/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:20:21,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:20:21,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:20:21,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:20:21,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:20:21,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:20:21,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:20:21,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:20:21,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:20:21,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:20:21,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:20:21,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:20:21,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:20:21,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:20:21,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:20:21,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:20:22,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:20:22,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:20:22,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:20:22,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:20:22,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:20:22,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:20:22,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:20:22,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:20:22,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:20:22,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:20:22,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:20:22,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:20:22,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:20:22,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:20:22,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:20:22,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:20:22,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:20:22,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:20:22,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:20:22,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:20:22,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:20:22,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:20:22,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:20:22,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:20:22,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:20:22,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:20:22,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:20:22,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:20:22,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:20:22,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:20:22,074 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:20:22,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:20:22,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:20:22,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:20:22,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:20:22,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:20:22,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:20:22,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:20:22,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:20:22,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:20:22,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:20:22,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:20:22,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:20:22,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:20:22,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:20:22,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:20:22,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:20:22,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:22,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:20:22,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:20:22,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:20:22,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:20:22,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:20:22,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:20:22,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:20:22,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:20:22,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:20:22,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:20:22,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:20:22,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:20:22,396 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:20:22,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-10-14 23:20:22,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5da642d/20bbc0bf8e394562af8f31d77c024751/FLAG6034380c6 [2020-10-14 23:20:23,050 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:20:23,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-10-14 23:20:23,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5da642d/20bbc0bf8e394562af8f31d77c024751/FLAG6034380c6 [2020-10-14 23:20:23,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5da642d/20bbc0bf8e394562af8f31d77c024751 [2020-10-14 23:20:23,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:20:23,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:20:23,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:23,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:20:23,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:20:23,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29040ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23, skipping insertion in model container [2020-10-14 23:20:23,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:20:23,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:20:23,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:23,817 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:20:23,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:23,918 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:20:23,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23 WrapperNode [2020-10-14 23:20:23,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:23,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:20:23,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:20:23,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:20:23,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... [2020-10-14 23:20:23,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:20:23,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:20:23,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:20:23,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:20:23,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:20:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:20:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:20:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:20:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:20:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:20:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:20:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:20:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:20:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:20:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:20:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:20:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:20:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:20:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:20:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:20:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:20:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:20:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:20:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:20:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:20:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:20:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:20:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:20:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:20:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:20:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:20:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:20:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:20:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:20:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:20:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:20:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:20:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:20:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:20:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:20:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:20:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:20:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:20:24,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:20:24,596 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-14 23:20:24,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:24 BoogieIcfgContainer [2020-10-14 23:20:24,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:20:24,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:20:24,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:20:24,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:20:24,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:23" (1/3) ... [2020-10-14 23:20:24,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e3f717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:24, skipping insertion in model container [2020-10-14 23:20:24,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:23" (2/3) ... [2020-10-14 23:20:24,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e3f717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:24, skipping insertion in model container [2020-10-14 23:20:24,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:24" (3/3) ... [2020-10-14 23:20:24,612 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-10-14 23:20:24,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:20:24,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-14 23:20:24,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-14 23:20:24,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:20:24,675 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:20:24,675 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:20:24,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:20:24,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:20:24,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:20:24,676 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:20:24,676 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:20:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 23:20:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:20:24,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:24,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:24,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2020-10-14 23:20:24,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:24,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454226180] [2020-10-14 23:20:24,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:25,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:25,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:20:25,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 23:20:25,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:25,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:20:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:20:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:25,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:25,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:25,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:25,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:25,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:25,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454226180] [2020-10-14 23:20:25,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:25,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:25,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840252655] [2020-10-14 23:20:25,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:25,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:25,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:25,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:25,356 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-14 23:20:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:25,593 INFO L93 Difference]: Finished difference Result 83 states and 130 transitions. [2020-10-14 23:20:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:25,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:20:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:25,614 INFO L225 Difference]: With dead ends: 83 [2020-10-14 23:20:25,614 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:20:25,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:20:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-14 23:20:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:20:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-14 23:20:25,660 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 10 [2020-10-14 23:20:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:25,661 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-14 23:20:25,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-14 23:20:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:20:25,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:25,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:25,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:20:25,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2020-10-14 23:20:25,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:25,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184434561] [2020-10-14 23:20:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:25,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:25,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:25,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:20:25,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 23:20:25,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:25,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:20:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:25,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:25,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:25,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:25,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:20:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:25,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:25,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184434561] [2020-10-14 23:20:25,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:25,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:25,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976593404] [2020-10-14 23:20:25,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:25,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:25,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:25,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:25,965 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-14 23:20:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:26,177 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-14 23:20:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:20:26,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 23:20:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:26,179 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:20:26,179 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:20:26,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:20:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-14 23:20:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 23:20:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-14 23:20:26,198 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 14 [2020-10-14 23:20:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:26,199 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-14 23:20:26,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-10-14 23:20:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:20:26,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:26,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:26,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:20:26,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:26,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:26,208 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2020-10-14 23:20:26,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:26,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739514776] [2020-10-14 23:20:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:20:26,234 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:20:26,234 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:20:26,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:20:26,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:20:26 BoogieIcfgContainer [2020-10-14 23:20:26,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:20:26,260 INFO L168 Benchmark]: Toolchain (without parser) took 2933.41 ms. Allocated memory was 147.3 MB in the beginning and 233.3 MB in the end (delta: 86.0 MB). Free memory was 102.7 MB in the beginning and 109.0 MB in the end (delta: -6.3 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:26,261 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 23:20:26,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.14 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 171.8 MB in the end (delta: -69.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:26,263 INFO L168 Benchmark]: Boogie Preprocessor took 66.49 ms. Allocated memory is still 204.5 MB. Free memory was 171.8 MB in the beginning and 168.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:26,263 INFO L168 Benchmark]: RCFGBuilder took 614.80 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 124.0 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:26,264 INFO L168 Benchmark]: TraceAbstraction took 1654.78 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 123.0 MB in the beginning and 109.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:26,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 592.14 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 171.8 MB in the end (delta: -69.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.49 ms. Allocated memory is still 204.5 MB. Free memory was 171.8 MB in the beginning and 168.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 614.80 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 124.0 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1654.78 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 123.0 MB in the beginning and 109.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = head [L988] head->data = 0 [L990] SLL* x = head; [L991] int state = 1; [L994] COND FALSE !(__VERIFIER_nondet_int()) [L1016] x->data = state [L1018] EXPR head->next [L1018] x = head->next [L1019] COND FALSE !(!(((void*)0) != x)) [L1021] EXPR x->data [L1021] COND TRUE x->data != 0 [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] EXPR x->data [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1023] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 69 SDslu, 117 SDs, 0 SdLazy, 177 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, 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, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1937 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...