./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c11ac37b43be66e9ce0dd54a8292c8a5449b189d ........................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:06:56,876 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:06:56,877 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:06:56,892 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:06:56,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:06:56,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:06:56,895 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:06:56,897 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:06:56,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:06:56,900 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:06:56,901 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:06:56,901 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:06:56,902 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:06:56,903 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:06:56,904 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:06:56,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:06:56,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:06:56,908 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:06:56,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:06:56,912 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:06:56,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:06:56,915 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:06:56,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:06:56,919 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:06:56,919 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:06:56,920 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:06:56,921 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:06:56,922 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:06:56,923 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:06:56,925 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:06:56,925 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:06:56,926 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:06:56,926 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:06:56,927 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:06:56,928 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:06:56,928 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:06:56,929 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:06:56,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:06:56,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:06:56,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:06:56,949 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:06:56,950 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:06:56,950 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:06:56,951 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:06:56,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:06:56,951 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:06:56,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:06:56,951 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:06:56,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:06:56,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:06:56,952 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:06:56,952 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:06:56,952 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:06:56,952 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:06:56,954 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:06:56,954 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:06:56,954 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:06:56,954 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:06:56,955 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:06:56,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:06:56,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:06:56,955 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:06:56,955 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:06:56,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:06:56,956 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:06:56,956 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:06:56,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:06:56,957 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c11ac37b43be66e9ce0dd54a8292c8a5449b189d [2018-11-28 18:06:57,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:06:57,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:06:57,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:06:57,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:06:57,029 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:06:57,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i [2018-11-28 18:06:57,094 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56cabc83/fd911cee5f2a4aaa9b21602002de384f/FLAG117c3f5d0 [2018-11-28 18:06:57,560 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:06:57,561 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/1_3_true-termination.c_false-unreach-call.i [2018-11-28 18:06:57,568 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56cabc83/fd911cee5f2a4aaa9b21602002de384f/FLAG117c3f5d0 [2018-11-28 18:06:57,898 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56cabc83/fd911cee5f2a4aaa9b21602002de384f [2018-11-28 18:06:57,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:06:57,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:06:57,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:06:57,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:06:57,910 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:06:57,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:06:57" (1/1) ... [2018-11-28 18:06:57,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c029a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:57, skipping insertion in model container [2018-11-28 18:06:57,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:06:57" (1/1) ... [2018-11-28 18:06:57,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:06:57,948 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:06:58,110 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:06:58,121 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:06:58,139 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:06:58,156 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:06:58,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58 WrapperNode [2018-11-28 18:06:58,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:06:58,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:06:58,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:06:58,158 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:06:58,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:06:58,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:06:58,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:06:58,188 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:06:58,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... [2018-11-28 18:06:58,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:06:58,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:06:58,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:06:58,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:06:58,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2018-11-28 18:06:58,338 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2018-11-28 18:06:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2018-11-28 18:06:58,338 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-28 18:06:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-28 18:06:58,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:06:58,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:06:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2018-11-28 18:06:58,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2018-11-28 18:06:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2018-11-28 18:06:58,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2018-11-28 18:06:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:06:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:06:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:06:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:06:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:06:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:06:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:06:58,672 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:06:58,672 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 18:06:58,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:06:58 BoogieIcfgContainer [2018-11-28 18:06:58,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:06:58,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:06:58,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:06:58,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:06:58,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:06:57" (1/3) ... [2018-11-28 18:06:58,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7375fc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:06:58, skipping insertion in model container [2018-11-28 18:06:58,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:06:58" (2/3) ... [2018-11-28 18:06:58,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7375fc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:06:58, skipping insertion in model container [2018-11-28 18:06:58,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:06:58" (3/3) ... [2018-11-28 18:06:58,680 INFO L112 eAbstractionObserver]: Analyzing ICFG 1_3_true-termination.c_false-unreach-call.i [2018-11-28 18:06:58,690 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:06:58,697 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:06:58,713 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:06:58,745 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:06:58,746 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:06:58,746 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:06:58,746 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:06:58,747 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:06:58,747 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:06:58,747 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:06:58,747 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:06:58,748 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:06:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-28 18:06:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:06:58,779 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:06:58,780 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:06:58,782 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:06:58,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:06:58,788 INFO L82 PathProgramCache]: Analyzing trace with hash 546623417, now seen corresponding path program 1 times [2018-11-28 18:06:58,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:06:58,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:06:58,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:58,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:06:58,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:06:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:06:59,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:06:59,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:06:59,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:06:59,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:06:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:06:59,169 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2018-11-28 18:06:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:06:59,546 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-11-28 18:06:59,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:06:59,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-28 18:06:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:06:59,555 INFO L225 Difference]: With dead ends: 49 [2018-11-28 18:06:59,556 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 18:06:59,559 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:06:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 18:06:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-28 18:06:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 18:06:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-11-28 18:06:59,597 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2018-11-28 18:06:59,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:06:59,598 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-11-28 18:06:59,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:06:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-11-28 18:06:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:06:59,601 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:06:59,601 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:06:59,601 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:06:59,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:06:59,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1159927970, now seen corresponding path program 1 times [2018-11-28 18:06:59,604 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:06:59,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:06:59,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:59,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:06:59,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:06:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:06:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:06:59,692 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:06:59,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:06:59 BoogieIcfgContainer [2018-11-28 18:06:59,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:06:59,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:06:59,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:06:59,727 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:06:59,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:06:58" (3/4) ... [2018-11-28 18:06:59,730 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:06:59,781 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:06:59,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:06:59,782 INFO L168 Benchmark]: Toolchain (without parser) took 1879.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -127.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:59,784 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:06:59,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.92 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:59,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.74 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:06:59,785 INFO L168 Benchmark]: Boogie Preprocessor took 27.14 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:06:59,786 INFO L168 Benchmark]: RCFGBuilder took 457.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:59,787 INFO L168 Benchmark]: TraceAbstraction took 1053.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:06:59,787 INFO L168 Benchmark]: Witness Printer took 54.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:06:59,791 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.92 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.74 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.14 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 457.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1053.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. * Witness Printer took 54.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] rr * ptr1 = 0; VAL [ptr1={0:0}] [L52] CALL, EXPR getPtr() [L38] CALL, EXPR getrr() [L31] rr * r = (rr *)malloc(sizeof *r); [L32] r -> state = 0 [L33] return r; VAL [\result={6:0}, malloc(sizeof *r)={6:0}, r={6:0}] [L38] RET, EXPR getrr() VAL [getrr()={6:0}] [L38] rr * r = getrr(); [L39] r -> state = 1 [L40] return r; VAL [\result={6:0}, r={6:0}] [L52] RET, EXPR getPtr() VAL [getPtr()={6:0}, ptr1={0:0}] [L52] ptr1 = getPtr() [L53] CALL freePtr(ptr1) VAL [ptr={6:0}] [L45] EXPR ptr -> state VAL [ptr={6:0}, ptr={6:0}, ptr -> state=1] [L45] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={6:0}, ptr={6:0}, ptr -> state=1] [L46] ptr -> state = 2 VAL [ptr={6:0}, ptr={6:0}] [L53] RET freePtr(ptr1) VAL [ptr1={6:0}] [L55] CALL freePtr(ptr1) VAL [ptr={6:0}] [L45] EXPR ptr -> state VAL [ptr={6:0}, ptr={6:0}, ptr -> state=2] [L45] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={6:0}, ptr={6:0}, ptr -> state=2] [L45] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 3 SDslu, 110 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...