/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:27,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:27,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:27,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:27,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:27,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:27,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:27,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:27,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:27,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:27,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:27,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:27,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:27,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:27,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:27,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:27,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:27,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:27,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:27,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:27,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:27,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:27,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:27,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:27,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:27,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:27,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:27,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:27,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:27,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:27,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:27,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:27,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:27,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:27,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:27,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:27,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:27,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:27,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:27,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:27,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:27,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:21:27,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:27,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:27,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:27,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:27,215 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:27,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:27,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:27,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:27,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:27,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:27,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:27,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:27,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:27,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:27,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:27,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:27,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:27,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:27,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:27,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:27,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:27,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:27,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:27,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:27,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:27,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:27,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:27,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:27,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:27,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:21:27,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:27,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:27,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:27,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:27,584 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:27,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-13 10:21:27,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b1c8d340/01ef082eb3754338b6432617203bd8c8/FLAG3430b179a [2020-10-13 10:21:28,229 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:28,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-13 10:21:28,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b1c8d340/01ef082eb3754338b6432617203bd8c8/FLAG3430b179a [2020-10-13 10:21:28,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b1c8d340/01ef082eb3754338b6432617203bd8c8 [2020-10-13 10:21:28,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:28,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:28,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:28,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:28,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:28,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:28" (1/1) ... [2020-10-13 10:21:28,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:28, skipping insertion in model container [2020-10-13 10:21:28,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:28" (1/1) ... [2020-10-13 10:21:28,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:28,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:28,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:29,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:29,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:29,127 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:29,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29 WrapperNode [2020-10-13 10:21:29,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:29,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:29,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:29,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:29,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... [2020-10-13 10:21:29,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... [2020-10-13 10:21:29,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... [2020-10-13 10:21:29,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... [2020-10-13 10:21:29,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... [2020-10-13 10:21:29,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... [2020-10-13 10:21:29,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... [2020-10-13 10:21:29,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:29,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:29,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:29,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:29,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:29,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:29,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:29,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:21:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:21:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:29,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:29,992 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-13 10:21:29,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:29 BoogieIcfgContainer [2020-10-13 10:21:29,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:29,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:29,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:30,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:30,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:28" (1/3) ... [2020-10-13 10:21:30,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcc91ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:30, skipping insertion in model container [2020-10-13 10:21:30,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:29" (2/3) ... [2020-10-13 10:21:30,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcc91ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:30, skipping insertion in model container [2020-10-13 10:21:30,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:29" (3/3) ... [2020-10-13 10:21:30,005 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2020-10-13 10:21:30,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:30,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 10:21:30,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 10:21:30,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:30,064 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:30,064 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:30,064 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:30,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:30,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:30,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:30,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-13 10:21:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 10:21:30,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:30,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:30,121 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:30,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1953697339, now seen corresponding path program 1 times [2020-10-13 10:21:30,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:30,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638232667] [2020-10-13 10:21:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:21:30,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-13 10:21:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:21:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:30,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:21:30,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:30,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638232667] [2020-10-13 10:21:30,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:30,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:30,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073990708] [2020-10-13 10:21:30,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:30,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:30,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:30,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:30,857 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-13 10:21:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:31,211 INFO L93 Difference]: Finished difference Result 118 states and 194 transitions. [2020-10-13 10:21:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:31,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-13 10:21:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:31,234 INFO L225 Difference]: With dead ends: 118 [2020-10-13 10:21:31,235 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 10:21:31,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:31,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 10:21:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 45. [2020-10-13 10:21:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 10:21:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-13 10:21:31,296 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 12 [2020-10-13 10:21:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:31,297 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-13 10:21:31,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-13 10:21:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-13 10:21:31,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:31,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:31,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:31,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:31,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:31,300 INFO L82 PathProgramCache]: Analyzing trace with hash 471340906, now seen corresponding path program 1 times [2020-10-13 10:21:31,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:31,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637956792] [2020-10-13 10:21:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:21:31,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:31,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-13 10:21:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:21:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:31,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:31,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637956792] [2020-10-13 10:21:31,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:31,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:31,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199264027] [2020-10-13 10:21:31,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:31,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:31,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:31,589 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 4 states. [2020-10-13 10:21:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:31,784 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-13 10:21:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:31,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-13 10:21:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:31,786 INFO L225 Difference]: With dead ends: 49 [2020-10-13 10:21:31,786 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 10:21:31,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 10:21:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-13 10:21:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 10:21:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-13 10:21:31,796 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 13 [2020-10-13 10:21:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:31,796 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-13 10:21:31,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-13 10:21:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:31,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:31,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:31,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:31,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:31,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1726702173, now seen corresponding path program 1 times [2020-10-13 10:21:31,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:31,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041328053] [2020-10-13 10:21:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:31,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 10:21:31,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:31,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:31,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:21:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:32,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:32,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:32,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041328053] [2020-10-13 10:21:32,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:32,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:32,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557766785] [2020-10-13 10:21:32,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:32,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:32,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:32,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:32,056 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 6 states. [2020-10-13 10:21:32,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:32,337 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-13 10:21:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:32,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-13 10:21:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:32,340 INFO L225 Difference]: With dead ends: 65 [2020-10-13 10:21:32,340 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:21:32,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:21:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-13 10:21:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-13 10:21:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-13 10:21:32,350 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 14 [2020-10-13 10:21:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:32,350 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-13 10:21:32,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-13 10:21:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:32,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:32,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:32,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:32,352 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:32,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:32,353 INFO L82 PathProgramCache]: Analyzing trace with hash 602561823, now seen corresponding path program 1 times [2020-10-13 10:21:32,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:32,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710848649] [2020-10-13 10:21:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 10:21:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:21:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:21:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:32,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:32,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:32,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710848649] [2020-10-13 10:21:32,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:32,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:32,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425191947] [2020-10-13 10:21:32,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:32,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:32,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:32,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:32,461 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 4 states. [2020-10-13 10:21:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:32,728 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-13 10:21:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:32,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 10:21:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:32,730 INFO L225 Difference]: With dead ends: 49 [2020-10-13 10:21:32,730 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 10:21:32,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 10:21:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-13 10:21:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:21:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-13 10:21:32,738 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 14 [2020-10-13 10:21:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:32,739 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-13 10:21:32,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-13 10:21:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:21:32,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:32,741 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:32,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:32,741 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:32,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2131101984, now seen corresponding path program 1 times [2020-10-13 10:21:32,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:32,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290746128] [2020-10-13 10:21:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:21:33,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-13 10:21:33,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:33,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:33,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290746128] [2020-10-13 10:21:33,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:33,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:33,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855324715] [2020-10-13 10:21:33,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:33,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:33,200 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 8 states. [2020-10-13 10:21:33,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:33,776 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-13 10:21:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:33,776 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-13 10:21:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:33,777 INFO L225 Difference]: With dead ends: 65 [2020-10-13 10:21:33,777 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:21:33,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:21:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-13 10:21:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 10:21:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-13 10:21:33,785 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 19 [2020-10-13 10:21:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:33,786 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-13 10:21:33,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-13 10:21:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:33,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:33,787 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:33,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:33,788 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1728098773, now seen corresponding path program 1 times [2020-10-13 10:21:33,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:33,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906432398] [2020-10-13 10:21:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-13 10:21:34,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:34,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:34,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:34,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:34,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906432398] [2020-10-13 10:21:34,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:34,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 10:21:34,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808005824] [2020-10-13 10:21:34,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:34,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:34,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:34,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:34,419 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 8 states. [2020-10-13 10:21:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:35,090 INFO L93 Difference]: Finished difference Result 121 states and 147 transitions. [2020-10-13 10:21:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:35,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-13 10:21:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:35,092 INFO L225 Difference]: With dead ends: 121 [2020-10-13 10:21:35,092 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 10:21:35,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 10:21:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 59. [2020-10-13 10:21:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 10:21:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-13 10:21:35,116 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 20 [2020-10-13 10:21:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:35,119 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-13 10:21:35,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-13 10:21:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:21:35,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:35,121 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:35,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:35,123 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash -861817323, now seen corresponding path program 1 times [2020-10-13 10:21:35,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:35,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217212269] [2020-10-13 10:21:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:21:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-13 10:21:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:21:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:35,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:35,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:35,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217212269] [2020-10-13 10:21:35,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:35,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:35,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974292069] [2020-10-13 10:21:35,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:35,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:35,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:35,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:35,565 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 8 states. [2020-10-13 10:21:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:35,988 INFO L93 Difference]: Finished difference Result 108 states and 132 transitions. [2020-10-13 10:21:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:35,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-13 10:21:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:35,991 INFO L225 Difference]: With dead ends: 108 [2020-10-13 10:21:35,991 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 10:21:35,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 10:21:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2020-10-13 10:21:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 10:21:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2020-10-13 10:21:36,000 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 21 [2020-10-13 10:21:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:36,001 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2020-10-13 10:21:36,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2020-10-13 10:21:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:21:36,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:36,002 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:36,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:36,002 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:36,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:36,003 INFO L82 PathProgramCache]: Analyzing trace with hash 723692346, now seen corresponding path program 2 times [2020-10-13 10:21:36,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:36,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126928003] [2020-10-13 10:21:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:36,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:21:36,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-13 10:21:36,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:21:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:36,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:36,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:36,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:36,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126928003] [2020-10-13 10:21:36,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:36,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:36,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981325628] [2020-10-13 10:21:36,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:36,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:36,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:36,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:36,876 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand 9 states. [2020-10-13 10:21:37,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:37,679 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2020-10-13 10:21:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:37,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-13 10:21:37,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:37,681 INFO L225 Difference]: With dead ends: 139 [2020-10-13 10:21:37,681 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 10:21:37,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 10:21:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 74. [2020-10-13 10:21:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:21:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-13 10:21:37,691 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 23 [2020-10-13 10:21:37,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:37,691 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-13 10:21:37,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2020-10-13 10:21:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:21:37,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:37,693 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:37,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:37,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash -287424904, now seen corresponding path program 1 times [2020-10-13 10:21:37,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:37,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683958424] [2020-10-13 10:21:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:21:37,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 10:21:37,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:21:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:38,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:38,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:38,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683958424] [2020-10-13 10:21:38,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:38,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:38,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461396309] [2020-10-13 10:21:38,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:38,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:38,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:38,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:38,088 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 9 states. [2020-10-13 10:21:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:38,710 INFO L93 Difference]: Finished difference Result 123 states and 151 transitions. [2020-10-13 10:21:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:38,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-13 10:21:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:38,711 INFO L225 Difference]: With dead ends: 123 [2020-10-13 10:21:38,711 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 10:21:38,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 10:21:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2020-10-13 10:21:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 10:21:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2020-10-13 10:21:38,729 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 23 [2020-10-13 10:21:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:38,730 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2020-10-13 10:21:38,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2020-10-13 10:21:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:38,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:38,732 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:38,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:38,737 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:38,738 INFO L82 PathProgramCache]: Analyzing trace with hash -127654851, now seen corresponding path program 2 times [2020-10-13 10:21:38,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:38,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021198513] [2020-10-13 10:21:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:39,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:39,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 10:21:39,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:21:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:39,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:39,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:39,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:39,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021198513] [2020-10-13 10:21:39,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:39,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:39,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052982112] [2020-10-13 10:21:39,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:39,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:39,325 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 10 states. [2020-10-13 10:21:39,718 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-13 10:21:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:40,149 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2020-10-13 10:21:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:21:40,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-13 10:21:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:40,152 INFO L225 Difference]: With dead ends: 96 [2020-10-13 10:21:40,152 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 10:21:40,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:21:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 10:21:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-13 10:21:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:21:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-13 10:21:40,161 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 24 [2020-10-13 10:21:40,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:40,161 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-13 10:21:40,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-13 10:21:40,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:21:40,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:40,162 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:40,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:40,163 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:40,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1335974179, now seen corresponding path program 2 times [2020-10-13 10:21:40,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:40,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131233105] [2020-10-13 10:21:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:21:40,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:40,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-13 10:21:40,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:40,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:40,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:21:40,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:40,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131233105] [2020-10-13 10:21:40,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:40,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:40,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136014668] [2020-10-13 10:21:40,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:40,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:40,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:40,574 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 10 states. [2020-10-13 10:21:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:42,038 INFO L93 Difference]: Finished difference Result 146 states and 177 transitions. [2020-10-13 10:21:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:42,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-13 10:21:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:42,040 INFO L225 Difference]: With dead ends: 146 [2020-10-13 10:21:42,040 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 10:21:42,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:21:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 10:21:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 79. [2020-10-13 10:21:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 10:21:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2020-10-13 10:21:42,049 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 25 [2020-10-13 10:21:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:42,050 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-10-13 10:21:42,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2020-10-13 10:21:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:42,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:42,051 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:21:42,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:42,051 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:42,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:42,052 INFO L82 PathProgramCache]: Analyzing trace with hash -791238755, now seen corresponding path program 1 times [2020-10-13 10:21:42,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:42,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333800252] [2020-10-13 10:21:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:21:42,073 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:21:42,073 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:21:42,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:42,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:21:42 BoogieIcfgContainer [2020-10-13 10:21:42,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:21:42,100 INFO L168 Benchmark]: Toolchain (without parser) took 13583.98 ms. Allocated memory was 142.6 MB in the beginning and 370.1 MB in the end (delta: 227.5 MB). Free memory was 102.6 MB in the beginning and 236.3 MB in the end (delta: -133.6 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:42,101 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-13 10:21:42,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.08 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 171.6 MB in the end (delta: -69.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:42,103 INFO L168 Benchmark]: Boogie Preprocessor took 73.73 ms. Allocated memory is still 203.9 MB. Free memory was 171.6 MB in the beginning and 168.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:42,103 INFO L168 Benchmark]: RCFGBuilder took 792.65 ms. Allocated memory is still 203.9 MB. Free memory was 168.0 MB in the beginning and 113.5 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:42,104 INFO L168 Benchmark]: TraceAbstraction took 12100.78 ms. Allocated memory was 203.9 MB in the beginning and 370.1 MB in the end (delta: 166.2 MB). Free memory was 112.8 MB in the beginning and 236.3 MB in the end (delta: -123.5 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:42,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 612.08 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 171.6 MB in the end (delta: -69.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.73 ms. Allocated memory is still 203.9 MB. Free memory was 171.6 MB in the beginning and 168.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 792.65 ms. Allocated memory is still 203.9 MB. Free memory was 168.0 MB in the beginning and 113.5 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12100.78 ms. Allocated memory was 203.9 MB in the beginning and 370.1 MB in the end (delta: 166.2 MB). Free memory was 112.8 MB in the beginning and 236.3 MB in the end (delta: -123.5 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1050]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] BCK* bucket = malloc(sizeof(BCK)); [L994] bucket->data = 0 [L995] bucket->list = ((void*)0) [L997] bucket->next = malloc(sizeof(BCK)) [L998] EXPR bucket->next [L998] BCK* bcki = bucket->next; [L999] bcki->data = 1 [L1000] bcki->list = ((void*)0) [L1002] bcki->next = malloc(sizeof(BCK)) [L1003] EXPR bcki->next [L1003] bcki = bcki->next [L1004] bcki->data = 2 [L1005] bcki->list = ((void*)0) [L1006] bcki->next = ((void*)0) [L1008] struct TSLL* item = ((void*)0); [L1009] struct TSLL* itr = ((void*)0); [L1010] COND TRUE __VERIFIER_nondet_int() [L1012] item = malloc(sizeof(SLL)) [L1013] item->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1015] item->data = 0 [L1021] bcki = bucket [L1023] COND FALSE !(!(bcki != ((void*)0))) [L1024] COND FALSE !(!(item != ((void*)0))) [L1025] EXPR bcki->data [L1025] EXPR item->data [L1025] COND FALSE !(bcki->data != item->data) [L1027] COND FALSE !(!(bcki != ((void*)0))) [L1029] EXPR bcki->list [L1029] COND TRUE bcki->list == ((void*)0) [L1030] bcki->list = item [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1041] bcki = bucket [L1042] COND TRUE bcki != ((void*)0) [L1044] EXPR bcki->list [L1044] item = bcki->list [L1045] bcki->list = ((void*)0) [L1046] COND TRUE item != ((void*)0) [L1048] itr = item [L1049] EXPR item->next [L1049] item = item->next [L1050] EXPR itr->data [L1050] EXPR bcki->data [L1050] COND TRUE !(itr->data != bcki->data) [L1050] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.0s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 711 SDslu, 1230 SDs, 0 SdLazy, 2084 SolverSat, 158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 216 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 70959 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 12/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...