/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:10:05,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:10:05,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:10:05,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:10:05,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:10:05,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:10:05,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:10:05,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:10:05,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:10:05,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:10:05,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:10:05,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:10:05,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:10:05,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:10:05,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:10:05,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:10:05,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:10:05,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:10:05,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:10:05,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:10:05,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:10:05,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:10:05,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:10:05,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:10:05,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:10:05,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:10:05,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:10:05,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:10:05,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:10:05,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:10:05,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:10:05,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:10:05,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:10:05,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:10:05,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:10:05,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:10:05,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:10:05,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:10:05,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:10:05,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:10:05,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:10:05,492 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 [2020-09-25 09:10:05,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:10:05,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:10:05,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:10:05,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:10:05,522 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:10:05,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:10:05,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:10:05,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:10:05,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:10:05,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:10:05,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:10:05,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:10:05,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:10:05,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:10:05,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:10:05,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:10:05,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:10:05,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:10:05,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:10:05,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:10:05,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:10:05,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:10:05,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:10:05,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:10:05,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:10:05,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:10:05,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:10:05,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:10:05,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:10:05,527 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:10:06,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:10:06,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:10:06,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:10:06,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:10:06,045 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:10:06,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2020-09-25 09:10:06,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8032b848a/59535082ed884c78bb735a5a4fd804d3/FLAGdc3367433 [2020-09-25 09:10:06,723 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:10:06,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/bubble_sort-2.i [2020-09-25 09:10:06,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8032b848a/59535082ed884c78bb735a5a4fd804d3/FLAGdc3367433 [2020-09-25 09:10:07,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8032b848a/59535082ed884c78bb735a5a4fd804d3 [2020-09-25 09:10:07,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:10:07,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:10:07,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:07,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:10:07,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:10:07,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49eb7855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07, skipping insertion in model container [2020-09-25 09:10:07,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:10:07,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:10:07,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:07,484 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:10:07,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:07,726 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:10:07,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07 WrapperNode [2020-09-25 09:10:07,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:07,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:10:07,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:10:07,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:10:07,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (1/1) ... [2020-09-25 09:10:07,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:10:07,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:10:07,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:10:07,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:10:07,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (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 [2020-09-25 09:10:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:10:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:10:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-25 09:10:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-09-25 09:10:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-09-25 09:10:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2020-09-25 09:10:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-25 09:10:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2020-09-25 09:10:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2020-09-25 09:10:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2020-09-25 09:10:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2020-09-25 09:10:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2020-09-25 09:10:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2020-09-25 09:10:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2020-09-25 09:10:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:10:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:10:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 09:10:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-09-25 09:10:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-09-25 09:10:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 09:10:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 09:10:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:10:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:10:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-25 09:10:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:10:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-09-25 09:10:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 09:10:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-09-25 09:10:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 09:10:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2020-09-25 09:10:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-25 09:10:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2020-09-25 09:10:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2020-09-25 09:10:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 09:10:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 09:10:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2020-09-25 09:10:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2020-09-25 09:10:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:10:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2020-09-25 09:10:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 09:10:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2020-09-25 09:10:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2020-09-25 09:10:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:10:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:10:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 09:10:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 09:10:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:10:08,596 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2020-09-25 09:10:09,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:10:09,149 INFO L295 CfgBuilder]: Removed 23 assume(true) statements. [2020-09-25 09:10:09,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:09 BoogieIcfgContainer [2020-09-25 09:10:09,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:10:09,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:10:09,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:10:09,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:10:09,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:10:07" (1/3) ... [2020-09-25 09:10:09,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aea1b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:09, skipping insertion in model container [2020-09-25 09:10:09,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:07" (2/3) ... [2020-09-25 09:10:09,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aea1b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:09, skipping insertion in model container [2020-09-25 09:10:09,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:09" (3/3) ... [2020-09-25 09:10:09,175 INFO L109 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2020-09-25 09:10:09,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:10:09,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:10:09,216 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:10:09,251 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:10:09,251 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:10:09,251 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:10:09,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:10:09,252 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:10:09,252 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:10:09,252 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:10:09,252 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:10:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2020-09-25 09:10:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 09:10:09,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:09,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:09,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash 414164272, now seen corresponding path program 1 times [2020-09-25 09:10:09,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:09,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066511389] [2020-09-25 09:10:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:09,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:10,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:10,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 09:10:10,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:10:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-25 09:10:10,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:10,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 09:10:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:10:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:10,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:10,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:10:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:10:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:10,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:10:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:10,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:10,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:10,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:10:10,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:10,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 09:10:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:10,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066511389] [2020-09-25 09:10:10,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:10,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:10:10,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154749831] [2020-09-25 09:10:10,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:10:10,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:10,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:10:10,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:10:10,303 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 4 states. [2020-09-25 09:10:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:11,001 INFO L93 Difference]: Finished difference Result 1190 states and 1360 transitions. [2020-09-25 09:10:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:10:11,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 09:10:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:11,024 INFO L225 Difference]: With dead ends: 1190 [2020-09-25 09:10:11,024 INFO L226 Difference]: Without dead ends: 565 [2020-09-25 09:10:11,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:10:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-09-25 09:10:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 529. [2020-09-25 09:10:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-09-25 09:10:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 552 transitions. [2020-09-25 09:10:11,134 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 552 transitions. Word has length 150 [2020-09-25 09:10:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:11,135 INFO L479 AbstractCegarLoop]: Abstraction has 529 states and 552 transitions. [2020-09-25 09:10:11,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:10:11,135 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 552 transitions. [2020-09-25 09:10:11,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 09:10:11,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:11,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:11,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:10:11,142 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:11,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:11,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1265662650, now seen corresponding path program 1 times [2020-09-25 09:10:11,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:11,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292775398] [2020-09-25 09:10:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:12,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:12,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 09:10:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-09-25 09:10:12,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:12,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:10:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:10:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-09-25 09:10:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:12,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:12,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:10:12,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 09:10:12,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:12,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:10:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:10:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 09:10:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:13,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:13,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:10:13,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 09:10:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:13,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:13,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:10:13,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 09:10:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:13,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 09:10:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 09:10:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 09:10:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:13,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:10:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:13,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:13,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:13,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:10:13,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:13,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:10:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:13,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:13,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:13,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 09:10:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:13,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:13,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:10:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:10:13,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:13,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:13,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292775398] [2020-09-25 09:10:13,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:13,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 09:10:13,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487253970] [2020-09-25 09:10:13,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:10:13,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:13,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:10:13,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:10:13,692 INFO L87 Difference]: Start difference. First operand 529 states and 552 transitions. Second operand 9 states. [2020-09-25 09:10:16,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:16,778 INFO L93 Difference]: Finished difference Result 898 states and 946 transitions. [2020-09-25 09:10:16,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:10:16,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 222 [2020-09-25 09:10:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:16,792 INFO L225 Difference]: With dead ends: 898 [2020-09-25 09:10:16,795 INFO L226 Difference]: Without dead ends: 893 [2020-09-25 09:10:16,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:10:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-25 09:10:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 841. [2020-09-25 09:10:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-09-25 09:10:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 880 transitions. [2020-09-25 09:10:16,864 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 880 transitions. Word has length 222 [2020-09-25 09:10:16,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:16,865 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 880 transitions. [2020-09-25 09:10:16,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:10:16,865 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 880 transitions. [2020-09-25 09:10:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 09:10:16,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:16,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:16,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:10:16,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:16,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1368820130, now seen corresponding path program 1 times [2020-09-25 09:10:16,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:16,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232169221] [2020-09-25 09:10:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 09:10:16,964 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 09:10:16,964 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 09:10:16,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:10:17,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:10:17 BoogieIcfgContainer [2020-09-25 09:10:17,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:10:17,008 INFO L168 Benchmark]: Toolchain (without parser) took 9980.78 ms. Allocated memory was 147.3 MB in the beginning and 323.5 MB in the end (delta: 176.2 MB). Free memory was 103.1 MB in the beginning and 130.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 148.9 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:17,009 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 09:10:17,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.22 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 175.5 MB in the end (delta: -73.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:17,011 INFO L168 Benchmark]: Boogie Preprocessor took 98.70 ms. Allocated memory is still 204.5 MB. Free memory was 175.5 MB in the beginning and 171.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:17,012 INFO L168 Benchmark]: RCFGBuilder took 1337.20 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 171.5 MB in the beginning and 185.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:17,013 INFO L168 Benchmark]: TraceAbstraction took 7838.99 ms. Allocated memory was 236.5 MB in the beginning and 323.5 MB in the end (delta: 87.0 MB). Free memory was 185.3 MB in the beginning and 130.4 MB in the end (delta: 54.9 MB). Peak memory consumption was 142.0 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:17,017 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 694.22 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 175.5 MB in the end (delta: -73.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.70 ms. Allocated memory is still 204.5 MB. Free memory was 175.5 MB in the beginning and 171.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1337.20 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 171.5 MB in the beginning and 185.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7838.99 ms. Allocated memory was 236.5 MB in the beginning and 323.5 MB in the end (delta: 87.0 MB). Free memory was 185.3 MB in the beginning and 130.4 MB in the end (delta: 54.9 MB). Peak memory consumption was 142.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 35]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L41] struct list_head gl_list = {& gl_list, & gl_list}; [L824] struct list_head const *__cil_tmp1 ; [L825] struct list_head const *__cil_tmp2 ; [L828] CALL gl_read() [L665] int tmp ; [L666] int tmp___0 ; [L669] COND TRUE 1 [L672] tmp = __VERIFIER_nondet_int() [L673] CALL gl_insert(tmp) [L611] struct node *node ; [L612] void *tmp ; [L613] unsigned int __cil_tmp4 ; [L614] unsigned int __cil_tmp5 ; [L615] unsigned int __cil_tmp6 ; [L616] struct list_head *__cil_tmp7 ; [L617] unsigned int __cil_tmp8 ; [L618] unsigned int __cil_tmp9 ; [L619] unsigned int __cil_tmp10 ; [L620] unsigned int __cil_tmp11 ; [L621] unsigned int __cil_tmp12 ; [L622] unsigned int __cil_tmp13 ; [L623] unsigned int __cil_tmp14 ; [L624] unsigned int __cil_tmp15 ; [L627] __cil_tmp4 = (unsigned int )20UL [L628] tmp = malloc(__cil_tmp4) [L629] node = (struct node *)tmp [L631] COND FALSE !(! node) [L638] *((int *)node) = value [L639] __cil_tmp5 = (unsigned int )node [L640] __cil_tmp6 = __cil_tmp5 + 4 [L641] __cil_tmp7 = (struct list_head *)__cil_tmp6 [L642] CALL list_add(__cil_tmp7, & gl_list) [L584] struct list_head *__cil_tmp3 ; [L587] EXPR \read(*head) [L587] __cil_tmp3 = *((struct list_head **)head) [L588] CALL __list_add(new, head, __cil_tmp3) [L556] unsigned int __cil_tmp4 ; [L557] unsigned int __cil_tmp5 ; [L558] unsigned int __cil_tmp6 ; [L559] unsigned int __cil_tmp7 ; [L561] __cil_tmp4 = (unsigned int )next [L562] __cil_tmp5 = __cil_tmp4 + 4 [L563] *((struct list_head **)__cil_tmp5) = new [L564] *((struct list_head **)new) = next [L565] __cil_tmp6 = (unsigned int )new [L566] __cil_tmp7 = __cil_tmp6 + 4 [L567] *((struct list_head **)__cil_tmp7) = prev [L568] *((struct list_head **)prev) = new [L588] RET __list_add(new, head, __cil_tmp3) [L642] RET list_add(__cil_tmp7, & gl_list) [L645] COND TRUE 1 [L647] __cil_tmp8 = (unsigned int )node [L648] __cil_tmp9 = __cil_tmp8 + 12 [L649] __cil_tmp10 = (unsigned int )node [L650] __cil_tmp11 = __cil_tmp10 + 12 [L651] *((struct list_head **)__cil_tmp9) = (struct list_head *)__cil_tmp11 [L652] __cil_tmp12 = (unsigned int )node [L653] __cil_tmp13 = __cil_tmp12 + 12 [L654] __cil_tmp14 = (unsigned int )node [L655] __cil_tmp15 = __cil_tmp14 + 12 [L656] *((struct list_head **)__cil_tmp13) = (struct list_head *)__cil_tmp15 [L673] RET gl_insert(tmp) [L674] tmp___0 = __VERIFIER_nondet_int() [L676] COND FALSE !(\read(tmp___0)) [L828] RET gl_read() [L829] __cil_tmp1 = (struct list_head const *)(& gl_list) [L830] CALL inspect(__cil_tmp1) [L44] struct node const *node ; [L45] unsigned int __cil_tmp3 ; [L46] struct list_head *__cil_tmp4 ; [L47] unsigned int __cil_tmp5 ; [L48] int __cil_tmp6 ; [L49] unsigned int __cil_tmp7 ; [L50] unsigned int __cil_tmp8 ; [L51] unsigned int __cil_tmp9 ; [L52] struct list_head *__cil_tmp10 ; [L53] unsigned int __cil_tmp11 ; [L54] int __cil_tmp12 ; [L55] unsigned int __cil_tmp13 ; [L56] unsigned int __cil_tmp14 ; [L57] struct list_head *__cil_tmp15 ; [L58] unsigned int __cil_tmp16 ; [L59] struct list_head *__cil_tmp17 ; [L60] unsigned int __cil_tmp18 ; [L61] int __cil_tmp19 ; [L62] unsigned int __cil_tmp20 ; [L63] unsigned int __cil_tmp21 ; [L64] unsigned int __cil_tmp22 ; [L65] struct list_head *__cil_tmp23 ; [L66] unsigned int __cil_tmp24 ; [L67] int __cil_tmp25 ; [L68] struct node *__cil_tmp26 ; [L69] unsigned int __cil_tmp27 ; [L70] unsigned int __cil_tmp28 ; [L71] struct list_head *__cil_tmp29 ; [L72] unsigned long __cil_tmp30 ; [L73] char *__cil_tmp31 ; [L74] char *__cil_tmp32 ; [L75] struct node *__cil_tmp33 ; [L76] unsigned int __cil_tmp34 ; [L77] unsigned int __cil_tmp35 ; [L78] struct list_head const *__cil_tmp36 ; [L79] unsigned int __cil_tmp37 ; [L80] unsigned int __cil_tmp38 ; [L81] unsigned int __cil_tmp39 ; [L82] struct list_head *__cil_tmp40 ; [L83] unsigned int __cil_tmp41 ; [L84] int __cil_tmp42 ; [L85] unsigned int __cil_tmp43 ; [L86] unsigned int __cil_tmp44 ; [L87] struct list_head const *__cil_tmp45 ; [L88] unsigned int __cil_tmp46 ; [L89] unsigned int __cil_tmp47 ; [L90] unsigned int __cil_tmp48 ; [L91] unsigned int __cil_tmp49 ; [L92] struct list_head *__cil_tmp50 ; [L93] unsigned int __cil_tmp51 ; [L94] int __cil_tmp52 ; [L95] unsigned int __cil_tmp53 ; [L96] unsigned int __cil_tmp54 ; [L97] struct list_head const *__cil_tmp55 ; [L98] unsigned int __cil_tmp56 ; [L99] unsigned int __cil_tmp57 ; [L100] unsigned int __cil_tmp58 ; [L101] struct list_head *__cil_tmp59 ; [L102] unsigned int __cil_tmp60 ; [L103] int __cil_tmp61 ; [L104] unsigned int __cil_tmp62 ; [L105] unsigned int __cil_tmp63 ; [L106] struct list_head const *__cil_tmp64 ; [L107] unsigned int __cil_tmp65 ; [L108] unsigned int __cil_tmp66 ; [L109] unsigned int __cil_tmp67 ; [L110] unsigned int __cil_tmp68 ; [L111] struct list_head *__cil_tmp69 ; [L112] unsigned int __cil_tmp70 ; [L113] int __cil_tmp71 ; [L114] struct node const *__cil_tmp72 ; [L115] unsigned int __cil_tmp73 ; [L116] unsigned int __cil_tmp74 ; [L117] int __cil_tmp75 ; [L118] unsigned int __cil_tmp76 ; [L119] unsigned int __cil_tmp77 ; [L120] struct list_head const *__cil_tmp78 ; [L121] struct node const *__cil_tmp79 ; [L122] unsigned int __cil_tmp80 ; [L123] unsigned int __cil_tmp81 ; [L124] int __cil_tmp82 ; [L125] int const *__cil_tmp83 ; [L126] struct node const *__cil_tmp84 ; [L127] unsigned int __cil_tmp85 ; [L128] unsigned int __cil_tmp86 ; [L129] int __cil_tmp87 ; [L130] unsigned int __cil_tmp88 ; [L131] unsigned int __cil_tmp89 ; [L132] struct list_head *__cil_tmp90 ; [L133] unsigned int __cil_tmp91 ; [L134] unsigned int __cil_tmp92 ; [L135] struct list_head *__cil_tmp93 ; [L136] unsigned int __cil_tmp94 ; [L137] unsigned int __cil_tmp95 ; [L138] int __cil_tmp96 ; [L139] unsigned int __cil_tmp97 ; [L140] unsigned int __cil_tmp98 ; [L141] unsigned int __cil_tmp99 ; [L142] struct list_head *__cil_tmp100 ; [L143] struct list_head *__cil_tmp101 ; [L144] unsigned int __cil_tmp102 ; [L145] unsigned int __cil_tmp103 ; [L146] int __cil_tmp104 ; [L147] struct list_head *__cil_tmp105 ; [L148] unsigned int __cil_tmp106 ; [L149] unsigned int __cil_tmp107 ; [L150] unsigned int __cil_tmp108 ; [L151] struct list_head const *__cil_tmp109 ; [L152] unsigned int __cil_tmp110 ; [L153] struct list_head *__cil_tmp111 ; [L154] unsigned int __cil_tmp112 ; [L155] struct node *__cil_tmp113 ; [L156] unsigned int __cil_tmp114 ; [L157] unsigned int __cil_tmp115 ; [L158] struct list_head *__cil_tmp116 ; [L159] unsigned long __cil_tmp117 ; [L160] char *__cil_tmp118 ; [L161] char *__cil_tmp119 ; [L162] struct node *__cil_tmp120 ; [L163] unsigned int __cil_tmp121 ; [L164] int __cil_tmp122 ; [L168] COND TRUE 1 [L170] COND FALSE !(! head) [L181] COND TRUE 1 [L184] __cil_tmp3 = (unsigned int )head [L185] EXPR \read(*head) [L185] __cil_tmp4 = *((struct list_head * const *)head) [L186] __cil_tmp5 = (unsigned int )__cil_tmp4 [L187] __cil_tmp6 = __cil_tmp5 != __cil_tmp3 [L188] COND TRUE ! __cil_tmp6 [L190] CALL fail() [L35] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 576 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1059 SDtfs, 3849 SDslu, 265 SDs, 0 SdLazy, 1952 SolverSat, 284 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=841occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 88 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 331897 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...