./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer --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 534681b11e8e68e6058985d885b01f2cbfa43e5b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:58:35,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:58:35,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:58:35,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:58:35,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:58:35,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:58:35,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:58:35,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:58:35,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:58:35,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:58:35,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:58:35,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:58:35,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:58:35,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:58:35,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:58:35,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:58:35,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:58:35,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:58:35,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:58:35,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:58:35,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:58:35,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:58:35,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:58:35,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:58:35,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:58:35,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:58:35,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:58:35,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:58:35,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:58:35,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:58:35,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:58:35,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:58:35,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:58:35,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:58:35,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:58:35,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:58:35,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:58:35,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:58:35,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:58:35,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:58:35,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:58:35,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:58:35,866 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:58:35,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:58:35,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:58:35,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:58:35,867 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:58:35,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:58:35,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:58:35,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:58:35,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:58:35,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:58:35,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:58:35,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:58:35,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:58:35,869 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:58:35,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:58:35,870 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:58:35,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:58:35,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:58:35,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:58:35,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:58:35,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:58:35,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:35,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:58:35,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:58:35,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:58:35,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:58:35,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:58:35,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:58:35,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer 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 -> 534681b11e8e68e6058985d885b01f2cbfa43e5b [2019-11-25 08:58:36,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:58:36,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:58:36,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:58:36,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:58:36,031 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:58:36,031 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2019-11-25 08:58:36,082 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/data/f3fe91bc4/6e7942de5cca4848b74ce32405928700/FLAGdc22b389f [2019-11-25 08:58:36,576 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:58:36,580 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2019-11-25 08:58:36,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/data/f3fe91bc4/6e7942de5cca4848b74ce32405928700/FLAGdc22b389f [2019-11-25 08:58:36,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/data/f3fe91bc4/6e7942de5cca4848b74ce32405928700 [2019-11-25 08:58:36,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:58:36,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:58:36,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:36,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:58:36,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:58:36,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:36" (1/1) ... [2019-11-25 08:58:36,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0d2089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:36, skipping insertion in model container [2019-11-25 08:58:36,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:36" (1/1) ... [2019-11-25 08:58:36,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:58:36,940 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:58:37,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:37,326 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:58:37,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:37,434 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:58:37,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37 WrapperNode [2019-11-25 08:58:37,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:37,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:58:37,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:58:37,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:58:37,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:58:37,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:58:37,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:58:37,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:58:37,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... [2019-11-25 08:58:37,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:58:37,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:58:37,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:58:37,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:58:37,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/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 [2019-11-25 08:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:58:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:58:37,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:58:38,407 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:58:38,408 INFO L284 CfgBuilder]: Removed 75 assume(true) statements. [2019-11-25 08:58:38,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:38 BoogieIcfgContainer [2019-11-25 08:58:38,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:58:38,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:58:38,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:58:38,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:58:38,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:58:36" (1/3) ... [2019-11-25 08:58:38,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b63fead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:38, skipping insertion in model container [2019-11-25 08:58:38,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:37" (2/3) ... [2019-11-25 08:58:38,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b63fead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:38, skipping insertion in model container [2019-11-25 08:58:38,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:38" (3/3) ... [2019-11-25 08:58:38,415 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2019-11-25 08:58:38,423 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:58:38,428 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-11-25 08:58:38,436 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-11-25 08:58:38,457 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:58:38,457 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:58:38,458 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:58:38,458 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:58:38,458 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:58:38,458 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:58:38,458 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:58:38,458 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:58:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2019-11-25 08:58:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:58:38,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:38,483 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:58:38,484 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:38,489 INFO L82 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2019-11-25 08:58:38,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:38,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331661680] [2019-11-25 08:58:38,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:38,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331661680] [2019-11-25 08:58:38,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:38,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:58:38,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466686056] [2019-11-25 08:58:38,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:58:38,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:38,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:58:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:58:38,620 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2019-11-25 08:58:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:38,644 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2019-11-25 08:58:38,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:58:38,645 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-25 08:58:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:38,655 INFO L225 Difference]: With dead ends: 196 [2019-11-25 08:58:38,655 INFO L226 Difference]: Without dead ends: 92 [2019-11-25 08:58:38,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:58:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-25 08:58:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-11-25 08:58:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-25 08:58:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2019-11-25 08:58:38,696 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2019-11-25 08:58:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:38,696 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2019-11-25 08:58:38,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:58:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2019-11-25 08:58:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:58:38,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:38,698 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:38,698 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:38,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:38,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2019-11-25 08:58:38,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:38,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298895829] [2019-11-25 08:58:38,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:38,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298895829] [2019-11-25 08:58:38,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:38,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:58:38,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105090341] [2019-11-25 08:58:38,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:58:38,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:58:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:38,745 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 3 states. [2019-11-25 08:58:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:38,784 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2019-11-25 08:58:38,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:58:38,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-25 08:58:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:38,788 INFO L225 Difference]: With dead ends: 182 [2019-11-25 08:58:38,788 INFO L226 Difference]: Without dead ends: 98 [2019-11-25 08:58:38,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-25 08:58:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2019-11-25 08:58:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-25 08:58:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2019-11-25 08:58:38,800 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2019-11-25 08:58:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:38,801 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2019-11-25 08:58:38,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:58:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2019-11-25 08:58:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:58:38,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:38,802 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:38,802 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:38,803 INFO L82 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2019-11-25 08:58:38,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:38,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205354351] [2019-11-25 08:58:38,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:38,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205354351] [2019-11-25 08:58:38,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:38,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:58:38,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642260368] [2019-11-25 08:58:38,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:38,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:38,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:38,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:38,891 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 5 states. [2019-11-25 08:58:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:39,062 INFO L93 Difference]: Finished difference Result 253 states and 288 transitions. [2019-11-25 08:58:39,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:58:39,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-25 08:58:39,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:39,066 INFO L225 Difference]: With dead ends: 253 [2019-11-25 08:58:39,068 INFO L226 Difference]: Without dead ends: 247 [2019-11-25 08:58:39,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:58:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2019-11-25 08:58:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 96. [2019-11-25 08:58:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-25 08:58:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2019-11-25 08:58:39,101 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2019-11-25 08:58:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:39,101 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2019-11-25 08:58:39,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2019-11-25 08:58:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:58:39,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:39,103 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:39,103 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:39,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2019-11-25 08:58:39,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:39,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121642031] [2019-11-25 08:58:39,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:39,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121642031] [2019-11-25 08:58:39,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:39,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:58:39,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12521054] [2019-11-25 08:58:39,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:39,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:39,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:39,250 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 5 states. [2019-11-25 08:58:39,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:39,480 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2019-11-25 08:58:39,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:39,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-25 08:58:39,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:39,483 INFO L225 Difference]: With dead ends: 125 [2019-11-25 08:58:39,484 INFO L226 Difference]: Without dead ends: 123 [2019-11-25 08:58:39,484 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:58:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-11-25 08:58:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2019-11-25 08:58:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-25 08:58:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2019-11-25 08:58:39,503 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2019-11-25 08:58:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:39,503 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2019-11-25 08:58:39,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2019-11-25 08:58:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:58:39,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:39,505 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:39,505 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:39,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:39,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2019-11-25 08:58:39,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:39,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960567645] [2019-11-25 08:58:39,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:58:39,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960567645] [2019-11-25 08:58:39,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:39,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:58:39,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60715088] [2019-11-25 08:58:39,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:39,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:39,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:39,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:39,605 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 5 states. [2019-11-25 08:58:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:39,788 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2019-11-25 08:58:39,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:39,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-25 08:58:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:39,790 INFO L225 Difference]: With dead ends: 94 [2019-11-25 08:58:39,790 INFO L226 Difference]: Without dead ends: 92 [2019-11-25 08:58:39,791 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:58:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-25 08:58:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-11-25 08:58:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-25 08:58:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2019-11-25 08:58:39,799 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2019-11-25 08:58:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:39,800 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2019-11-25 08:58:39,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2019-11-25 08:58:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:58:39,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:39,801 INFO L410 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] [2019-11-25 08:58:39,801 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:39,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2019-11-25 08:58:39,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:39,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30694037] [2019-11-25 08:58:39,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:39,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30694037] [2019-11-25 08:58:39,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:39,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:58:39,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561327502] [2019-11-25 08:58:39,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:58:39,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:39,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:58:39,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:58:39,915 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 6 states. [2019-11-25 08:58:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:40,254 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2019-11-25 08:58:40,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:58:40,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-11-25 08:58:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:40,256 INFO L225 Difference]: With dead ends: 210 [2019-11-25 08:58:40,257 INFO L226 Difference]: Without dead ends: 208 [2019-11-25 08:58:40,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:58:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-11-25 08:58:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2019-11-25 08:58:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-25 08:58:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2019-11-25 08:58:40,270 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2019-11-25 08:58:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:40,270 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2019-11-25 08:58:40,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:58:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2019-11-25 08:58:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:58:40,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:40,274 INFO L410 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] [2019-11-25 08:58:40,275 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2019-11-25 08:58:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:40,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504341349] [2019-11-25 08:58:40,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:40,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504341349] [2019-11-25 08:58:40,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:40,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:58:40,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136475998] [2019-11-25 08:58:40,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:58:40,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:40,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:58:40,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:58:40,387 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 6 states. [2019-11-25 08:58:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:40,725 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2019-11-25 08:58:40,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:58:40,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-11-25 08:58:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:40,727 INFO L225 Difference]: With dead ends: 208 [2019-11-25 08:58:40,727 INFO L226 Difference]: Without dead ends: 206 [2019-11-25 08:58:40,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:58:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-11-25 08:58:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2019-11-25 08:58:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-25 08:58:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2019-11-25 08:58:40,735 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2019-11-25 08:58:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:40,735 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2019-11-25 08:58:40,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:58:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2019-11-25 08:58:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:58:40,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:40,737 INFO L410 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] [2019-11-25 08:58:40,737 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:40,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2019-11-25 08:58:40,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:40,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222623844] [2019-11-25 08:58:40,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:40,802 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:58:40,803 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:58:40,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:58:40 BoogieIcfgContainer [2019-11-25 08:58:40,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:58:40,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:58:40,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:58:40,845 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:58:40,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:38" (3/4) ... [2019-11-25 08:58:40,848 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:58:40,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_78bf3e29-5403-403e-a6f9-e48a5a897589/bin/uautomizer/witness.graphml [2019-11-25 08:58:40,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:58:40,907 INFO L168 Benchmark]: Toolchain (without parser) took 4026.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.7 MB in the beginning and 808.7 MB in the end (delta: 132.0 MB). Peak memory consumption was 234.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:40,908 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:40,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -129.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:40,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.63 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:40,910 INFO L168 Benchmark]: Boogie Preprocessor took 62.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:40,910 INFO L168 Benchmark]: RCFGBuilder took 849.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:40,911 INFO L168 Benchmark]: TraceAbstraction took 2434.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 808.7 MB in the end (delta: 201.0 MB). Peak memory consumption was 201.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:40,911 INFO L168 Benchmark]: Witness Printer took 59.94 ms. Allocated memory is still 1.1 GB. Free memory is still 808.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:40,914 INFO L335 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 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 554.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -129.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.63 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 62.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 849.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2434.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 808.7 MB in the end (delta: 201.0 MB). Peak memory consumption was 201.0 MB. Max. memory is 11.5 GB. * Witness Printer took 59.94 ms. Allocated memory is still 1.1 GB. Free memory is still 808.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); [L630] COND FALSE !(!node) [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); [L635] COND FALSE !(!item) [L637] item->slist = node [L638] item->next = data [L639] data = item [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) [L604] COND FALSE !(!(shape)) [L605] shape->next [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) [L612] EXPR shape->next [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 13 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1418 SDslu, 979 SDs, 0 SdLazy, 502 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=7, 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, 7 MinimizatonAttempts, 396 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 9999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...