/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:10:30,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:10:30,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:10:30,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:10:30,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:10:30,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:10:30,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:10:30,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:10:30,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:10:30,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:10:30,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:10:30,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:10:30,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:10:30,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:10:30,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:10:30,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:10:30,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:10:30,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:10:30,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:10:30,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:10:30,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:10:30,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:10:30,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:10:30,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:10:30,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:10:30,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:10:30,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:10:30,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:10:30,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:10:30,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:10:30,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:10:30,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:10:30,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:10:30,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:10:30,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:10:30,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:10:30,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:10:30,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:10:30,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:10:30,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:10:30,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:10:30,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:10:30,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:10:30,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:10:30,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:10:30,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:10:30,896 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:10:30,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:10:30,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:10:30,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:10:30,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:10:30,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:10:30,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:10:30,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:10:30,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:10:30,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:10:30,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:10:30,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:10:30,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:10:30,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:10:30,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:10:30,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:10:30,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:10:30,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:30,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:10:30,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:10:30,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:10:30,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:10:30,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:10:30,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:10:30,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:10:30,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:10:31,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:10:31,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:10:31,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:10:31,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:10:31,376 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:10:31,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-29 09:10:31,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15794d3ee/d93587c615924ada83ca85498a45b976/FLAG1fcb9366c [2020-10-29 09:10:32,264 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:10:32,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-29 09:10:32,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15794d3ee/d93587c615924ada83ca85498a45b976/FLAG1fcb9366c [2020-10-29 09:10:32,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15794d3ee/d93587c615924ada83ca85498a45b976 [2020-10-29 09:10:32,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:10:32,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:10:32,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:32,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:10:32,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:10:32,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:32" (1/1) ... [2020-10-29 09:10:32,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b10c70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:32, skipping insertion in model container [2020-10-29 09:10:32,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:32" (1/1) ... [2020-10-29 09:10:32,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:10:32,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:10:33,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:33,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:10:33,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:33,152 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:10:33,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33 WrapperNode [2020-10-29 09:10:33,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:33,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:10:33,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:10:33,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:10:33,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... [2020-10-29 09:10:33,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... [2020-10-29 09:10:33,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... [2020-10-29 09:10:33,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... [2020-10-29 09:10:33,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... [2020-10-29 09:10:33,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... [2020-10-29 09:10:33,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... [2020-10-29 09:10:33,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:10:33,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:10:33,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:10:33,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:10:33,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:33,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:10:33,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:10:33,325 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:10:33,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:10:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:10:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:10:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:10:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:10:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:10:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:10:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:10:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:10:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:10:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:10:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:10:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:10:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:10:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:10:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:10:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:10:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:10:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:10:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:10:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:10:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:10:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:10:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:10:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:10:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:10:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:10:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:10:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:10:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:10:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:10:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:10:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:10:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:10:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:10:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:10:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:10:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:10:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:10:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:10:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:10:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:10:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:10:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:10:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:10:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:10:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:10:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:10:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:10:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:10:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:10:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:10:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:10:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:10:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:10:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:10:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:10:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:10:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:10:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:10:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:10:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:10:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:10:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:10:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:10:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:10:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:10:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:10:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:10:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:10:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:10:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:10:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:10:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:10:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:10:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:10:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:10:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:10:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:10:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:10:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:10:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:10:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:10:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:10:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:10:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:10:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:10:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:10:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:10:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:10:33,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:10:33,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:10:33,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:10:33,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:10:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:10:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:10:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:10:33,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:10:34,093 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:10:34,093 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-29 09:10:34,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:34 BoogieIcfgContainer [2020-10-29 09:10:34,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:10:34,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:10:34,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:10:34,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:10:34,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:10:32" (1/3) ... [2020-10-29 09:10:34,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e186a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:34, skipping insertion in model container [2020-10-29 09:10:34,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:33" (2/3) ... [2020-10-29 09:10:34,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e186a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:34, skipping insertion in model container [2020-10-29 09:10:34,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:34" (3/3) ... [2020-10-29 09:10:34,108 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2020-10-29 09:10:34,121 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:10:34,127 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:10:34,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:10:34,178 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:10:34,179 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:10:34,179 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:10:34,179 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:10:34,179 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:10:34,179 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:10:34,179 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:10:34,179 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:10:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-29 09:10:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 09:10:34,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:34,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:34,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:34,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2031057720, now seen corresponding path program 1 times [2020-10-29 09:10:34,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:34,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715886367] [2020-10-29 09:10:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:10:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 09:10:34,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:34,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:10:34,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:34,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:10:34,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:10:35,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:35,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:35,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:35,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:35,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:10:35,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:35,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:35,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715886367] [2020-10-29 09:10:35,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:35,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:35,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073637897] [2020-10-29 09:10:35,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:35,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:35,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:35,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:35,122 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 5 states. [2020-10-29 09:10:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:35,396 INFO L93 Difference]: Finished difference Result 120 states and 208 transitions. [2020-10-29 09:10:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:10:35,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-29 09:10:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:35,408 INFO L225 Difference]: With dead ends: 120 [2020-10-29 09:10:35,408 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:10:35,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:10:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 44. [2020-10-29 09:10:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:10:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-29 09:10:35,458 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 14 [2020-10-29 09:10:35,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:35,458 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-29 09:10:35,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-29 09:10:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:10:35,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:35,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:35,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:10:35,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:35,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1948730651, now seen corresponding path program 1 times [2020-10-29 09:10:35,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:35,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656087346] [2020-10-29 09:10:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:35,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:10:35,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-29 09:10:35,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:35,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:10:35,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:36,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:36,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:36,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:10:36,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:36,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:36,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:36,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656087346] [2020-10-29 09:10:36,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:36,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:36,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080530504] [2020-10-29 09:10:36,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:36,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:36,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:36,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:36,107 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 6 states. [2020-10-29 09:10:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:36,534 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2020-10-29 09:10:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:36,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 09:10:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:36,538 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:10:36,538 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 09:10:36,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:36,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 09:10:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-29 09:10:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 09:10:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-29 09:10:36,551 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 15 [2020-10-29 09:10:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:36,551 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-29 09:10:36,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-29 09:10:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:10:36,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:36,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:36,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:10:36,553 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:36,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1947134467, now seen corresponding path program 1 times [2020-10-29 09:10:36,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:36,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059824876] [2020-10-29 09:10:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:10:36,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 09:10:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:36,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:10:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:10:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:10:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:36,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:36,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:36,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:10:36,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:36,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:36,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059824876] [2020-10-29 09:10:36,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:36,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:10:36,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776519459] [2020-10-29 09:10:36,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:10:36,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:36,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:10:36,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:10:36,721 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 4 states. [2020-10-29 09:10:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:36,988 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-29 09:10:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:10:36,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-29 09:10:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:36,990 INFO L225 Difference]: With dead ends: 52 [2020-10-29 09:10:36,990 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 09:10:36,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:10:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 09:10:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 09:10:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:10:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-10-29 09:10:37,016 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 16 [2020-10-29 09:10:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:37,016 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-10-29 09:10:37,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:10:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-10-29 09:10:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:10:37,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:37,018 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] [2020-10-29 09:10:37,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:10:37,018 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 59150788, now seen corresponding path program 1 times [2020-10-29 09:10:37,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:37,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670650986] [2020-10-29 09:10:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:10:37,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-29 09:10:37,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:37,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:37,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:37,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:37,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:37,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670650986] [2020-10-29 09:10:37,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:37,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:37,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600058415] [2020-10-29 09:10:37,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:37,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:37,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:37,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:37,807 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 8 states. [2020-10-29 09:10:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:38,382 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-29 09:10:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:38,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-29 09:10:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:38,384 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:10:38,384 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:10:38,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:10:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-29 09:10:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:10:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-29 09:10:38,393 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 21 [2020-10-29 09:10:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:38,393 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-29 09:10:38,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-29 09:10:38,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:10:38,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:38,394 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] [2020-10-29 09:10:38,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:10:38,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:38,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:38,395 INFO L82 PathProgramCache]: Analyzing trace with hash -465827442, now seen corresponding path program 1 times [2020-10-29 09:10:38,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:38,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791219342] [2020-10-29 09:10:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:39,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:10:39,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-29 09:10:39,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:39,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:39,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:39,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:10:39,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:39,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:39,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791219342] [2020-10-29 09:10:39,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:39,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:10:39,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818980773] [2020-10-29 09:10:39,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:39,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:39,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:39,249 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 8 states. [2020-10-29 09:10:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:39,938 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2020-10-29 09:10:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:10:39,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-29 09:10:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:39,945 INFO L225 Difference]: With dead ends: 126 [2020-10-29 09:10:39,946 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 09:10:39,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 09:10:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2020-10-29 09:10:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 09:10:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-10-29 09:10:39,968 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 22 [2020-10-29 09:10:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:39,971 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-10-29 09:10:39,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-10-29 09:10:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:10:39,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:39,974 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] [2020-10-29 09:10:39,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:10:39,975 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:39,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:39,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1475919637, now seen corresponding path program 1 times [2020-10-29 09:10:39,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:39,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80657207] [2020-10-29 09:10:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:40,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:10:40,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:40,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 09:10:40,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:40,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:10:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:40,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:40,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:40,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:40,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80657207] [2020-10-29 09:10:40,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:40,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:40,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157198190] [2020-10-29 09:10:40,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:40,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:40,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:40,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:40,409 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 8 states. [2020-10-29 09:10:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:40,938 INFO L93 Difference]: Finished difference Result 130 states and 161 transitions. [2020-10-29 09:10:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:40,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-29 09:10:40,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:40,941 INFO L225 Difference]: With dead ends: 130 [2020-10-29 09:10:40,941 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 09:10:40,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 09:10:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 75. [2020-10-29 09:10:40,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 09:10:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-10-29 09:10:40,954 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 23 [2020-10-29 09:10:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:40,954 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-10-29 09:10:40,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-10-29 09:10:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:10:40,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:40,956 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, 1, 1] [2020-10-29 09:10:40,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:10:40,956 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:40,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1979879590, now seen corresponding path program 2 times [2020-10-29 09:10:40,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:40,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574805475] [2020-10-29 09:10:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:41,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:41,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:10:41,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:41,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-29 09:10:41,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:41,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:10:41,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:10:42,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:42,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:42,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574805475] [2020-10-29 09:10:42,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:42,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:42,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369796563] [2020-10-29 09:10:42,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:42,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:42,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:42,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:42,113 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 9 states. [2020-10-29 09:10:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:42,995 INFO L93 Difference]: Finished difference Result 158 states and 195 transitions. [2020-10-29 09:10:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:10:42,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-29 09:10:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:43,000 INFO L225 Difference]: With dead ends: 158 [2020-10-29 09:10:43,000 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 09:10:43,001 INFO L677 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 [2020-10-29 09:10:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 09:10:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 84. [2020-10-29 09:10:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 09:10:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2020-10-29 09:10:43,013 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 25 [2020-10-29 09:10:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:43,014 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2020-10-29 09:10:43,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2020-10-29 09:10:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:10:43,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:43,015 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, 1, 1] [2020-10-29 09:10:43,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:10:43,016 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:43,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:43,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1294019352, now seen corresponding path program 1 times [2020-10-29 09:10:43,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:43,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047335438] [2020-10-29 09:10:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:43,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:43,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:10:43,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 09:10:43,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:43,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:10:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:43,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:43,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:43,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:43,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:43,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:43,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:43,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:43,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047335438] [2020-10-29 09:10:43,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:43,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:43,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218279100] [2020-10-29 09:10:43,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:43,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:43,474 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 9 states. [2020-10-29 09:10:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:44,171 INFO L93 Difference]: Finished difference Result 143 states and 177 transitions. [2020-10-29 09:10:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:10:44,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-29 09:10:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:44,173 INFO L225 Difference]: With dead ends: 143 [2020-10-29 09:10:44,173 INFO L226 Difference]: Without dead ends: 139 [2020-10-29 09:10:44,174 INFO L677 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 [2020-10-29 09:10:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-29 09:10:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-10-29 09:10:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 09:10:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2020-10-29 09:10:44,203 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 25 [2020-10-29 09:10:44,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:44,204 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2020-10-29 09:10:44,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2020-10-29 09:10:44,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:10:44,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:44,208 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:44,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:10:44,209 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:44,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:44,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1844994340, now seen corresponding path program 2 times [2020-10-29 09:10:44,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:44,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850079985] [2020-10-29 09:10:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:44,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:44,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:10:44,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-29 09:10:44,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:44,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:10:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:44,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:10:44,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:45,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:10:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:45,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:45,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850079985] [2020-10-29 09:10:45,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:45,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:10:45,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253566928] [2020-10-29 09:10:45,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:10:45,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:10:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:10:45,180 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 10 states. [2020-10-29 09:10:45,646 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-29 09:10:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:46,218 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2020-10-29 09:10:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:10:46,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-29 09:10:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:46,221 INFO L225 Difference]: With dead ends: 108 [2020-10-29 09:10:46,221 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 09:10:46,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:10:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 09:10:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2020-10-29 09:10:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 09:10:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2020-10-29 09:10:46,234 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 26 [2020-10-29 09:10:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:46,234 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2020-10-29 09:10:46,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:10:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2020-10-29 09:10:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:10:46,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:46,236 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, 1, 1] [2020-10-29 09:10:46,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:10:46,236 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:46,237 INFO L82 PathProgramCache]: Analyzing trace with hash -692394339, now seen corresponding path program 2 times [2020-10-29 09:10:46,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:46,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196412451] [2020-10-29 09:10:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:10:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-29 09:10:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:46,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:10:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:10:46,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:46,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:46,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:46,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:10:46,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:46,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:46,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196412451] [2020-10-29 09:10:46,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:46,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:10:46,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584655765] [2020-10-29 09:10:46,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:10:46,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:46,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:10:46,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:10:46,968 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand 10 states. [2020-10-29 09:10:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:48,311 INFO L93 Difference]: Finished difference Result 168 states and 205 transitions. [2020-10-29 09:10:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:10:48,311 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-29 09:10:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:48,312 INFO L225 Difference]: With dead ends: 168 [2020-10-29 09:10:48,312 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 09:10:48,313 INFO L677 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 [2020-10-29 09:10:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 09:10:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 89. [2020-10-29 09:10:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 09:10:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-10-29 09:10:48,324 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 27 [2020-10-29 09:10:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:48,324 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-10-29 09:10:48,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:10:48,324 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-10-29 09:10:48,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:10:48,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:48,325 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, 1, 1] [2020-10-29 09:10:48,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:10:48,326 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:48,326 INFO L82 PathProgramCache]: Analyzing trace with hash 95128516, now seen corresponding path program 1 times [2020-10-29 09:10:48,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:48,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131590503] [2020-10-29 09:10:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:10:48,361 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:10:48,361 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:10:48,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:10:48,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:10:48 BoogieIcfgContainer [2020-10-29 09:10:48,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:10:48,387 INFO L168 Benchmark]: Toolchain (without parser) took 15909.94 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 124.8 MB in the beginning and 149.1 MB in the end (delta: -24.3 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:48,387 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:10:48,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.94 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:48,389 INFO L168 Benchmark]: Boogie Preprocessor took 84.86 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 132.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:48,389 INFO L168 Benchmark]: RCFGBuilder took 856.20 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 80.7 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:48,390 INFO L168 Benchmark]: TraceAbstraction took 14284.67 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 80.2 MB in the beginning and 149.1 MB in the end (delta: -68.9 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:48,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 665.94 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.86 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 132.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 856.20 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 80.7 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14284.67 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 80.2 MB in the beginning and 149.1 MB in the end (delta: -68.9 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1004] BCK* bucket = malloc(sizeof(BCK)); [L1005] bucket->data = 0 [L1006] bucket->list = ((void*)0) [L1008] bucket->next = malloc(sizeof(BCK)) [L1009] EXPR bucket->next [L1009] BCK* bcki = bucket->next; [L1010] bcki->data = 1 [L1011] bcki->list = ((void*)0) [L1013] bcki->next = malloc(sizeof(BCK)) [L1014] EXPR bcki->next [L1014] bcki = bcki->next [L1015] bcki->data = 2 [L1016] bcki->list = ((void*)0) [L1017] bcki->next = ((void*)0) [L1019] struct TSLL* item = ((void*)0); [L1020] struct TSLL* itr = ((void*)0); [L1021] COND TRUE __VERIFIER_nondet_int() [L1023] item = malloc(sizeof(SLL)) [L1024] item->next = ((void*)0) [L1025] COND TRUE __VERIFIER_nondet_int() [L1026] item->data = 0 [L1032] bcki = bucket [L1034] COND FALSE !(!(bcki != ((void*)0))) [L1035] COND FALSE !(!(item != ((void*)0))) [L1036] EXPR bcki->data [L1036] EXPR item->data [L1036] COND FALSE !(bcki->data != item->data) [L1038] COND FALSE !(!(bcki != ((void*)0))) [L1040] EXPR bcki->list [L1040] COND TRUE bcki->list == ((void*)0) [L1041] bcki->list = item [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1052] bcki = bucket [L1053] COND TRUE bcki != ((void*)0) [L1055] EXPR bcki->list [L1055] item = bcki->list [L1056] bcki->list = ((void*)0) [L1057] COND TRUE item != ((void*)0) [L1059] itr = item [L1060] EXPR item->next [L1060] item = item->next [L1061] EXPR itr->data [L1061] EXPR bcki->data [L1061] COND TRUE !(itr->data != bcki->data) [L1061] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-buckets-2.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 370 SDtfs, 706 SDslu, 1164 SDs, 0 SdLazy, 2102 SolverSat, 187 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=9, 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, 10 MinimizatonAttempts, 246 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 80211 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 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...