/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:23:11,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:23:11,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:23:11,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:23:11,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:23:11,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:23:11,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:23:11,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:23:11,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:23:11,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:23:11,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:23:11,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:23:11,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:23:11,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:23:11,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:23:11,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:23:11,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:23:11,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:23:11,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:23:11,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:23:11,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:23:11,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:23:11,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:23:11,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:23:11,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:23:11,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:23:11,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:23:11,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:23:11,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:23:11,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:23:11,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:23:11,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:23:11,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:23:11,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:23:11,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:23:11,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:23:11,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:23:11,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:23:11,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:23:11,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:23:11,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:23:11,911 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 [2020-09-21 11:23:11,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:23:11,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:23:11,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:23:11,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:23:11,961 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:23:11,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:23:11,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:23:11,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:23:11,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:23:11,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:23:11,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:23:11,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:23:11,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:23:11,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:23:11,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:23:11,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:23:11,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:23:11,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:23:11,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:23:11,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:23:11,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:23:11,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:23:11,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:23:11,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:23:11,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:23:11,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:23:11,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:23:11,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:23:11,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:23:11,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:23:12,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:23:12,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:23:12,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:23:12,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:23:12,442 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:23:12,443 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2020-09-21 11:23:12,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1837a0147/8fdc91e563c94a50a7e2c50323416a81/FLAGd9046e76c [2020-09-21 11:23:13,121 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:23:13,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/simple-1.i [2020-09-21 11:23:13,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1837a0147/8fdc91e563c94a50a7e2c50323416a81/FLAGd9046e76c [2020-09-21 11:23:13,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1837a0147/8fdc91e563c94a50a7e2c50323416a81 [2020-09-21 11:23:13,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:23:13,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:23:13,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:13,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:23:13,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:23:13,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:13" (1/1) ... [2020-09-21 11:23:13,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:13, skipping insertion in model container [2020-09-21 11:23:13,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:13" (1/1) ... [2020-09-21 11:23:13,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:23:13,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:23:13,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:13,965 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:23:14,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:14,107 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:23:14,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14 WrapperNode [2020-09-21 11:23:14,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:14,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:23:14,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:23:14,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:23:14,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (1/1) ... [2020-09-21 11:23:14,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (1/1) ... [2020-09-21 11:23:14,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (1/1) ... [2020-09-21 11:23:14,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (1/1) ... [2020-09-21 11:23:14,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (1/1) ... [2020-09-21 11:23:14,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (1/1) ... [2020-09-21 11:23:14,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (1/1) ... [2020-09-21 11:23:14,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:23:14,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:23:14,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:23:14,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:23:14,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (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 [2020-09-21 11:23:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:23:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:23:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 11:23:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 11:23:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-21 11:23:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-21 11:23:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-21 11:23:14,282 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-21 11:23:14,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:23:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:23:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:23:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 11:23:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 11:23:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 11:23:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 11:23:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 11:23:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 11:23:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 11:23:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 11:23:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 11:23:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 11:23:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 11:23:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 11:23:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 11:23:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 11:23:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 11:23:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 11:23:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 11:23:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 11:23:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-21 11:23:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-21 11:23:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-21 11:23:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 11:23:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 11:23:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 11:23:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 11:23:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 11:23:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 11:23:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 11:23:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 11:23:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 11:23:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 11:23:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 11:23:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 11:23:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 11:23:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 11:23:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 11:23:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 11:23:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 11:23:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 11:23:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 11:23:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 11:23:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 11:23:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 11:23:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 11:23:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 11:23:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 11:23:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 11:23:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 11:23:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 11:23:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 11:23:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 11:23:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 11:23:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 11:23:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 11:23:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 11:23:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:23:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:23:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 11:23:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:23:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 11:23:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 11:23:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 11:23:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 11:23:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:23:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 11:23:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 11:23:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 11:23:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:23:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 11:23:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 11:23:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 11:23:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 11:23:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 11:23:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 11:23:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 11:23:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 11:23:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 11:23:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 11:23:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 11:23:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 11:23:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 11:23:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 11:23:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 11:23:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 11:23:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 11:23:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 11:23:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 11:23:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 11:23:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 11:23:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 11:23:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 11:23:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 11:23:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 11:23:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 11:23:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 11:23:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 11:23:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 11:23:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 11:23:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 11:23:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 11:23:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 11:23:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 11:23:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 11:23:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 11:23:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 11:23:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 11:23:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 11:23:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-21 11:23:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:23:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:23:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:23:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:23:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:23:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:23:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:23:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:23:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:23:14,717 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-21 11:23:14,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:23:14,840 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 11:23:14,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:14 BoogieIcfgContainer [2020-09-21 11:23:14,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:23:14,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:23:14,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:23:14,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:23:14,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:23:13" (1/3) ... [2020-09-21 11:23:14,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e89594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:14, skipping insertion in model container [2020-09-21 11:23:14,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:14" (2/3) ... [2020-09-21 11:23:14,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e89594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:14, skipping insertion in model container [2020-09-21 11:23:14,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:14" (3/3) ... [2020-09-21 11:23:14,855 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-1.i [2020-09-21 11:23:14,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:23:14,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:23:14,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:23:14,922 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:23:14,922 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:23:14,922 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:23:14,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:23:14,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:23:14,923 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:23:14,923 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:23:14,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:23:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-21 11:23:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:23:14,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:14,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:14,950 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:14,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1710443637, now seen corresponding path program 1 times [2020-09-21 11:23:14,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:14,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492295670] [2020-09-21 11:23:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:15,125 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:15,125 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:15,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:15,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:15,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:23:15,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:23:15,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:15,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:15,207 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:15,207 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:15,207 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:15,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:15,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:15,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:15,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492295670] [2020-09-21 11:23:15,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:15,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:15,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311899098] [2020-09-21 11:23:15,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:15,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:15,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:15,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:15,255 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-09-21 11:23:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:15,357 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-09-21 11:23:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:15,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-21 11:23:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:15,369 INFO L225 Difference]: With dead ends: 38 [2020-09-21 11:23:15,370 INFO L226 Difference]: Without dead ends: 18 [2020-09-21 11:23:15,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-21 11:23:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-21 11:23:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-21 11:23:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-21 11:23:15,414 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-09-21 11:23:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:15,414 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-21 11:23:15,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-21 11:23:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:23:15,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:15,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:15,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:23:15,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:15,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1041507629, now seen corresponding path program 1 times [2020-09-21 11:23:15,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:15,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142573108] [2020-09-21 11:23:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:15,513 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:15,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:15,514 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:15,514 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:15,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:23:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 11:23:15,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:23:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:15,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:15,626 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:15,626 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:15,626 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:15,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:15,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:15,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:15,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:15,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:15,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142573108] [2020-09-21 11:23:15,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:15,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:23:15,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876643947] [2020-09-21 11:23:15,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:23:15,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:15,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:23:15,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:23:15,639 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-09-21 11:23:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:15,750 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-09-21 11:23:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:23:15,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-21 11:23:15,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:15,752 INFO L225 Difference]: With dead ends: 33 [2020-09-21 11:23:15,753 INFO L226 Difference]: Without dead ends: 31 [2020-09-21 11:23:15,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:23:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-21 11:23:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-09-21 11:23:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-21 11:23:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-09-21 11:23:15,761 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-09-21 11:23:15,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:15,761 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-09-21 11:23:15,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:23:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-09-21 11:23:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:23:15,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:15,763 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:15,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:23:15,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash 714847529, now seen corresponding path program 1 times [2020-09-21 11:23:15,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:15,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125388696] [2020-09-21 11:23:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:15,876 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:23:15,876 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:23:15,876 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:23:15,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:23:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-21 11:23:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:23:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:23:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:16,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:16,004 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:16,004 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:16,004 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:16,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:23:16,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:16,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:23:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:16,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125388696] [2020-09-21 11:23:16,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:23:16,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:23:16,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357331423] [2020-09-21 11:23:16,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:23:16,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:16,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:23:16,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:23:16,017 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-09-21 11:23:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:16,098 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-09-21 11:23:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:23:16,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-21 11:23:16,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:16,100 INFO L225 Difference]: With dead ends: 37 [2020-09-21 11:23:16,100 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 11:23:16,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:23:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 11:23:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2020-09-21 11:23:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-21 11:23:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-09-21 11:23:16,106 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2020-09-21 11:23:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:16,106 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-09-21 11:23:16,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:23:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-09-21 11:23:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:23:16,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:16,108 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:16,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:23:16,108 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:16,109 INFO L82 PathProgramCache]: Analyzing trace with hash -158216428, now seen corresponding path program 1 times [2020-09-21 11:23:16,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:16,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705006393] [2020-09-21 11:23:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:23:16,138 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:23:16,138 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:23:16,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:23:16,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:23:16 BoogieIcfgContainer [2020-09-21 11:23:16,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:23:16,179 INFO L168 Benchmark]: Toolchain (without parser) took 2749.49 ms. Allocated memory was 140.5 MB in the beginning and 236.5 MB in the end (delta: 95.9 MB). Free memory was 101.9 MB in the beginning and 147.2 MB in the end (delta: -45.3 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:16,181 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-21 11:23:16,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.97 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 171.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:16,184 INFO L168 Benchmark]: Boogie Preprocessor took 78.76 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 168.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:16,186 INFO L168 Benchmark]: RCFGBuilder took 657.52 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 125.9 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:16,193 INFO L168 Benchmark]: TraceAbstraction took 1326.22 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 125.9 MB in the beginning and 147.2 MB in the end (delta: -21.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:16,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.97 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 171.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.76 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 168.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 657.52 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 125.9 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1326.22 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 125.9 MB in the beginning and 147.2 MB in the end (delta: -21.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 538]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] a->h = 2 [L526] COND TRUE __VERIFIER_nondet_int() [L527] p->h = 1 [L528] t = (List) malloc(sizeof(struct node)) [L529] COND FALSE !(t == 0) [L530] p->n = t [L531] EXPR p->n [L531] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L533] p->h = 2 [L534] p->n = 0 [L535] p = a [L536] COND TRUE p!=0 [L537] EXPR p->h [L537] COND TRUE p->h != 2 [L538] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 19 SDslu, 75 SDs, 0 SdLazy, 118 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 2524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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...