/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=SHALLOWEST --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/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:19:44,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:19:44,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:19:44,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:19:44,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:19:44,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:19:44,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:19:44,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:19:44,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:19:44,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:19:44,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:19:44,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:19:44,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:19:44,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:19:44,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:19:44,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:19:44,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:19:44,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:19:44,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:19:44,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:19:44,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:19:44,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:19:44,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:19:44,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:19:44,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:19:44,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:19:44,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:19:44,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:19:44,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:19:44,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:19:44,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:19:44,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:19:44,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:19:44,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:19:44,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:19:44,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:19:44,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:19:44,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:19:44,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:19:44,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:19:44,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:19:44,599 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 [2020-10-27 01:19:44,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:19:44,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:19:44,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:19:44,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:19:44,651 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:19:44,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:19:44,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:19:44,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:19:44,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:19:44,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:19:44,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:19:44,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:19:44,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:19:44,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:19:44,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:19:44,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:19:44,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:19:44,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:19:44,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:19:44,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:19:44,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:19:44,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:19:44,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:19:44,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:19:44,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:19:44,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:19:44,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:19:44,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:19:44,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:19:44,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:19:45,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:19:45,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:19:45,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:19:45,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:19:45,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:19:45,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-10-27 01:19:45,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722a76c1c/caddf5820fc740048e5e0f59666541d3/FLAG8195d44c0 [2020-10-27 01:19:45,972 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:19:45,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-10-27 01:19:45,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722a76c1c/caddf5820fc740048e5e0f59666541d3/FLAG8195d44c0 [2020-10-27 01:19:46,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722a76c1c/caddf5820fc740048e5e0f59666541d3 [2020-10-27 01:19:46,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:19:46,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:19:46,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:19:46,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:19:46,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:19:46,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:46,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d56e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46, skipping insertion in model container [2020-10-27 01:19:46,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:46,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:19:46,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:19:46,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:19:46,805 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:19:46,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:19:46,973 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:19:46,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46 WrapperNode [2020-10-27 01:19:46,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:19:46,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:19:46,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:19:46,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:19:46,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:46,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:47,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:47,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:47,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:47,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:47,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (1/1) ... [2020-10-27 01:19:47,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:19:47,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:19:47,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:19:47,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:19:47,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (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 [2020-10-27 01:19:47,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:19:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:19:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:19:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:19:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:19:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-27 01:19:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-27 01:19:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-27 01:19:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:19:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:19:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:19:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:19:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:19:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:19:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:19:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:19:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:19:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:19:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:19:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:19:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:19:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:19:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:19:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:19:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:19:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:19:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:19:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:19:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:19:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:19:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:19:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:19:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:19:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:19:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:19:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-27 01:19:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-27 01:19:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-27 01:19:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:19:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:19:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:19:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:19:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:19:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:19:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:19:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:19:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:19:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:19:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:19:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:19:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:19:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:19:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:19:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:19:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:19:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:19:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:19:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:19:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:19:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:19:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:19:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:19:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:19:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:19:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:19:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:19:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:19:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:19:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:19:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:19:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:19:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:19:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:19:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:19:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:19:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:19:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:19:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:19:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:19:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:19:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:19:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:19:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:19:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:19:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:19:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:19:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:19:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:19:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:19:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:19:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:19:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:19:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:19:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:19:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:19:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:19:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:19:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:19:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:19:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:19:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:19:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:19:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:19:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:19:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:19:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:19:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:19:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:19:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:19:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:19:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:19:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:19:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:19:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:19:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:19:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:19:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:19:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:19:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:19:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:19:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:19:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:19:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:19:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:19:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:19:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:19:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:19:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:19:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:19:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:19:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:19:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:19:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:19:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:19:47,823 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:19:48,046 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:19:48,046 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 01:19:48,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:19:48 BoogieIcfgContainer [2020-10-27 01:19:48,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:19:48,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:19:48,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:19:48,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:19:48,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:19:46" (1/3) ... [2020-10-27 01:19:48,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf49b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:19:48, skipping insertion in model container [2020-10-27 01:19:48,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:46" (2/3) ... [2020-10-27 01:19:48,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf49b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:19:48, skipping insertion in model container [2020-10-27 01:19:48,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:19:48" (3/3) ... [2020-10-27 01:19:48,058 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-10-27 01:19:48,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:19:48,077 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:19:48,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:19:48,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:19:48,121 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:19:48,121 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:19:48,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:19:48,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:19:48,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:19:48,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:19:48,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:19:48,140 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-27 01:19:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:19:48,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:48,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:48,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:48,155 INFO L82 PathProgramCache]: Analyzing trace with hash 455186036, now seen corresponding path program 1 times [2020-10-27 01:19:48,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:48,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102798990] [2020-10-27 01:19:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:49,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:49,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:19:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:19:49,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-27 01:19:49,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:19:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:19:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:19:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:19:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:49,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:49,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:49,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:19:49,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:19:49,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102798990] [2020-10-27 01:19:49,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:19:49,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:19:49,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051529828] [2020-10-27 01:19:49,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:19:49,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:49,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:19:49,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:19:49,310 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 5 states. [2020-10-27 01:19:49,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:49,600 INFO L93 Difference]: Finished difference Result 75 states and 108 transitions. [2020-10-27 01:19:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:19:49,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-27 01:19:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:49,612 INFO L225 Difference]: With dead ends: 75 [2020-10-27 01:19:49,612 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 01:19:49,616 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 [2020-10-27 01:19:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 01:19:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-27 01:19:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 01:19:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-27 01:19:49,693 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 18 [2020-10-27 01:19:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:49,694 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-27 01:19:49,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:19:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-27 01:19:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:19:49,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:49,698 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] [2020-10-27 01:19:49,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:19:49,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:49,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:49,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1744908651, now seen corresponding path program 1 times [2020-10-27 01:19:49,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:49,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231915211] [2020-10-27 01:19:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:50,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:19:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-27 01:19:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:19:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 01:19:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:19:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:50,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:50,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:19:50,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:19:50,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231915211] [2020-10-27 01:19:50,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:19:50,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:19:50,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972839945] [2020-10-27 01:19:50,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:19:50,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:50,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:19:50,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:19:50,416 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-27 01:19:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:50,643 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-10-27 01:19:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:19:50,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 01:19:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:50,645 INFO L225 Difference]: With dead ends: 43 [2020-10-27 01:19:50,645 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 01:19:50,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:19:50,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 01:19:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-27 01:19:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 01:19:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-27 01:19:50,655 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 26 [2020-10-27 01:19:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:50,656 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-27 01:19:50,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:19:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-27 01:19:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 01:19:50,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:50,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:50,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:19:50,658 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1289219814, now seen corresponding path program 1 times [2020-10-27 01:19:50,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:50,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093890714] [2020-10-27 01:19:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:19:50,686 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:19:50,686 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:19:50,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:19:50,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:19:50 BoogieIcfgContainer [2020-10-27 01:19:50,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:19:50,720 INFO L168 Benchmark]: Toolchain (without parser) took 4430.22 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 136.1 MB in the beginning and 127.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:50,722 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 161.5 MB. Free memory was 132.1 MB in the beginning and 132.1 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:19:50,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.59 ms. Allocated memory is still 161.5 MB. Free memory was 135.6 MB in the beginning and 112.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:50,724 INFO L168 Benchmark]: Boogie Preprocessor took 72.99 ms. Allocated memory is still 161.5 MB. Free memory was 112.9 MB in the beginning and 110.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:50,725 INFO L168 Benchmark]: RCFGBuilder took 999.54 ms. Allocated memory is still 161.5 MB. Free memory was 110.1 MB in the beginning and 101.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:50,728 INFO L168 Benchmark]: TraceAbstraction took 2665.54 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 101.0 MB in the beginning and 127.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:50,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 161.5 MB. Free memory was 132.1 MB in the beginning and 132.1 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 680.59 ms. Allocated memory is still 161.5 MB. Free memory was 135.6 MB in the beginning and 112.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.99 ms. Allocated memory is still 161.5 MB. Free memory was 112.9 MB in the beginning and 110.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 999.54 ms. Allocated memory is still 161.5 MB. Free memory was 110.1 MB in the beginning and 101.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2665.54 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 101.0 MB in the beginning and 127.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 21 SDslu, 118 SDs, 0 SdLazy, 156 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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...