./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.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_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/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_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/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_e33f1edd-84cd-446c-9616-50187aa8e20b/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 f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:59:20,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:59:20,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:59:20,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:59:20,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:59:20,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:59:20,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:59:20,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:59:20,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:59:20,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:59:20,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:59:20,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:59:20,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:59:20,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:59:20,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:59:20,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:59:20,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:59:20,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:59:20,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:59:20,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:59:20,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:59:20,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:59:20,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:59:20,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:59:20,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:59:20,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:59:20,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:59:20,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:59:20,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:59:20,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:59:20,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:59:20,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:59:20,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:59:20,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:59:20,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:59:20,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:59:20,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:59:20,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:59:20,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:59:20,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:59:20,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:59:20,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:59:20,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:59:20,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:59:20,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:59:20,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:59:20,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:59:20,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:59:20,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:59:20,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:59:20,713 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:59:20,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:59:20,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:59:20,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:59:20,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:59:20,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:59:20,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:59:20,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:59:20,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:59:20,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:59:20,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:59:20,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:59:20,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:59:20,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:59:20,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:59:20,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:59:20,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:59:20,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:59:20,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:59:20,717 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_e33f1edd-84cd-446c-9616-50187aa8e20b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2021-12-06 23:59:20,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:59:20,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:59:20,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:59:20,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:59:20,913 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:59:20,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2021-12-06 23:59:20,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/data/b33c0391c/236737cac4524e74868364e5e235c9d6/FLAGd8aee29cb [2021-12-06 23:59:21,385 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:59:21,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2021-12-06 23:59:21,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/data/b33c0391c/236737cac4524e74868364e5e235c9d6/FLAGd8aee29cb [2021-12-06 23:59:21,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/data/b33c0391c/236737cac4524e74868364e5e235c9d6 [2021-12-06 23:59:21,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:59:21,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:59:21,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:59:21,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:59:21,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:59:21,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ffc768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21, skipping insertion in model container [2021-12-06 23:59:21,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:59:21,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:59:21,646 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_e33f1edd-84cd-446c-9616-50187aa8e20b/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-12-06 23:59:21,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:59:21,672 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:59:21,693 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_e33f1edd-84cd-446c-9616-50187aa8e20b/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-12-06 23:59:21,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:59:21,724 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:59:21,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21 WrapperNode [2021-12-06 23:59:21,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:59:21,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:59:21,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:59:21,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:59:21,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,760 INFO L137 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 200 [2021-12-06 23:59:21,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:59:21,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:59:21,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:59:21,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:59:21,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:59:21,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:59:21,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:59:21,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:59:21,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (1/1) ... [2021-12-06 23:59:21,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:59:21,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:21,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:59:21,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-06 23:59:21,843 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2021-12-06 23:59:21,843 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:59:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2021-12-06 23:59:21,844 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2021-12-06 23:59:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:59:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2021-12-06 23:59:21,844 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2021-12-06 23:59:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:59:21,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:59:21,922 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:59:21,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:59:22,138 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:59:22,144 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:59:22,144 INFO L301 CfgBuilder]: Removed 33 assume(true) statements. [2021-12-06 23:59:22,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:59:22 BoogieIcfgContainer [2021-12-06 23:59:22,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:59:22,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:59:22,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:59:22,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:59:22,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:59:21" (1/3) ... [2021-12-06 23:59:22,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd6ae04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:59:22, skipping insertion in model container [2021-12-06 23:59:22,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:21" (2/3) ... [2021-12-06 23:59:22,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd6ae04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:59:22, skipping insertion in model container [2021-12-06 23:59:22,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:59:22" (3/3) ... [2021-12-06 23:59:22,152 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2021-12-06 23:59:22,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:59:22,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:59:22,191 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:59:22,196 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 23:59:22,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:59:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 75 states have (on average 1.68) internal successors, (126), 83 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 23:59:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:59:22,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:22,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:22,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:59:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1660370747, now seen corresponding path program 1 times [2021-12-06 23:59:22,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:22,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856187112] [2021-12-06 23:59:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:22,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:22,344 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 23:59:22,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:22,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856187112] [2021-12-06 23:59:22,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856187112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:59:22,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:59:22,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:59:22,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747717487] [2021-12-06 23:59:22,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:59:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:59:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:59:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:59:22,375 INFO L87 Difference]: Start difference. First operand has 96 states, 75 states have (on average 1.68) internal successors, (126), 83 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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 23:59:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:22,414 INFO L93 Difference]: Finished difference Result 188 states and 326 transitions. [2021-12-06 23:59:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:59:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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) Word has length 16 [2021-12-06 23:59:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:22,422 INFO L225 Difference]: With dead ends: 188 [2021-12-06 23:59:22,422 INFO L226 Difference]: Without dead ends: 88 [2021-12-06 23:59:22,426 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 23:59:22,429 INFO L933 BasicCegarLoop]: 115 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, 115 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 23:59:22,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-06 23:59:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-12-06 23:59:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 76 states have internal predecessors, (83), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 23:59:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-12-06 23:59:22,466 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 16 [2021-12-06 23:59:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:22,467 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-12-06 23:59:22,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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 23:59:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-12-06 23:59:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:59:22,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:22,469 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:22,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:59:22,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:59:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash -871113262, now seen corresponding path program 1 times [2021-12-06 23:59:22,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:22,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152892881] [2021-12-06 23:59:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:22,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:59:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 23:59:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:59:23,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:23,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152892881] [2021-12-06 23:59:23,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152892881] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:23,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716606476] [2021-12-06 23:59:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:23,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:23,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:23,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:59:23,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:59:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:23,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 23:59:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:23,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-12-06 23:59:23,457 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-06 23:59:23,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-06 23:59:23,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-06 23:59:23,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-06 23:59:23,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:59:23,515 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 23:59:23,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2021-12-06 23:59:23,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-12-06 23:59:23,612 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 15 treesize of output 17 [2021-12-06 23:59:23,700 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2021-12-06 23:59:23,740 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 20 treesize of output 8 [2021-12-06 23:59:23,826 WARN L860 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_245 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_245) |c_chain_node_#in~ppnode#1.base| v_ArrVal_246) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|))) is different from true [2021-12-06 23:59:23,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:23,864 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:59:23,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-12-06 23:59:23,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 23:59:23,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-06 23:59:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-06 23:59:23,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:23,986 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_chain_node_~node~0#1.base_4| Int) (v_ArrVal_254 (Array Int Int)) (v_ArrVal_255 (Array Int Int))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_4| v_ArrVal_254) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_255) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|) 0)) (<= |c_#StackHeapBarrier| |v_chain_node_~node~0#1.base_4|))) is different from false [2021-12-06 23:59:23,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716606476] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:23,988 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:23,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2021-12-06 23:59:23,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140445023] [2021-12-06 23:59:23,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:23,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:59:23,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:23,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:59:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=528, Unknown=3, NotChecked=94, Total=702 [2021-12-06 23:59:23,990 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 26 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 23 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 23:59:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:24,666 INFO L93 Difference]: Finished difference Result 154 states and 192 transitions. [2021-12-06 23:59:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:59:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 23 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 33 [2021-12-06 23:59:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:24,669 INFO L225 Difference]: With dead ends: 154 [2021-12-06 23:59:24,669 INFO L226 Difference]: Without dead ends: 151 [2021-12-06 23:59:24,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=926, Unknown=5, NotChecked=126, Total=1190 [2021-12-06 23:59:24,671 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 180 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:24,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 698 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 973 Invalid, 0 Unknown, 260 Unchecked, 0.5s Time] [2021-12-06 23:59:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-06 23:59:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 111. [2021-12-06 23:59:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 96 states have internal predecessors, (108), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 23:59:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2021-12-06 23:59:24,687 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 33 [2021-12-06 23:59:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:24,687 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2021-12-06 23:59:24,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 23 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 23:59:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2021-12-06 23:59:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 23:59:24,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:24,689 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:24,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:59:24,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:24,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:59:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 371633244, now seen corresponding path program 1 times [2021-12-06 23:59:24,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:24,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381744622] [2021-12-06 23:59:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:24,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:59:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 23:59:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:59:25,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:25,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381744622] [2021-12-06 23:59:25,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381744622] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:25,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805910908] [2021-12-06 23:59:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:25,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:25,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:25,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:59:25,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e33f1edd-84cd-446c-9616-50187aa8e20b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:59:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:25,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 23:59:25,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:25,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:59:25,483 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-06 23:59:25,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-06 23:59:25,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-06 23:59:25,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-06 23:59:25,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:59:25,531 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 23:59:25,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2021-12-06 23:59:25,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-12-06 23:59:25,605 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 23:59:25,606 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-06 23:59:25,671 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 23:59:25,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-12-06 23:59:25,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 23:59:25,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-06 23:59:25,828 WARN L860 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_477 (Array Int Int)) (|chain_node_~node~0#1.offset| Int)) (and (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_477 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_477) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2021-12-06 23:59:25,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:25,932 INFO L354 Elim1Store]: treesize reduction 124, result has 44.9 percent of original size [2021-12-06 23:59:25,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 127 treesize of output 191 [2021-12-06 23:59:25,973 INFO L354 Elim1Store]: treesize reduction 50, result has 43.8 percent of original size [2021-12-06 23:59:25,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 101 [2021-12-06 23:59:26,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:59:26,006 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-12-06 23:59:26,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 92 treesize of output 82 [2021-12-06 23:59:26,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 23:59:27,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 232 treesize of output 221 [2021-12-06 23:59:27,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 44 [2021-12-06 23:59:27,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:27,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 23:59:27,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:27,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-12-06 23:59:27,846 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 15 treesize of output 11 [2021-12-06 23:59:27,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:59:27,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 56 [2021-12-06 23:59:27,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:59:27,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-12-06 23:59:28,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2021-12-06 23:59:28,420 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 34 treesize of output 26 [2021-12-06 23:59:28,424 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 23:59:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:28,716 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:59:28,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 509 treesize of output 427 [2021-12-06 23:59:29,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:59:29,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:59:29,347 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 129 [2021-12-06 23:59:29,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:59:29,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:59:29,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 15 [2021-12-06 23:59:29,537 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-12-06 23:59:29,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 424 treesize of output 293 [2021-12-06 23:59:29,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:59:29,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 293 treesize of output 341 [2021-12-07 00:06:07,536 WARN L227 SmtUtils]: Spent 3.84m on a formula simplification that was a NOOP. DAG size: 10083 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-07 00:06:07,541 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:06:07,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 71 select indices, 71 select index equivalence classes, 0 disjoint index pairs (out of 2485 index pairs), introduced 71 new quantified variables, introduced 2485 case distinctions, treesize of input 3216 treesize of output 22514 [2021-12-07 00:06:16,997 WARN L227 SmtUtils]: Spent 9.44s on a formula simplification that was a NOOP. DAG size: 10560 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)