:07:50,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382219829] [2020-10-14 05:07:50,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:50,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:07:50,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785809904] [2020-10-14 05:07:50,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:07:50,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:50,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:07:50,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:07:50,033 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 10 states. [2020-10-14 05:07:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:50,301 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-14 05:07:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:07:50,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-14 05:07:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:50,303 INFO L225 Difference]: With dead ends: 61 [2020-10-14 05:07:50,303 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:07:50,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:07:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:07:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-14 05:07:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 05:07:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-14 05:07:50,321 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 37 [2020-10-14 05:07:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:50,321 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-14 05:07:50,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:07:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-14 05:07:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:07:50,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:50,324 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:07:50,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:07:50,325 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2058509770, now seen corresponding path program 1 times [2020-10-14 05:07:50,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:50,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164223799] [2020-10-14 05:07:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:53,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:07:53,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2656 [2020-10-14 05:07:53,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:53,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:53,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:07:53,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:53,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:07:53,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:53,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:53,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:53,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:53,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:53,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:53,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:53,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:07:53,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 05:07:53,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:53,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:07:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:07:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:53,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:07:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:54,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:54,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:07:54,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:54,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 05:07:54,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:54,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:07:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:07:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:54,572 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-14 05:07:54,877 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-14 05:07:55,260 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-14 05:07:55,502 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-14 05:07:55,707 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-14 05:07:55,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:55,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:55,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:07:55,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:55,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:56,322 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 41 [2020-10-14 05:07:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:07:56,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164223799] [2020-10-14 05:07:56,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:56,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:07:56,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464535760] [2020-10-14 05:07:56,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:07:56,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:56,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:07:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:07:56,354 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 26 states. [2020-10-14 05:07:59,271 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 86 [2020-10-14 05:07:59,802 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-10-14 05:08:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:00,363 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-10-14 05:08:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:08:00,367 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2020-10-14 05:08:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:00,368 INFO L225 Difference]: With dead ends: 70 [2020-10-14 05:08:00,368 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 05:08:00,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:08:00,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 05:08:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-10-14 05:08:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:08:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-14 05:08:00,378 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 42 [2020-10-14 05:08:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:00,378 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-14 05:08:00,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:08:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-14 05:08:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:08:00,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:00,380 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:08:00,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:08:00,380 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2058508096, now seen corresponding path program 1 times [2020-10-14 05:08:00,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:00,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105152694] [2020-10-14 05:08:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:05,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:08:05,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:08:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 05:08:05,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:05,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:08:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:08:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:05,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:05,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:05,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:05,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:05,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:05,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:08:05,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:05,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:05,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:05,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:05,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:08:05,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:05,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-14 05:08:05,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:05,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:08:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:06,122 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-14 05:08:08,094 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 280 DAG size of output: 68 [2020-10-14 05:08:09,597 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 173 DAG size of output: 101 [2020-10-14 05:08:09,783 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 38 [2020-10-14 05:08:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:09,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:09,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:09,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:09,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:08:09,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:09,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:09,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105152694] [2020-10-14 05:08:09,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:09,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:08:10,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730994396] [2020-10-14 05:08:10,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:08:10,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:10,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:08:10,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:08:10,004 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 14 states. [2020-10-14 05:08:11,555 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 144 DAG size of output: 139 [2020-10-14 05:08:11,963 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 05:08:14,071 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 120 DAG size of output: 107 [2020-10-14 05:08:15,891 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 129 DAG size of output: 111 [2020-10-14 05:08:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:16,349 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-14 05:08:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:08:16,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 05:08:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:16,353 INFO L225 Difference]: With dead ends: 72 [2020-10-14 05:08:16,353 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 05:08:16,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:08:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 05:08:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-10-14 05:08:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 05:08:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-14 05:08:16,364 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 42 [2020-10-14 05:08:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:16,365 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-14 05:08:16,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:08:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-14 05:08:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:08:16,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:16,366 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:08:16,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:08:16,366 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:16,367 INFO L82 PathProgramCache]: Analyzing trace with hash -461451838, now seen corresponding path program 1 times [2020-10-14 05:08:16,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:16,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363152193] [2020-10-14 05:08:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:16,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:21,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:08:21,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:08:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:08:21,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:21,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:08:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:08:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:21,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:21,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:21,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:21,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:21,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:21,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:21,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:21,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:21,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:21,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:08:21,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:21,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:21,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:21,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:08:21,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:08:21,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 05:08:21,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:21,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:08:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:22,122 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-14 05:08:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:22,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:22,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:22,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:08:22,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:22,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:22,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363152193] [2020-10-14 05:08:22,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:22,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:08:22,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047228813] [2020-10-14 05:08:22,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:08:22,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:22,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:08:22,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:08:22,245 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 13 states. [2020-10-14 05:08:22,676 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 05:08:22,981 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-14 05:08:23,200 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 05:08:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:23,450 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-14 05:08:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:08:23,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 05:08:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:23,452 INFO L225 Difference]: With dead ends: 74 [2020-10-14 05:08:23,453 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 05:08:23,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:08:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 05:08:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2020-10-14 05:08:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:08:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-14 05:08:23,463 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 42 [2020-10-14 05:08:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:23,463 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-14 05:08:23,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:08:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-14 05:08:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:08:23,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:23,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:23,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:08:23,465 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:23,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1900865563, now seen corresponding path program 1 times [2020-10-14 05:08:23,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:23,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100878816] [2020-10-14 05:08:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:24,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:27,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:27,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:08:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:08:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3741 [2020-10-14 05:08:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:27,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:08:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 05:08:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:27,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:27,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:27,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:27,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:27,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:27,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:08:27,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:27,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:27,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:27,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:08:27,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:08:27,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:27,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:08:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:27,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:27,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:08:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:08:27,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100878816] [2020-10-14 05:08:27,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:08:27,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 05:08:27,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500689739] [2020-10-14 05:08:27,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:08:27,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:27,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:08:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:08:27,559 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 14 states. [2020-10-14 05:08:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:28,254 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-10-14 05:08:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:08:28,256 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 05:08:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:28,257 INFO L225 Difference]: With dead ends: 70 [2020-10-14 05:08:28,258 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 05:08:28,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:08:28,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 05:08:28,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2020-10-14 05:08:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:08:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-14 05:08:28,267 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 43 [2020-10-14 05:08:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:28,268 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-14 05:08:28,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:08:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-14 05:08:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:08:28,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:28,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:28,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:08:28,269 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:28,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1900867237, now seen corresponding path program 1 times [2020-10-14 05:08:28,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:28,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781162861] [2020-10-14 05:08:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:28,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:08:32,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 05:08:32,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3974 [2020-10-14 05:08:32,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:08:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:08:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:08:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:32,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:32,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:08:32,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:32,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:32,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:08:32,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:08:32,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781162861] [2020-10-14 05:08:32,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:08:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:08:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912535081] [2020-10-14 05:08:32,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:08:32,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:32,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:08:32,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:08:32,516 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 12 states. [2020-10-14 05:08:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:32,880 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 05:08:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:08:32,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-14 05:08:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:32,882 INFO L225 Difference]: With dead ends: 76 [2020-10-14 05:08:32,882 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 05:08:32,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:08:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 05:08:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2020-10-14 05:08:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:08:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-14 05:08:32,892 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 43 [2020-10-14 05:08:32,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:32,893 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-14 05:08:32,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:08:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-14 05:08:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:08:32,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:32,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:32,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:08:32,894 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:32,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1091518937, now seen corresponding path program 1 times [2020-10-14 05:08:32,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:32,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535038351] [2020-10-14 05:08:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:08:34,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:08:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-14 05:08:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:08:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:08:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:08:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:34,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:08:34,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:08:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:34,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:34,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:34,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:34,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535038351] [2020-10-14 05:08:34,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:34,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:08:34,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509774333] [2020-10-14 05:08:34,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:08:34,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:34,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:08:34,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:08:34,502 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 7 states. [2020-10-14 05:08:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:34,698 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-14 05:08:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:08:34,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-14 05:08:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:34,699 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:08:34,699 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 05:08:34,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:08:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 05:08:34,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-14 05:08:34,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 05:08:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-10-14 05:08:34,708 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 43 [2020-10-14 05:08:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:34,708 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-10-14 05:08:34,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:08:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-10-14 05:08:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:08:34,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:34,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:34,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:08:34,710 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:34,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1908734900, now seen corresponding path program 2 times [2020-10-14 05:08:34,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:34,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078413071] [2020-10-14 05:08:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:35,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:35,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:08:35,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:35,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-14 05:08:35,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:35,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:08:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:35,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:35,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:35,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:35,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:35,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:35,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:35,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:35,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:35,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:35,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:35,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:35,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:35,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:35,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:08:35,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:35,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:35,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:35,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:35,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:08:35,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 05:08:35,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:35,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:08:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:35,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:35,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:35,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:08:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:35,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:35,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078413071] [2020-10-14 05:08:35,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:35,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:08:35,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803099418] [2020-10-14 05:08:35,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:08:35,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:35,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:08:35,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:08:35,365 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 8 states. [2020-10-14 05:08:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:35,593 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-10-14 05:08:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:08:35,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-14 05:08:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:35,594 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:08:35,594 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:08:35,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:08:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:08:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-14 05:08:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 05:08:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-14 05:08:35,602 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 43 [2020-10-14 05:08:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:35,602 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-14 05:08:35,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:08:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-14 05:08:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:08:35,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:35,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:35,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:08:35,603 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:35,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1751987579, now seen corresponding path program 1 times [2020-10-14 05:08:35,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:35,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127826023] [2020-10-14 05:08:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:36,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:08:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-14 05:08:36,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:36,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:08:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:08:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:37,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:37,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:37,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:37,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:37,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:37,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:08:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 05:08:37,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:37,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:08:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:08:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:38,118 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-14 05:08:38,505 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2020-10-14 05:08:38,759 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-14 05:08:38,946 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-14 05:08:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:38,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:38,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:38,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:08:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:38,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:08:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:08:39,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127826023] [2020-10-14 05:08:39,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:39,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:08:39,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866207929] [2020-10-14 05:08:39,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:08:39,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:39,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:08:39,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:08:39,226 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 27 states. [2020-10-14 05:08:41,678 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 113 [2020-10-14 05:08:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:42,395 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2020-10-14 05:08:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:08:42,396 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2020-10-14 05:08:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:42,397 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:08:42,397 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 05:08:42,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:08:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 05:08:42,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2020-10-14 05:08:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:08:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-14 05:08:42,406 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 44 [2020-10-14 05:08:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:42,406 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-14 05:08:42,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:08:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-14 05:08:42,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:08:42,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:42,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:42,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:08:42,408 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:42,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1751989253, now seen corresponding path program 1 times [2020-10-14 05:08:42,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:42,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079025519] [2020-10-14 05:08:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:42,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:45,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:45,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:08:45,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:08:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3090 [2020-10-14 05:08:45,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:45,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:08:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:08:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:08:45,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:45,855 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-10-14 05:08:45,977 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2020-10-14 05:08:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:46,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:46,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:46,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:46,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:46,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:46,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:46,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:08:46,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:46,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:08:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:46,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:46,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:08:46,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 05:08:46,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:08:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:46,878 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-14 05:08:47,891 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2020-10-14 05:08:54,227 WARN L193 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 489 DAG size of output: 167 [2020-10-14 05:08:55,520 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 342 DAG size of output: 59 [2020-10-14 05:08:55,757 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 26 [2020-10-14 05:08:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:55,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:55,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:55,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:08:55,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:55,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:55,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:08:55,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079025519] [2020-10-14 05:08:55,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:55,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:08:55,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874635082] [2020-10-14 05:08:55,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:08:55,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:55,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:08:55,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:08:55,914 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 16 states. [2020-10-14 05:08:56,755 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-14 05:08:58,363 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 156 DAG size of output: 152 [2020-10-14 05:09:02,650 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-14 05:09:07,745 WARN L193 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 209 DAG size of output: 200 [2020-10-14 05:09:08,301 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 05:09:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:09:08,499 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-14 05:09:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:09:08,500 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-14 05:09:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:09:08,501 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:09:08,501 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 05:09:08,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:09:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 05:09:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-10-14 05:09:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:09:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-14 05:09:08,516 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 44 [2020-10-14 05:09:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:09:08,517 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-14 05:09:08,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:09:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-14 05:09:08,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:09:08,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:09:08,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:09:08,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:09:08,518 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:09:08,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:09:08,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1071930883, now seen corresponding path program 1 times [2020-10-14 05:09:08,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:09:08,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433495095] [2020-10-14 05:09:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:09:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:10,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:10,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:09:10,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:09:10,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-14 05:09:10,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:10,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:09:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:09:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 05:09:10,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:09:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:10,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:10,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:09:10,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:09:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:10,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:09:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:09:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:09:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:10,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:10,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:09:10,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:09:10,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:10,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:09:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:09:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:09:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:11,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:11,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:09:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:11,520 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-14 05:09:11,687 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-14 05:09:11,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:09:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:11,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:11,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:11,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:09:11,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:11,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 05:09:11,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:11,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:09:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:09:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:09:11,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433495095] [2020-10-14 05:09:11,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:09:11,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:09:11,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871718203] [2020-10-14 05:09:11,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:09:11,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:09:11,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:09:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:09:11,867 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 21 states. [2020-10-14 05:09:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:09:13,039 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-14 05:09:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:09:13,047 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-14 05:09:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:09:13,047 INFO L225 Difference]: With dead ends: 68 [2020-10-14 05:09:13,048 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 05:09:13,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:09:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 05:09:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-10-14 05:09:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:09:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-14 05:09:13,057 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 44 [2020-10-14 05:09:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:09:13,058 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-14 05:09:13,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:09:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-14 05:09:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:09:13,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:09:13,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:09:13,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:09:13,059 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:09:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:09:13,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1370658336, now seen corresponding path program 1 times [2020-10-14 05:09:13,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:09:13,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269644827] [2020-10-14 05:09:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:09:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:14,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:18,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:18,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:09:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:09:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:18,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:18,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:09:18,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:09:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:18,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:09:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:09:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:09:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:18,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:18,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:09:18,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:09:18,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:18,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:09:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:09:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:09:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:09:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:18,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:18,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:09:18,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:09:18,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 05:09:18,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:18,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:09:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:09:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:09:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:09:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:09:18,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269644827] [2020-10-14 05:09:18,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:09:18,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:09:18,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595534201] [2020-10-14 05:09:18,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:09:18,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:09:18,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:09:18,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:09:18,799 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 17 states. [2020-10-14 05:09:19,527 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-14 05:09:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:09:19,925 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-10-14 05:09:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:09:19,926 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-14 05:09:19,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:09:19,927 INFO L225 Difference]: With dead ends: 66 [2020-10-14 05:09:19,928 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 05:09:19,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:09:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 05:09:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2020-10-14 05:09:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 05:09:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-10-14 05:09:19,935 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 45 [2020-10-14 05:09:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:09:19,935 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-10-14 05:09:19,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:09:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-10-14 05:09:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:09:19,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:09:19,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:09:19,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:09:19,937 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:09:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:09:19,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1370660010, now seen corresponding path program 1 times [2020-10-14 05:09:19,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:09:19,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54893692] [2020-10-14 05:09:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:09:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2202 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:09:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:09:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:22,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:22,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:09:22,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:22,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:09:22,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:22,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:09:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:09:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:09:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:09:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:22,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:09:22,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:09:22,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 05:09:22,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:22,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:09:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:09:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:09:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:09:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:09:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 05:09:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:22,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:09:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:09:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:22,889 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-14 05:09:22,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:09:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:22,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:22,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:09:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:09:23,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54893692] [2020-10-14 05:09:23,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:09:23,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:09:23,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234929794] [2020-10-14 05:09:23,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:09:23,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:09:23,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:09:23,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:09:23,074 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 20 states. [2020-10-14 05:09:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:09:24,457 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-10-14 05:09:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:09:24,458 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2020-10-14 05:09:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:09:24,459 INFO L225 Difference]: With dead ends: 100 [2020-10-14 05:09:24,459 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:09:24,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:09:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:09:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-14 05:09:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 05:09:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-14 05:09:24,466 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 45 [2020-10-14 05:09:24,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:09:24,467 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-14 05:09:24,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:09:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-14 05:09:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:09:24,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:09:24,467 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 05:09:24,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:09:24,468 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:09:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:09:24,468 INFO L82 PathProgramCache]: Analyzing trace with hash -32836480, now seen corresponding path program 2 times [2020-10-14 05:09:24,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:09:24,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919355928] [2020-10-14 05:09:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:09:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:26,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:26,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:09:26,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-10-14 05:09:26,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:26,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:09:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:09:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:09:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:26,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:09:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:26,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:26,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:09:26,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:09:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:26,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:26,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:09:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 05:09:26,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:26,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:09:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:09:26,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:09:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:27,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:09:27,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 05:09:27,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:27,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:09:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:09:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:28,630 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2020-10-14 05:09:29,071 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-10-14 05:09:31,336 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 206 DAG size of output: 144 [2020-10-14 05:09:34,210 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 284 DAG size of output: 171 [2020-10-14 05:09:36,914 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 194 DAG size of output: 138 [2020-10-14 05:09:36,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:09:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:36,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:36,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:09:36,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:09:36,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:36,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:09:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:09:36,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:37,496 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-14 05:09:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:09:37,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919355928] [2020-10-14 05:09:37,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:09:37,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:09:37,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101410982] [2020-10-14 05:09:37,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:09:37,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:09:37,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:09:37,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:09:37,529 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 30 states. [2020-10-14 05:09:38,774 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 05:09:39,336 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-14 05:09:39,749 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-14 05:09:43,111 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 288 DAG size of output: 191 [2020-10-14 05:09:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:09:44,660 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-10-14 05:09:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:09:44,661 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 46 [2020-10-14 05:09:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:09:44,662 INFO L225 Difference]: With dead ends: 61 [2020-10-14 05:09:44,662 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 05:09:44,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:09:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 05:09:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-10-14 05:09:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 05:09:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-14 05:09:44,672 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 46 [2020-10-14 05:09:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:09:44,673 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-14 05:09:44,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:09:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-14 05:09:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:09:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:09:44,673 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:09:44,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:09:44,674 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:09:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:09:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash -32838154, now seen corresponding path program 2 times [2020-10-14 05:09:44,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:09:44,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815931586] [2020-10-14 05:09:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:09:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:44,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:46,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:46,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:09:46,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-14 05:09:46,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:46,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:09:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:09:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:09:46,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:09:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:46,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:46,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:09:46,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:46,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:09:46,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:46,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:09:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:09:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:46,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:09:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:46,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:09:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:09:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:47,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:47,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:47,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:09:47,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 05:09:47,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:47,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:09:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:09:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:48,296 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-14 05:09:49,046 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 103 [2020-10-14 05:09:49,606 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 97 [2020-10-14 05:09:49,910 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2020-10-14 05:09:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:09:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:49,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:49,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:09:49,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:49,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:09:49,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:49,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:49,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:09:49,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:49,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:09:49,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:09:50,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815931586] [2020-10-14 05:09:50,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:09:50,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:09:50,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648429179] [2020-10-14 05:09:50,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:09:50,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:09:50,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:09:50,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:09:50,210 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 28 states. [2020-10-14 05:09:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:09:53,091 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2020-10-14 05:09:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:09:53,094 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2020-10-14 05:09:53,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:09:53,094 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:09:53,095 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 05:09:53,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:09:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 05:09:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2020-10-14 05:09:53,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 05:09:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-14 05:09:53,105 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 46 [2020-10-14 05:09:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:09:53,105 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-14 05:09:53,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:09:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-14 05:09:53,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:09:53,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:09:53,106 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:09:53,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:09:53,106 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:09:53,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:09:53,107 INFO L82 PathProgramCache]: Analyzing trace with hash 668226424, now seen corresponding path program 2 times [2020-10-14 05:09:53,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:09:53,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158178350] [2020-10-14 05:09:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:09:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:54,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:09:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:09:54,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-14 05:09:54,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:54,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:09:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:09:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:09:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:54,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:09:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:54,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:54,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:09:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:09:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:54,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:09:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:09:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:54,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:09:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:54,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:54,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:09:54,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 05:09:54,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:54,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:09:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:09:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:09:54,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:54,700 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-10-14 05:09:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:09:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:55,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:55,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:09:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:09:55,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 05:09:55,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:55,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:09:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:09:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:09:55,577 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-14 05:09:55,805 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-14 05:09:56,820 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-14 05:09:59,803 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2020-10-14 05:09:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:09:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:09:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:09:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:09:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:09:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:00,185 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-14 05:10:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:10:00,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158178350] [2020-10-14 05:10:00,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:10:00,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:10:00,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73434686] [2020-10-14 05:10:00,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:10:00,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:10:00,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:10:00,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:10:00,212 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 25 states. [2020-10-14 05:10:01,721 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-14 05:10:04,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:10:04,093 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-10-14 05:10:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:10:04,094 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-10-14 05:10:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:10:04,095 INFO L225 Difference]: With dead ends: 75 [2020-10-14 05:10:04,096 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 05:10:04,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:10:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 05:10:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2020-10-14 05:10:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 05:10:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-14 05:10:04,104 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 46 [2020-10-14 05:10:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:10:04,104 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-14 05:10:04,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:10:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-14 05:10:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:10:04,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:10:04,105 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 05:10:04,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:10:04,105 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:10:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:10:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1491039301, now seen corresponding path program 3 times [2020-10-14 05:10:04,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:10:04,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479119288] [2020-10-14 05:10:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:10:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:06,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:09,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:09,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:10:09,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:10:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5165 [2020-10-14 05:10:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:09,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:10:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:10:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:10:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:09,982 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 57 [2020-10-14 05:10:10,505 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 57 [2020-10-14 05:10:10,734 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-10-14 05:10:11,019 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-14 05:10:11,251 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-14 05:10:11,536 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-14 05:10:11,683 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-14 05:10:11,849 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-10-14 05:10:11,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:10:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:12,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:12,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:12,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:10:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:12,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:12,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:10:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:12,841 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-14 05:10:13,171 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-10-14 05:10:13,396 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-14 05:10:13,599 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-14 05:10:13,789 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-14 05:10:13,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:10:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:14,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:14,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:10:14,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:14,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 05:10:14,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:14,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:14,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:10:14,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:10:14,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:10:14,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:39,209 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 175 DAG size of output: 94 [2020-10-14 05:10:41,570 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 189 DAG size of output: 105 [2020-10-14 05:11:00,387 WARN L193 SmtUtils]: Spent 16.72 s on a formula simplification. DAG size of input: 305 DAG size of output: 170