./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:03:50,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:03:50,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:03:50,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:03:50,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:03:50,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:03:50,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:03:50,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:03:50,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:03:50,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:03:50,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:03:50,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:03:50,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:03:50,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:03:50,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:03:50,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:03:50,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:03:50,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:03:50,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:03:50,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:03:50,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:03:50,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:03:50,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:03:50,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:03:50,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:03:50,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:03:50,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:03:50,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:03:50,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:03:50,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:03:50,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:03:50,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:03:50,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:03:50,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:03:50,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:03:50,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:03:50,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:03:50,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:03:50,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:03:50,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:03:50,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:03:50,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:03:50,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:03:50,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:03:50,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:03:50,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:03:50,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:03:50,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:03:50,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:03:50,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:03:50,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:03:50,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:03:50,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:03:50,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:03:50,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:03:50,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:03:50,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:03:50,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:03:50,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:03:50,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:03:50,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:03:50,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 [2021-12-06 21:03:51,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:03:51,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:03:51,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:03:51,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:03:51,037 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:03:51,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-12-06 21:03:51,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/data/7256340a2/08a8690b132f4a5ab1c942d0307d8723/FLAGd0e430d14 [2021-12-06 21:03:51,488 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:03:51,488 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-12-06 21:03:51,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/data/7256340a2/08a8690b132f4a5ab1c942d0307d8723/FLAGd0e430d14 [2021-12-06 21:03:51,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/data/7256340a2/08a8690b132f4a5ab1c942d0307d8723 [2021-12-06 21:03:51,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:03:51,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:03:51,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:03:51,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:03:51,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:03:51,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536dd877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51, skipping insertion in model container [2021-12-06 21:03:51,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:03:51,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:03:51,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-12-06 21:03:51,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:03:51,787 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:03:51,818 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-12-06 21:03:51,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:03:51,839 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:03:51,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51 WrapperNode [2021-12-06 21:03:51,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:03:51,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:03:51,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:03:51,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:03:51,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,875 INFO L137 Inliner]: procedures = 127, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-12-06 21:03:51,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:03:51,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:03:51,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:03:51,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:03:51,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:03:51,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:03:51,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:03:51,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:03:51,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (1/1) ... [2021-12-06 21:03:51,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:03:51,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:51,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:03:51,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-06 21:03:51,954 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 21:03:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 21:03:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:03:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 21:03:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:03:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:03:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:03:52,044 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:03:52,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:03:52,068 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-06 21:03:52,242 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:03:52,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:03:52,247 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 21:03:52,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:03:52 BoogieIcfgContainer [2021-12-06 21:03:52,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:03:52,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:03:52,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:03:52,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:03:52,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:03:51" (1/3) ... [2021-12-06 21:03:52,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da63452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:03:52, skipping insertion in model container [2021-12-06 21:03:52,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:51" (2/3) ... [2021-12-06 21:03:52,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da63452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:03:52, skipping insertion in model container [2021-12-06 21:03:52,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:03:52" (3/3) ... [2021-12-06 21:03:52,260 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2021-12-06 21:03:52,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:03:52,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:03:52,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:03:52,306 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:03:52,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:03:52,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 32 states have (on average 1.65625) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 21:03:52,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:52,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:52,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash -504255867, now seen corresponding path program 1 times [2021-12-06 21:03:52,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:52,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668412541] [2021-12-06 21:03:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:52,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:52,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:52,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668412541] [2021-12-06 21:03:52,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668412541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:52,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:52,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:03:52,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37012309] [2021-12-06 21:03:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:52,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:03:52,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:03:52,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 21:03:52,485 INFO L87 Difference]: Start difference. First operand has 36 states, 32 states have (on average 1.65625) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:52,499 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2021-12-06 21:03:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:03:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 21:03:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:52,507 INFO L225 Difference]: With dead ends: 64 [2021-12-06 21:03:52,507 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 21:03:52,509 INFO L932 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 [2021-12-06 21:03:52,513 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:52,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:52,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 21:03:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 21:03:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-12-06 21:03:52,539 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 15 [2021-12-06 21:03:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:52,540 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-12-06 21:03:52,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-12-06 21:03:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 21:03:52,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:52,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:52,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:03:52,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:52,543 INFO L85 PathProgramCache]: Analyzing trace with hash 775433970, now seen corresponding path program 1 times [2021-12-06 21:03:52,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:52,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794050876] [2021-12-06 21:03:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:52,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:52,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:52,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794050876] [2021-12-06 21:03:52,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794050876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:52,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:52,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:03:52,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866446151] [2021-12-06 21:03:52,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:52,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:52,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:52,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:03:52,618 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:52,632 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2021-12-06 21:03:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:52,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 21:03:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:52,633 INFO L225 Difference]: With dead ends: 52 [2021-12-06 21:03:52,633 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 21:03:52,633 INFO L932 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 [2021-12-06 21:03:52,635 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:52,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 21:03:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-12-06 21:03:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-12-06 21:03:52,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2021-12-06 21:03:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:52,642 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-12-06 21:03:52,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-12-06 21:03:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 21:03:52,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:52,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:52,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:03:52,644 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1038406110, now seen corresponding path program 1 times [2021-12-06 21:03:52,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:52,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585856279] [2021-12-06 21:03:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:52,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:52,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:52,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585856279] [2021-12-06 21:03:52,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585856279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:52,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:52,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:03:52,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841942916] [2021-12-06 21:03:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:52,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:52,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:03:52,719 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:52,738 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2021-12-06 21:03:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 21:03:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:52,739 INFO L225 Difference]: With dead ends: 57 [2021-12-06 21:03:52,739 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 21:03:52,739 INFO L932 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 [2021-12-06 21:03:52,740 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:52,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 21:03:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-12-06 21:03:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-12-06 21:03:52,745 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 20 [2021-12-06 21:03:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:52,745 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-12-06 21:03:52,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-12-06 21:03:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 21:03:52,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:52,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:52,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:03:52,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:52,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:52,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1976697508, now seen corresponding path program 1 times [2021-12-06 21:03:52,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:52,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536667349] [2021-12-06 21:03:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:52,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:52,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:52,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536667349] [2021-12-06 21:03:52,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536667349] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:52,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771990065] [2021-12-06 21:03:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:52,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:52,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:52,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:52,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:03:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:03:52,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:52,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:03:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:52,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771990065] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:03:52,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:03:52,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-06 21:03:52,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254092024] [2021-12-06 21:03:52,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:03:53,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:03:53,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:03:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:03:53,000 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:53,015 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2021-12-06 21:03:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:03:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 21:03:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:53,016 INFO L225 Difference]: With dead ends: 53 [2021-12-06 21:03:53,016 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 21:03:53,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:03:53,017 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:53,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 72 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 21:03:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-06 21:03:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-12-06 21:03:53,021 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 20 [2021-12-06 21:03:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:53,021 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-12-06 21:03:53,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-12-06 21:03:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 21:03:53,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:53,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:53,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:03:53,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:53,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1871980112, now seen corresponding path program 1 times [2021-12-06 21:03:53,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:53,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793412992] [2021-12-06 21:03:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:53,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 21:03:53,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:53,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793412992] [2021-12-06 21:03:53,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793412992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:53,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:53,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:03:53,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133355762] [2021-12-06 21:03:53,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:53,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:53,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:03:53,401 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:53,415 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2021-12-06 21:03:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 21:03:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:53,417 INFO L225 Difference]: With dead ends: 56 [2021-12-06 21:03:53,417 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 21:03:53,417 INFO L932 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 [2021-12-06 21:03:53,418 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:53,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 65 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 21:03:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-12-06 21:03:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2021-12-06 21:03:53,422 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 25 [2021-12-06 21:03:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:53,423 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2021-12-06 21:03:53,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2021-12-06 21:03:53,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 21:03:53,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:53,423 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:53,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:03:53,424 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 835167343, now seen corresponding path program 1 times [2021-12-06 21:03:53,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:53,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359839814] [2021-12-06 21:03:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:53,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 21:03:53,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:53,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359839814] [2021-12-06 21:03:53,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359839814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:53,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:53,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:03:53,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693815837] [2021-12-06 21:03:53,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:53,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:03:53,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:03:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:03:53,484 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:53,497 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2021-12-06 21:03:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:03:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-06 21:03:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:53,498 INFO L225 Difference]: With dead ends: 47 [2021-12-06 21:03:53,498 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 21:03:53,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:03:53,499 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:53,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 65 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 21:03:53,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-06 21:03:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-12-06 21:03:53,503 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 26 [2021-12-06 21:03:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:53,503 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-12-06 21:03:53,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-12-06 21:03:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 21:03:53,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:53,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:53,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:03:53,504 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:53,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1615339204, now seen corresponding path program 1 times [2021-12-06 21:03:53,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:53,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560214254] [2021-12-06 21:03:53,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:53,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:54,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:54,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560214254] [2021-12-06 21:03:54,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560214254] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:54,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797114441] [2021-12-06 21:03:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:54,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:54,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:54,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:54,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a52a546-af09-4eb2-ba05-1694a38d8ff7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:03:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:54,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 134 conjunts are in the unsatisfiable core [2021-12-06 21:03:54,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:54,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 21:03:54,551 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 21:03:54,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 21:03:54,722 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-06 21:03:54,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-06 21:03:54,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:54,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:54,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 21:03:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:54,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-06 21:03:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:54,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-06 21:03:54,933 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 21:03:54,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 63 [2021-12-06 21:03:54,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2021-12-06 21:03:54,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 21:03:55,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,193 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-12-06 21:03:55,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2021-12-06 21:03:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,336 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 21:03:55,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 80 [2021-12-06 21:03:55,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 21:03:55,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-12-06 21:03:55,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,695 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-12-06 21:03:55,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 185 treesize of output 146 [2021-12-06 21:03:55,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2021-12-06 21:03:55,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 53 [2021-12-06 21:03:55,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:03:55,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 20 [2021-12-06 21:03:55,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 21:03:55,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:03:55,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:03:55,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-06 21:03:55,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2021-12-06 21:03:55,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 21:03:55,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 21:03:55,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2021-12-06 21:03:55,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-06 21:03:55,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 21:03:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:56,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:03:56,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_634 (Array Int Int)) (v_ArrVal_642 Int) (v_ArrVal_636 (Array Int Int)) (v_ArrVal_638 (Array Int Int)) (v_ArrVal_637 (Array Int Int)) (v_ArrVal_648 Int) (v_ArrVal_632 (Array Int Int))) (let ((.cse3 (+ |c_ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (let ((.cse1 (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| v_ArrVal_634) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_636))) (store .cse5 |c_ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_insert_~last~0#1.base|) .cse3 |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse0 (select (select (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| v_ArrVal_637) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_632))) (store .cse4 |c_ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_insert_~last~0#1.base|) .cse3 |c_ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (and (= .cse0 0) (= .cse1 0)) (= (select (select (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) v_ArrVal_642)) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_638))) (store .cse2 |c_ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_insert_~last~0#1.base|) .cse3 v_ArrVal_648))) .cse1) .cse0) |c_ULTIMATE.start_main_~data~0#1|))))) is different from false [2021-12-06 21:03:56,331 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_634 (Array Int Int)) (v_ArrVal_642 Int) (v_ArrVal_636 (Array Int Int)) (v_ArrVal_638 (Array Int Int)) (v_ArrVal_637 (Array Int Int)) (v_ArrVal_648 Int) (v_ArrVal_632 (Array Int Int))) (let ((.cse5 (+ |c_ULTIMATE.start_dll_insert_~last~0#1.offset| 4))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base|) .cse5)) (.cse4 (+ 8 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~last~0#1.base|) .cse5)))) (let ((.cse0 (select (select (let ((.cse7 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base| v_ArrVal_634) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_636))) (store .cse7 .cse3 (store (select .cse7 .cse3) .cse4 |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (select (select (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~last~0#1.base| v_ArrVal_637) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_632))) (store .cse6 .cse3 (store (select .cse6 .cse3) .cse4 |c_ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (and (= .cse0 0) (= .cse1 0)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_dll_insert_~last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_insert_~last~0#1.base|) .cse5 v_ArrVal_642)) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_638))) (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 v_ArrVal_648))) .cse0) .cse1))))))) is different from false [2021-12-06 21:03:56,398 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_634 (Array Int Int)) (v_ArrVal_642 Int) (v_ArrVal_636 (Array Int Int)) (v_ArrVal_638 (Array Int Int)) (v_ArrVal_637 (Array Int Int)) (v_ArrVal_648 Int) (v_ArrVal_632 (Array Int Int))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (.cse6 (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 4))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| .cse5) .cse6)) (.cse4 (+ (select (select |c_#memory_$Pointer$.offset| .cse5) .cse6) 8))) (let ((.cse1 (select (select (let ((.cse8 (store (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_634) |c_ULTIMATE.start_node_create_#res#1.base| v_ArrVal_636))) (store .cse8 .cse3 (store (select .cse8 .cse3) .cse4 |c_ULTIMATE.start_node_create_#res#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse0 (select (select (let ((.cse7 (store (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_637) |c_ULTIMATE.start_node_create_#res#1.base| v_ArrVal_632))) (store .cse7 .cse3 (store (select .cse7 .cse3) .cse4 |c_ULTIMATE.start_node_create_#res#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (and (= .cse0 0) (= .cse1 0)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (let ((.cse2 (store (store |c_#memory_int| .cse5 (store (select |c_#memory_int| .cse5) .cse6 v_ArrVal_642)) |c_ULTIMATE.start_node_create_#res#1.base| v_ArrVal_638))) (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 v_ArrVal_648))) .cse1) .cse0))))))) is different from false [2021-12-06 21:03:56,520 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_634 (Array Int Int)) (v_ArrVal_642 Int) (v_ArrVal_630 Int) (v_ArrVal_636 (Array Int Int)) (v_ArrVal_624 (Array Int Int)) (v_ArrVal_638 (Array Int Int)) (v_ArrVal_637 (Array Int Int)) (v_ArrVal_628 (Array Int Int)) (v_ArrVal_626 Int) (v_ArrVal_648 Int) (v_ArrVal_632 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_624)) (.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4) 0) (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 8) v_ArrVal_630) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_ArrVal_626)))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (.cse7 (+ (select (select .cse9 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 4))) (let ((.cse3 (select (select .cse11 .cse6) .cse7)) (.cse4 (+ (select (select .cse9 .cse6) .cse7) 8))) (let ((.cse0 (select (select (let ((.cse10 (store (store .cse11 .cse6 v_ArrVal_634) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_636))) (store .cse10 .cse3 (store (select .cse10 .cse3) .cse4 |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (select (select (let ((.cse8 (store (store .cse9 .cse6 v_ArrVal_637) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_632))) (store .cse8 .cse3 (store (select .cse8 .cse3) .cse4 |c_ULTIMATE.start_node_create_~temp~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (and (= .cse0 0) (= .cse1 0)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (let ((.cse2 (store (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_628))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 v_ArrVal_642))) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_638))) (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 v_ArrVal_648))) .cse0) .cse1)))))))) is different from false [2021-12-06 21:03:59,851 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_node_create_~temp~0#1.base_7| Int) (v_ArrVal_626 Int) (v_ArrVal_648 Int) (v_ArrVal_621 (Array Int Int)) (v_ArrVal_632 (Array Int Int)) (v_ArrVal_623 (Array Int Int)) (v_ArrVal_634 (Array Int Int)) (v_ArrVal_622 (Array Int Int)) (v_ArrVal_642 Int) (v_ArrVal_630 Int) (v_ArrVal_636 (Array Int Int)) (v_ArrVal_624 (Array Int Int)) (v_ArrVal_638 (Array Int Int)) (v_ArrVal_637 (Array Int Int)) (v_ArrVal_628 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_621)) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_622))) (let ((.cse11 (store .cse0 |v_ULTIMATE.start_node_create_~temp~0#1.base_7| v_ArrVal_624)) (.cse13 (store .cse9 |v_ULTIMATE.start_node_create_~temp~0#1.base_7| (store (store (store (select .cse9 |v_ULTIMATE.start_node_create_~temp~0#1.base_7|) 4 0) 8 v_ArrVal_630) 0 v_ArrVal_626)))) (let ((.cse7 (select (select .cse13 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (+ (select (select .cse11 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse4 (select (select .cse13 .cse7) .cse8)) (.cse5 (+ (select (select .cse11 .cse7) .cse8) 8))) (let ((.cse1 (select (select (let ((.cse12 (store (store .cse13 .cse7 v_ArrVal_634) |v_ULTIMATE.start_node_create_~temp~0#1.base_7| v_ArrVal_636))) (store .cse12 .cse4 (store (select .cse12 .cse4) .cse5 |v_ULTIMATE.start_node_create_~temp~0#1.base_7|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (select (select (let ((.cse10 (store (store .cse11 .cse7 v_ArrVal_637) |v_ULTIMATE.start_node_create_~temp~0#1.base_7| v_ArrVal_632))) (store .cse10 .cse4 (store (select .cse10 .cse4) .cse5 0))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (and (= .cse1 0) (= .cse2 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_node_create_~temp~0#1.base_7|))) (<= |c_#StackHeapBarrier| |v_ULTIMATE.start_node_create_~temp~0#1.base_7|) (= (select (select (let ((.cse3 (store (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_623) |v_ULTIMATE.start_node_create_~temp~0#1.base_7| v_ArrVal_628))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 v_ArrVal_642))) |v_ULTIMATE.start_node_create_~temp~0#1.base_7| v_ArrVal_638))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_ArrVal_648))) .cse1) .cse2) |c_ULTIMATE.start_main_~data~0#1|) (not (= (select (select .cse9 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))))))) is different from false [2021-12-06 21:03:59,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:03:59,925 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:03:59,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 3139 treesize of output 1914 [2021-12-06 21:03:59,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:03:59,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:03:59,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:04:00,028 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:04:00,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1193 treesize of output 1150 [2021-12-06 21:09:56,429 WARN L227 SmtUtils]: Spent 5.81m on a formula simplification. DAG size of input: 420 DAG size of output: 248 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 21:09:56,430 INFO L354 Elim1Store]: treesize reduction 1007, result has 43.1 percent of original size [2021-12-06 21:09:56,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 21 new quantified variables, introduced 91 case distinctions, treesize of input 20378370301 treesize of output 19583095665